ABSTRACT. Keywords: Stress intensity factor, structural integrity, Remaining life assessment, life extension, crack growth. 1.
|
|
- Walter Merritt
- 5 years ago
- Views:
Transcription
1 7 thinternational Conference on Creep, Fatigue and Creep-Fatigue Interaction (CF-7) Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India. January 19-22, 2016 REMAINING LIFE ASSESSMENT OF HYDRO TURBINE SHAFT USING NUMERICAL CRACK PROPAGATION TECHNIQUE B.M. Sachin *, S. Shamasundar, G. Chidanand, S. Pradeep ProSIM R&D Pvt. Ltd., Bangalore, India * Corresponding author info@pro-sim.com ABSTRACT Remaining life extension studies of hydro power plant components, systems, and structures have to deal with the fatigue failure and fracture. This paper presents structural integrity assessment studies of a hydro turbine shaft. Multiple sites of cracks were detected by NDT. Operator had to be given a clear mandate to retire the turbine shaft or repair and reuse. Towards such structural integrity assessment, authors have carried out finite element analysis under operating loads, and fatigue crack propagation analysis to assess the remaining useful life of shaft. A finite element analysis (FEA) model of the shaft was created using commercial software ABAQUS. Crack propagation under operating duty cycles was simulated using a commercial 3D non-planar crack propagation software Zencrack. Fracture mechanics characteristics such stress intensity factor (SIF), as k/n, da/dn are determined. The cycles for fracture has been simulated using CTOD method. In conducting crack propagation analysis, conventional FEM analysis, and X-FEM methods are seen to pose severe challenge for the analyst in terms of excessive computational time and continuous user intervention to re-mesh the crack tip region, to overcome the singularity issues. The crack block approach used in Zencrack was found to elegantly solve the problems arising due to singularity at crack tip. The FEA based fracture model with multiple sites was used to simulate the interaction effects of propagating cracks and its effect in reducing the modulus. The hydro generator turbine shaft was found to be safe till the next maintenance period. Keywords: Stress intensity factor, structural integrity, Remaining life assessment, life extension, crack growth. 1.0 INTRODUCTION Structural integrity assessment of a hydel generator turbine shaft is presented in this paper. Power plant of 120MW has been operating for last 30 years. Shaft was made of UNS S41000 material. Internal defects in the shaft are mainly due to processing (voids, porosity) and material defects (inclusions). These flaws start growing and become noticeable in size with increasing service life. The important question was, how long this shaft could be operated safely. During the maintenance schedule the turbine was detected to have multiple sites of noticeable cracks. Operators concern was about the risk of continuing the shaft in operation. Authors have done the crack growth analysis considering the multiple cracks to assess the remaining life. An FEM analysis based fatigue crack propagation study was undertaken to study the remaining life of the shaft. Crack propagation simulation enables one to predict the period of sub-critical crack growth and hence the useful remaining service life of component. 479
2 Once a fatigue crack propagation is developed, and validated, crack growth studies for a variety of conditions can be conducted to assess the risk and reliability. In the current analysis, authors have studied the effect of operational loads and the cyclic loads due to plant start-up, and shut-down cycles. 2.0 OVERVIEW OF CRACK GROWTH ANALYSIS Crack growth analysis is based on the calculation and use of fracture mechanics parameters. Such parameters encapsulate and describe the local effect of the crack on a component. The satisfactory calculation of fracture mechanics parameters is the most fundamental requirement of crack propagation analysis. Having evaluated fracture parameters for a particular crack in a component under a given load, the next task is to convert that information into crack growth. This requires knowledge of the load history and appropriate material crack growth data. The approach taken for integration of crack growth simulation must be able to accommodate the evolution of an arbitrary crack shape that may be nonplanar. This shape evolution presents topologically difficult problems for the numerical methods that are most often used to calculate fracture parameters. 2.1 Numerical Issues in Evaluating Crack Propagation The numerical issues involved in crack propagation range from the basic solution method (which essentially provides fracture parameter values) to the crack growth integration technique. There are three main approaches available to provide fracture parameters: a) Closed form solutions b) Boundary element methods c) Finite element methods Finite element method is a popular approach for tackling fracture mechanics problems. The main advantage of finite element software codes is the flexibility they provide in terms of non-linearity, ability to handle complex geometry, solution algorithms, and overall analysis capabilities. The meshing and pre-processing issues are more difficult than for the boundary element approach but non-linear analysis is possible without any additional meshing effort. For practical industrial use, engineers need a flexible that is easy to use, and give more valuable information on crack growth and propogation. The main challenge for crack growth analysis is to relate fracture mechanics parameter, topology and crack growth integration. This is effectively done using crack block approach in ZENCRACK software. Using these crack blocks numerical singularities like SIF (K) can be captured correctly and easily. 480
3 Figure 1: Three key areas for crack simulation 2.2 Turbine Generator Shaft Crack Growth Analysis Generator shaft is meshed differently for the stress analysis and for crack growth analysis. For stress analysis it is modeled with tetrahedral elements in ABAQUS, as shown in Figure 2. For crack growth model cracked location are modeled with Crack block elements from Zencrack software. From the NDT the flaw detection sites were obtained. A study on the location and size of the flaws was conducted. For the purpose of this paper two neighboring cracks, are considered to show the interaction effects. Figure 3 shows two cracks of 60 mm and 110 mm size at about 150 mm depth from the surface. Figure 2: 3D FE model of the generator shaft Figure 3: Two crack blocks considered at critical crack location 481
4 7 th International Conference on Creep, Fatigue and Creep-Fatigue Interaction (CF-7) 2.3 Mesh Model for Crack Growth The generator shaft is meshed with tetrahedral elements except in the region of the crack. The cracked location is meshed with crack blocks as shown in Figure 4. Tie constraint are used to define the contact between the crack blocks and the generator shaft. For the analysis of generator shaft crack growth, first a hex mesh is generated at the location of the crack. In the present study two cracks are considered which found to be largest in size and the orientation of the defects. Crack front Figure 4: Arrangement of the crack blocks. 3.0 RESULTS AND DISCUSSION FEM analysis showed that the stresses in the shaft were very low, mainly arising due to inertial effects and centrifugal forces. From the plant observation, the alignment of the shafts and bearings were checked to be in order. Figure 5: Stress values in crack (Peak stress found to be less than 70 MPa) 482
5 From the crack propagation analysis, authors have found the number of cycles required to reach critical length and crack growth at various crack locations have been found. Figure 6 shows the graphs of sum of da v/s number of cycles for fatigue loading. From the crack propagation study, it was found that, the cracks take practically a very long time to grow. However, due to operational safety issues, life was extended by 2 years. Further usage of the plant shaft was subject to inspection and further analysis. cycles Figure 6: Graph of Sum of da v/s Number of cycles Figure 7: Graph of Sum of da v/s SIF 4.0 CONCLUSIONS During the plant maintenance schedule, multiple sites with noticeable crack sizes were observed. The cracks had grown presumably between the previous maintenance check and the current check. Shaft alignments, bearings were reported in tact. From FEM analysis, the stresses in the shafts were seen to be very low, mainly arising due to centrifugal effects. From the above crack propagation analysis, it was seen that the shaft had quite long time, and the cracks did not grow severely under operating and cyclic loads. Considering the risk factors due to operation, life extension was suggested for 2 years, and further extension to be based on the record of plant observations and further analysis. 483
6 REFERENCES 1. Arun Shukla. Practical Fracture Mechanics in Design, Marcel Dekker, NewYork B.J. Carter, P.A. Wawrzynek, and A.R. Ingraffea. Automated 3D Crack Growth Simulation, Cornell Fracture Group, 641 Rhodes Hall, Cornell University, Ithaca, NY, USA ZENCRACK user s manual, Zentech International, U.K, pp.115, 4. R.J.H. Wanhill. Significance of dwell cracking for IN718 turbine discs ASTM Standards Standard Test Method for Measurement of Fatigue Crack Growth Rates 5. "ASME Journal of Engineering Materials and Technology", Vol Prashanth Kumar. Elements of Fracture Mechanics. Wheeler Publishing. New Delhi 7. Anderson. T. L. Fracture Mechanics, CRC Press, K. R. Y. Simha. Fracture Mechanics for Modern Engineering Design. University Press. 9. J. F. Knott. P. A. Withey. Fracture Mechanics worked Examples. The institute of Materials. 484
ABSTRACT. Keywords: Creep, fatigue, remaining life assessment, (RLA), damage assessment, turbine shaft.
7 thinternational Conference on Creep, Fatigue and Creep-Fatigue Interaction (CF-7) Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India. January 19-22, 2016 CREEP FATIGUE INTERACTION
More informationStudy the pattern of J-profile along the crack front through 3D finite element analysis
Page 16 Study the pattern of J-profile along the crack front through 3D finite element analysis Abstract: Badrun Nahar Hamid a*, Michale J Baker b a Principal Scientific Officer, Atomic Energy Research
More informationFinite Element based Fatigue Crack Growth Simulations in Featured Plate Specimens
Finite Element based Fatigue Crack Growth Simulations in Featured Plate Specimens A.M. Gilmartin, M.B. Henderson*, T.J.W. Ward, B. Vermeulen QinetiQ, Cody Technology Park, Farnborough, Hampshire GU14 0LX,
More informationCOMPARISON BETWEEN DUCTILE TEARING ANALYSIS AND LINEAR ELASTIC FRACTURE MECHANICS ANALYSIS
COMPARISON BETWEEN DUCTILE TEARING ANALYSIS AND LINEAR ELASTIC FRACTURE MECHANICS ANALYSIS Mr. Quinton Rowson Consultant Structural Integrity, Quest Integrity NZL Ltd., New Zealand Mr. Michael Rock Engineering
More informationProceedings of the ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition GT2018 June 11-15, 2018, Oslo, Norway
Proceedings of the ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition GT2018 June 11-15, 2018, Oslo, Norway GT2018-76968 LCF INITIATED - HCF PROPAGATED CRACK LIFE ESTIMATION OF GAS
More informationComputational Analysis of Stress Intensity Factor for a Quarter Circular Edge Crack under Mode-I loading
Research Journal of Engineering Sciences ISSN 2278 9472 Computational Analysis of Stress Intensity Factor for a Quarter Circular Edge Crack under Mode-I loading Abstract Naresh S, Bharath Naik L., Madhu
More informationEngineering Failure Analysis
Engineering Failure Analysis Dr Matt Rudas matt.rudas@mechsafeengineering.com.au +61 (0) 402 978 545 Mechsafe Engineering - Overview Formed in 2016 in Perth, Western Australia Specialising in: Advanced
More informationFinite Element Modeling of Crack initiation and Crack Growth
Finite Element Modeling of Crack initiation and Crack Growth S.Shamasundar, Biradar Laxman S., Chidanada G, Sachin B. M. ProSIM R & D Center 21/B, 9th Main, ShankaraNagara, Mahalakshmi Puram, Bangalore
More informationWorld Journal of Engineering Research and Technology WJERT
wjert, 2018, Vol. 4, Issue 4, 400-408. Original Article ISSN 2454-695X Matur et al. WJERT www.wjert.org SJIF Impact Factor: 5.218 STUDY OF HIGH PRESSURE TURBOJET TURBINE CASE USING FINITE ELEMENT METHOD
More informationModeling And Fatigue Analysis of A Cast Iron Crankshaft
Modeling And Fatigue Analysis of A Cast Iron Crankshaft Walid Roundi 1 1PhD Student, Department of Mechanical Engineering, Moroccan Laboratory of Innovation and Industrial Performance (LaMIPI), Higher
More informationANALYSIS OF STRESS INTENSITY FACTOR OF AL7075 T651 PLATE WITH CRACKED HOLE -A CONSTANT CRACK LENGTH METHOD
ANALYSIS OF STRESS INTENSITY FACTOR OF AL775 T651 PLATE WITH CRACKED HOLE -A CONSTANT CRACK LENGTH METHOD A. Sivasubramanian and G. Arunkumar Department of Mechanical Engineering, Saveetha School of Engineering,
More informationFatigue Crack Initiation and Propagation in Thick Multilayer Metallic Laminates
Key Engineering Materials Online: 2009-10-08 ISSN: 1662-9795, Vols. 417-418, pp 929-932 doi:10.4028/www.scientific.net/kem.417-418.929 2010 Trans Tech Publications, Switzerland Fatigue Crack Initiation
More informationExperimental and Finite Element Analysis of Fracture Toughness on Al/SiCp MMCs in Different Conditions
Volume-5, Issue-5, October-2015 International Journal of Engineering and Management Research Page Number: 320-324 Experimental and Finite Element Analysis of Fracture Toughness on Al/SiCp MMCs in Different
More informationLife Prediction under Creep-Fatigue Interaction with ABAQUS/CAE and fe-safe/turbolife tool
Life Prediction under Creep-Fatigue Interaction with ABAQUS/CAE and fe-safe/turbolife tool Shoeb Mujawar 1, Rajesh Nagose 2, A. K. Kale 3 P.G. Student, Department of Mechanical Engineering (Design), Walchand
More informationFINITE ELEMENT METHOD ANALYSIS OF STRESS INTENSITY FACTOR IN I CHANNEL SECTION
JPE (2016) Vol.19 (1) Pawar, P., Ballav, R., Kumar, A. Preliminary Note FINITE ELEMENT METHOD ANALYSIS OF STRESS INTENSITY FACTOR IN I CHANNEL SECTION Received: 03 March 2016 / Accepted: 18 April 2016
More informationFATIGUE LIFE ESTIMATION OF A BUTT WELDED JOINT BY S-N APPROACH
FATIGUE LIFE ESTIMATION OF A BUTT WELDED JOINT BY S-N APPROACH VINOD M. BANSODE & N.D.MISAL Dept. of Mechanical Engineering, College of Engineering, Pandharpur,India E-mail : vinodbansode123@gmail.com,
More informationStress intensity factors for cracked plates under out-of-plane bending
Stress intensity factors for cracked plates under out-of-plane bending M R Roy 1, J D G Sumpter 1, C M Timbrell and M Wiehahn 1 QinetiQ, Rosyth Business Park, Dunfermline, KY11 XR, UK Zentech Int. Ltd.,
More informationStress and Fatigue analysis of Weldment of Rectangular Column Structure
Stress and Fatigue analysis of Weldment of Rectangular Column Structure Mahesh Gowda Patil 1, Dr. B Ravindra 2, H S Manjunath 3 1M.Tech Scholar, Mechanical Engineering, Dr. Ambedkar Institute of Technology,
More informationFracture mechanics-based life prediction of a riveted lap joint
Fracture mechanics-based life prediction of a riveted lap joint A. R. Shahani * and H. Moayeri Kashani Fracture Mechanics Research Laboratory, Department of Applied Mechanics, Faculty of Mechanical Engineering,
More informationModeling Welded. ANSYS e-learning. June CAE Associates
Modeling Welded Connections ANSYS e-learning Peter Barrett June 2013 2013 CAE Associates Outline The importance of weld stress prediction. Weld geometry and terminology. Failure due to fatigue. Methods
More informationSteam Turbine Critical Crack Evaluation and Ranking Cracks to Prioritize Inspection
Steam Turbine Critical Crack Evaluation and Ranking Cracks to Prioritize Inspection G. Thorwald, V. Garcia, R. Bentley, and O. Kwon Quest Integrity Abstract: The objective of this paper is to evaluate
More informationFEM STRESS CONCENTRATION FACTORS FOR FILLET WELDED CHS-PLATE T-JOINT
Engineering Review Vol. 32, Issue 3, 147-155, 2012. 147 FEM STRESS CONCENTRATION FACTORS FOR FILLET WELDED CHS-PLATE T-JOINT S. * G. Turkalj Department of Engineering Mechanics, Faculty of Engineering,
More informationAn Adaptive Finite Element Framework for Fatigue Crack Propagation under Constant Amplitude Loading
International Journal of Applied Science and Engineering 2015. 13, 3: 261-270 An Adaptive Finite Element Framework for Fatigue Crack Propagation under Constant Amplitude Loading Abdulnaser M. Alshoaibi
More informationModeling Fracture and Failure with Abaqus R2016
Modeling Fracture and Failure with Abaqus R2016 About this Course Course objectives Upon completion of this course you will be able to: Use proper modeling techniques for capturing crack-tip singularities
More informationFatigue of Welded Connections. Rodrigo Gutierrez
Fatigue of Welded Connections Rodrigo Gutierrez Fatigue Fatigue is a process of accumulative damage produced dby the fluctuation of stress and strains even when both stress and strains are below the static
More informationFatigue Crack Growth Analysis of Structural Components - the UniGrow Two-Parameter Driving Force Model
Fatigue Crack Growth Analysis of Structural Components - the UniGrow Two-Parameter Driving Force Model S. Mikheevskiy 1, G. Glinka 1 and D. Algera 2 1 University of Waterloo, Department of Mechanical Engineering,
More informationTransactions on Modelling and Simulation vol 3, 1993 WIT Press, ISSN X
Crack growth analysis using BEASY S.M. Niku, R.A. Adey Computational Mechanics BEASY, W ess ex Institute of Technology, Ashurst Lodge, Ashurst, Southampton, 2,4,4, ABSTRACT Catastrophic failure of engineering
More informationCRITICAL ISSUES IN STRENGTH EVALUATION OF TURBO MACHINERY BLADE DISK ASSEMBLY AT CONSTANT RPM
20 International Journal on Design and Manufacturing Technologies, Vol.4, No.2, July 2010 CRITICAL ISSUES IN STRENGTH EVALUATION OF TURBO MACHINERY BLADE DISK ASSEMBLY AT CONSTANT RPM Abstract Kumar K
More informationInfluence of Crack Dimensions and Heat Treatment on Fracture Behaviour of AA1050 Alloy Pipes Subjected to Bursting Pressures
Influence of Crack Dimensions and Heat Treatment on Fracture Behaviour of AA1050 Alloy Pipes Subjected to Bursting Pressures Chennakesava R Alavala Department of Mechanical Engineering, JNT University,
More informationFRACTURE ANALYSIS FOR STEEL AND EPOXY MATERIAL PLATE WITH EDGE CRACK
FRACTURE ANALYSIS FOR STEEL AND EPOXY MATERIAL PLATE WITH EDGE CRACK Kisan Patil 1, Prof.C.S.Wadageri 2 1 M.Tech.,Mechanical Engg. Dept., MMEC, Belagavi 2 Associate Prof. Mechanical Engg. Dept. MMEC, Belagavi
More informationBird impact analysis of a composite wind turbine blade
Bird impact analysis of a composite wind turbine blade Tejas K.S 1, Dr. Prashanth A.S 2 1 Department Of Mechanical Engineering Dr. Ambedkar Institute Of Technology Bengaluru, India 2 Assistant Professor
More informationPREDICTION OF 3-D CRACK GROWTH IN THIN RIM-GEARS
INTERNATIONAL DESIGN CONFERENCE - DESIGN 2002 Dubrovnik, May 14-17, 2002. PREDICTION OF 3-D CRACK GROWTH IN THIN RIM-GEARS J. Kramberger, I. Potrc and J. Flašker Keywords: thin-rim gears, tooth root stress,
More informationDamage Evaluation Using Advanced Functionalities in Abaqus
Damage Evaluation Using Advanced Functionalities in Abaqus Axel Schulz 1, Detlef Rieck 2, Jutta Brüning 1 1 TÜV NORD SysTec GmbH & Co. KG, Hamburg 2 IGN Ingenieurgesellschaft Nord mbh & Co. KG, Greifswald
More information21 Fracture and Fatigue Revision
21 Fracture and Fatigue Revision EG2101 / EG2401 March 2015 Dr Rob Thornton Lecturer in Mechanics of Materials www.le.ac.uk Fracture concepts Fracture: Initiation and propagation of cracks within a material
More informationCore competencies. Professional Experiences in reputed organizations
Pradeep Kumar, PhD. 204, HBNI, Mumbai-94, Maharashtra India Mob: +91-9869922781, 7498888705 Email: pradeep.dgfs@gmail.com Summary I have completed my PhD. (Mechanical Engineering) work from State-Of-The-
More informationFatigue life prediction for a cracked notched element under symmetric load condition
Fatigue life prediction for a cracked notched element under symmetric load condition M.E. Biancolini, C. Brutti, G. Cappellini & M. D'Ulisse Dep. of Mechanical Engineering Rome University "Tor Vergata",
More informationJournal of American Science 2014;10(1)
Analysis and Determination of the Stress Intensity Factor of Load-Carrying Cruciform Fillet Welded Joints Nabil Mahmoud, Ahmed Badr, Fikry Salim and Amro Elhossainy Structure Engineering Department, Faculty
More informationAbstract. 1. Introduction. 2. Literature Review
Experimental And Numerical Analysis Of Critical Stress Intensity Factor Of Pressure Vessel Material Used In Disc Shaped Compact Specimen B. C. Patel 1, Bharat Gupta 2 and Abhishek Choubey 2 1 M.Tech Student,
More informationStructural Design and Analysis of Gas Turbine Blade using CAE tools
Structural Design and Analysis of Gas Turbine Blade using CAE tools Nithin Kumar K C 1, Tushar Tandon 2, Praveen Silori 3, Amir Shaikh 4 Assistant Professor 1, UG students 2, 3, Professor 4 Department
More informationMultiscale Modeling of Metallic Materials Containing Embedded Particles
Multiscale Modeling of Metallic Materials Containing Embedded Particles D. R. Phillips * NASA Langley Research Center, Hampton, VA, 23681-2199 E. Iesulauro Cornell University, Ithaca, NY, 14853 and E.
More informationSTRESS -STRAIN ANALYSIS AND EXPERIMENTAL VERIFICATION OF THREE-ROLL PYRAMIDAL SHAPE CONFIGURATION ROLL BENDING MACHINE
STRESS -STRAIN ANALYSIS AND EXPERIMENTAL VERIFICATION OF THREE-ROLL PYRAMIDAL SHAPE CONFIGURATION ROLL BENDING MACHINE Mr. Pramod R. Walunj 1, B. Prof. Dr. A. D. Desai 2, C. Prof. A. B. Verma 3 1,2,3 Department
More informationFinite Element Simulation on Crack Analysis of a Thick-Tube
Finite Element Simulation on Crack Analysis of a Thick-Tube A.M.Ahmad Zaidi 1*, M.M.Md Asif 2, I.Abdul Rahman 3, S.Rasool Mohideen 1, A.F.Ahmad Zaidi 4, N.H.Ahmad Zaidi 5 and M.S.Yusof 1 1 AdVeS, Faculty
More informationAvailable online at Procedia Engineering 55 (2013 )
Available online at www.sciencedirect.com Procedia Engineering 55 (2013 ) 421 427 6 th International Conference on Creep, Fatigue and Creep-Fatigue Interaction [CF-6] Real-Time Monitoring of High Temperature
More informationI. Salam, M. Abid, M.A. Malik
INTERNATIONAL JOURNAL OF SYSTEMS APPLICATIONS, ENGINEERING & DEVELOPMENT Volume 3, Issue 1, 007 Crack growth prediction in a thick cylinder under fatigue loading an Abstract This paper presents numerical
More informationFE ANALYSIS OF RUNNER BLADE FOR WELLS TURBINE
Int. J. Mech. Eng. & Rob. Res. 2014 Kevin A Patel and Devendra A Patel, 2014 Research Paper ISSN 2278 0149 www.ijmerr.com Vol. 3, No. 3, July 2014 2014 IJMERR. All Rights Reserved FE ANALYSIS OF RUNNER
More informationFatigue analysis of crack growth rate and path in aluminium alloy 2024-t3 under mix mode loading
2014 IJEDR Volume 2, Issue 2 ISSN: 2321-9939 Fatigue analysis of crack growth rate and path in aluminium alloy 2024-t3 under mix mode loading 1 Rohinkumar Patel, 2 Mr. Chetan Jadav 1 M.E. Student, 2 Assistant
More informationB. INTRODUCTION TO ASSESSMENT PROCEDURES FOR CRACKED COMPONENTS AT HIGH TEMPERATURES
B. INTRODUCTION TO ASSESSMENT PROCEDURES FOR CRACKED COMPONENTS AT HIGH TEMPERATURES 374 INTRODUCTION The early approaches to high temperature life assessment show methodologies that were based on defect-free
More informationTHE CHANGE OF THE LOCAL CRACK DRIVING FORCE IN AN UNDER-MATCH WELDED JOINT
THE CHANGE OF THE LOCAL CRACK DRIVING FORCE IN AN UNDER-MATCH WELDED JOINT Jožef Predan 1, Nenad Gubeljak 1, Otmar Kolednik 2, F.D. Fischer 3 1 University of Maribor, Faculty of Mechanical Engineering
More informationLOW CYCLE FATIGUE LIFE ESTIMATION OF A TURBINE BLISK
International Journal of Advances in Scientific Research and Engineering (ijasre) ISSN: 2454-8006 [Vol. 03, Issue 5, June -2017] LOW CYCLE FATIGUE LIFE ESTIMATION OF A TURBINE BLISK ABSTRACT: Rashmi Ugargol
More informationInternational Journal of Railway Research, Vol.1, No1, pp International Journal of. Railway Research
International Journal of Railway Research, Vol.1, No1, pp 53-60 International Journal of Railway Research Life Estimation in the Railway Wheels Under the Influence of Residual Stress Field S.M. Salehi
More informationVERIFICATION ANALYSES FOR NEWLY DEVELOPED AUTOMATIC 3D FINITE ELEMENT CRACK PROPAGATION SYSTEM
Proceedings of the ASME 214 Pressure Vessels & Piping Conference PVP214 July 2-24, 214, Anaheim, California, USA PVP214-2862 VERIFICATION ANALYSES FOR NEWLY DEVELOPED AUTOMATIC 3D FINITE ELEMENT CRACK
More informationFailure Analysis of Grey Cast Iron Camshaft By Mode of Fracture
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 9, Issue 4 (December 2013), PP. 36-42 Failure Analysis of Grey Cast Iron Camshaft
More informationEngineering Solid Mechanics
}} Engineering Solid Mechanics 1 (2013) 27-36 Contents lists available at GrowingScience Engineering Solid Mechanics homepage: www.growingscience.com/esm Determination of permissible defect size for solid
More informationEngineering Failure Analysis
Engineering Failure Analysis 16 (2009) 329 339 Contents lists available at ScienceDirect Engineering Failure Analysis journal homepage: www.elsevier.com/locate/engfailanal Failure investigation on deformed
More informationFracture. Brittle vs. Ductile Fracture Ductile materials more plastic deformation and energy absorption (toughness) before fracture.
1- Fracture Fracture: Separation of a body into pieces due to stress, at temperatures below the melting point. Steps in fracture: 1-Crack formation 2-Crack propagation There are two modes of fracture depending
More informationFatigue de-bond growth in adhesively bonded single lap joints
Sādhanā Vol. 37, Part 1, February 2012, pp. 79 88. c Indian Academy of Sciences Fatigue de-bond growth in adhesively bonded single lap joints P K SAHOO 1,, B DATTAGURU 2, C M MANJUNATHA 1 and CRLMURTHY
More informationLIFE ESTIMATION OF TURBINE BLISK FOR A GAS TURBINE ENGINE
International Journal of Mechanical Engineering and Technology (IJMET) Volume 8, Issue 8, August 2017, pp. 393 399, Article ID: IJMET_08_08_043 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=8&itype=8
More informationCoupled Thermal Structural Finite Element Analysis for Exhaust Manifold of an Off-road Vehicle Diesel Engine
Coupled Thermal Structural Finite Element Analysis for Exhaust Manifold of an Off-road Vehicle Diesel Engine Sweta Jain, AlkaBani Agrawal Abstract This paper present the Sequential Coupled Thermal - Structural
More informationFinite Element Analysis and Design Optimization of Platen for Injection Molding Machine
IJIRST International Journal for Innovative Research in Science & Technology Volume 1 Issue 12 May 2015 ISSN (online): 2349-6010 Finite Element Analysis and Design Optimization of Platen for Injection
More informationFATIGUE LIFE ASSESSMENT FOR COMPOSITE MATERIALS
18 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS FATIGUE LIFE ASSESSMENT FOR COMPOSITE MATERIALS Y. Nikishkov*, A. Makeev School of Aerospace Engineering, Georgia Institute of Technology, Atlanta,
More informationIII Fatigue Models. 1. Will a crack nucleate? 2. Will it grow? 3. How fast will it grow?
III Fatigue Models 1. Will a crack nucleate? 2. Will it grow? 3. How fast will it grow? Outline Sources of knowledge Modeling Crack nucleation Non propagating cracks Crack growth AM 11/03 2 Source of knowledge
More informationInvestigation of Fatigue Crack Growth under Pure Mode-I and Mixed Mode
Investigation of Fatigue Crack Growth under Pure Mode-I and Mixed Mode Mr. Naresh M. Kalsaria Student, ME-CAD/CAM, Department of mechanical engineering, Shree S ad Vidya Mandal Institute of Technology,
More informationModeling Component Assembly of a Bearing Using Abaqus
Modeling Component Assembly of a Bearing Using Abaqus Bisen Lin, Ph.D., P.E. and Michael W. Guillot, Ph.D., P.E. Stress Engineering Services, Inc. Abstract: Assembly process of a bearing considered in
More informationDETERMINATION OF FAILURE STRENGTH OF CURVED PLATE WELD JOINT USING FINITE ELEMENT ANALYSIS
Int. J. Mech. Eng. & Rob. Res. 2012 Chetan S Baviskar et al., 2012 Research Paper ISSN 2278 0149 www.ijmerr.com Vol. 1, No. 3, October 2012 2012 IJMERR. All Rights Reserved DETERMINATION OF FAILURE STRENGTH
More informationA Systematic Study to Determine the Remaining Life of a 60 year old Westinghouse-design Steam Chest
A Systematic Study to Determine the Remaining Life of a 60 year old Westinghouse-design Steam Chest Sazzadur Rahman, Ph.D. Waheed Abbasi, Ph.D. Thomas W. Joyce Siemens Energy, Inc., 4400 Alafaya Trail,
More informationAvailable online at S. Ramachandra
Available online at www.sciencedirect.com Procedia Engineering 55 ( 2013 ) 487 492 6 th International Conference on Creep, Fatigue and Creep-Fatigue Interaction [CF-6] Fatigue Failure of a Distortion Screen
More informationA REVIEW ON DESIGN AND ANALYSIS OF PRESSURE VESSEL
A REVIEW ON DESIGN AND ANALYSIS OF PRESSURE VESSEL 1 Umbarkar Bhagyashri B. 2. Prof. Hredeya Mishra 1 Student, Dept. of Mechanical Engg.,Jaihind college of Engg. & Technology, Maharashtra, India. Um.bhagyashri@gmail.com
More informationContact Pressure Analysis of Steam Turbine Casing
Contact Pressure Analysis of Steam Turbine Casing Dhanush Naik J B 1, Dr. Kiran Kumar P 2 1Student, Dept. of Mechanical Engineering, SJBIT, Karnataka, India 2Professor, Dept. of Mechanical Engineering,
More informationFatigue and Accelerated Testing of Structural Components. Steffen Haslev Sørensen
Fatigue and Accelerated Testing of Structural Components Steffen Haslev Sørensen May 20, 2014 Topics Introduction Testing as part of other verification activities Fatigue Damage of structural component
More informationStudy of Failure Analysis of Gas Turbine Blade
IOSR Journal of Engineering (IOSRJEN) ISSN: 2250-3021 ISBN: 2878-8719 PP 37-43 National Symposium on engineering and Research Study of Failure Analysis of Gas Turbine Blade Patil A.A.*, Shirsat U.M. Department
More informationDepartment of Civil Engineering, UIT, RGPV, Bhopal, India
International Journal of Scientific & Engineering Research, Volume 7, Issue 5, May-2016 1142 Comparative study of flexural strength of RC beams strengthened with steel and FRP bars Keertika Sharma 1, S.
More informationIntegrity Assessment of Headcovers and Headcover Fasteners
Integrity Assessment of Headcovers and Headcover Fasteners Annette Karstensen, Quinton Rowson, Nathan Stanbridge, Kevin Stevens Quest Integrity Group (Quest Integrity) Robert Dillon Hydro Tasmania Abstract
More informationDuctile Tearing Instability Assessment of a Cracked Reactor Pressure Vessel Nozzle for Larger Critical Crack Size Compared to the FAD Method
Ductile Tearing Instability Assessment of a Cracked Reactor Pressure Vessel Nozzle for Larger Critical Crack Size Compared to the FAD Method G. Thorwald and J. Wright Quest Integrity Group, 1965 57 th
More informationANALYSIS OF FATIGUE CRACK PROPAGATION IN GUSSET PLATES
Int. J. Struct. & Civil Engg. Res. 2012 Bhairav K Thakkar, 2012 Research Paper ISSN 2319 6009 www.ijscer.com Vol. 1, No. 1, November 2012 2012 IJSCER. All Rights Reserved ANALYSIS OF FATIGUE CRACK PROPAGATION
More informationUsing ncode DesignLife for Fatigue of Welds
Using ncode DesignLife for Fatigue of Welds Jeff Mentley HBM Prenscia October 5-6, 2016 www.ncode.com Agenda 3 1. Overview of the Fatigue of Welds 2. Approaches for the Analysis of Fatigue of Seamwelds
More informationSAFETY ASSESMENT OF PRESSURE VESSELS
SAFETY ASSESMENT OF PRESSURE VESSELS Kateřina MACUROVÁ a, Richard TICHÝ b a VŠB TU, CPIT - Structural Integrity and Materials Design, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, The Czech Republic, katerina.macurova@simd.cz
More informationREDESIGN & FINITE ELEMENT ANALYSIS OF INJECTION MOLDING MACHINE STATIONARY PLATEN
REDESIGN & FINITE ELEMENT ANALYSIS OF INJECTION MOLDING MACHINE STATIONARY PLATEN Vicky K Thakor Assistant Professor Department of Mechanical Engineering Silver Oak College of Engineering and Technology,
More informationFatigue Crack Paths in Shafts Subjected to Bending and Torsion
Fatigue Crack Paths in Shafts Subjected to Bending and Torsion T. Lassen 1 and A. Spagnoli 2 1 University of Stavanger, Norway tom.lassen@uis.no 2 University of Parma, Italy spagnoli@unipr.it ABSTRACT.
More informationFEA & Experimental Approach for Weld Fatigue Stress Evaluation of Pressure Vessel Nozzle Joint
FEA & Experimental Approach for Weld Fatigue Stress Evaluation of Pressure Vessel Nozzle Joint Amol A. Kamble 1, Prof. Dr. D. S. More 2 1Dr. D. Y. Patil School of Engineering, Lohegaon, Pune. India Savitribai
More informationAvailable online at ScienceDirect. Procedia Engineering 86 (2014 ) 58 65
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 86 (2014 ) 58 65 1st International Conference on Structural Integrity, ICONS-2014 Influence of Nitrogen Content on the Evolution
More informationFATIGUE ANALYSIS OF A NOTCHED CANTILEVER BEAM USING ANSYS WORKBENCH. N. Sinan Köksal, Arif Kayapunar and Mehmet Çevik
Proceedings of the Fourth International Conference on Mathematical and Computational Applications June 11-13, 2013. Manisa, Turkey, pp.111-118 FATIGUE ANALYSIS OF A NOTCHED CANTILEVER BEAM USING ANSYS
More informationA Study on Co-cured T-joint with Flange/Skin Debond
A Study on Co-cured T-joint with Flange/Skin Debond Dinesh Kumar 1, S.R.Viswamurthy 2, Kundan Kumar Verma 2, S.P.Madhusudan 2 and H.S.N.Murthy 1 1 Department of Aerospace Engineering, Indian Institute
More informationInfluence of key test parameters on SPT results
Indian Journal of Engineering & Materials Sciences Vol. 16, December 2009, pp. 385-389 Influence of key test parameters on SPT results K K Pathak a *, K K Dwivedi b, Manali Shukla a & E Ramadasan c a Advanced
More informationStudy On Fatigue Crack Growth Behavior Of Aluminum Alloy In The Presence Of Notch: An FEA Approach
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-1684,p-ISSN: 2320-334X, Volume 12, Issue 5 Ver. II (Sep. - Oct. 2015), PP 68-74 www.iosrjournals.org Study On Fatigue Crack Growth
More informationA practical appraisal method for through-wall cracks in tubular structures
High Performance Structures and Materials IV 315 A practical appraisal method for through-wall cracks in tubular structures S. Limkatanyu 1 & K. Kuntiyawichai 1 Department of Civil Engineering, Prince
More informationVibration analysis of cantilever beam with multiple cracks using natural frequency as basic criterion
Vibration analysis of cantilever beam with multiple cracks using natural frequency as basic criterion M.P.Kolhe 1, Prof.V.D.Wakchaure 2, Prof.A.V.Deokar 3 1 PG Student, Department of Mechanical Engineering,
More informationStudy on Damage Tolerance Behavior of Integrally Stiffened Panel and Conventional Stiffened Panel
Study on Damage Tolerance Behavior of Integrally Stiffened and Conventional Stiffened M. Adeel Abstract The damage tolerance behavior of integrally and conventional stiffened panel is investigated based
More informationSome thoughts on the nonlinearity of cracks in structural materials
The Modelling and Simulation Centre The University of Manchester Some thoughts on the nonlinearity of cracks in structural materials John R Yates Where, and what is, the crack tip? 2.0 mm 7.0 mm 2.0 mm
More informationStudy on Dynamic Behaviour of Crack Inclined Edge Cracked Beam with Variable Crack Angles Using Free Vibration
International Journal of Allied Practice, Research and Review Website: www.ijaprr.com (ISSN 2350-1294) Study on Dynamic Behaviour of Crack Inclined Edge Cracked Beam with Variable Crack Angles Using Free
More informationDye Penetrant Inspection Technique of Turbine Rotating Component
Dye Penetrant Inspection Technique of Turbine Rotating Component Alexander Nana Kwesi Agyenim-Boateng 1, Edward Kumi Diawuo 2, Psalmiel Nana Nti Agyei 3 1 Research Scientist, National Nuclear Research
More informationLife Assessment of a Jet Engine Component
Life Assessment of a Jet Engine Component E. Acar 1, M. A. Akgün 1 Summary Thermo-mechanical fatigue life of pins connecting the first stage low pressure turbine (LPT) nozzle to the LPT nozzle support
More informationFatigue Life Estimation of Forged Steel and Ductile Iron Crankshaft of Single Cylinder Engine Using Fatigue assessment Techniques
ISSN (O): 2349-7084 International Journal of Computer Engineering In Research Trends Available online at: www.ijcert.org Fatigue Life Estimation of Forged Steel and Ductile Iron Crankshaft of Single Cylinder
More informationMetallurgical Defect: Manufacturing of a Reference Specimen for NDE Studies
13th International Symposium on Nondestructive Characterization of Materials (NDCM-XIII), 20-24 May 2013, Le Mans, France www.ndt.net/?id=15501 More Info at Open Access Database www.ndt.net/?id=15501 Metallurgical
More informationFracture Mechanics experimental tests (ASTM standards and data) 2/2
Task 6 - Safety Review and Licensing On the Job Training on Stress Analysis Fracture Mechanics experimental tests (ASTM standards and data) 2/2 Davide Mazzini Ciro Santus Pisa (Italy) June 15 July 14,
More informationDesign and Analysis of a Connecting Rod
Design and Analysis of a Connecting Rod Sebastian Antony, Arjun A., Shinos T. K B.Tech. Mechanical Dept. Muthoot Institute of Technology and Science Ernakulam, India Abstract The main function of a connecting
More informationFAILURE ANALYSIS OF A STORAGE PUMP SHAFT
FAILURE ANALYSIS OF A STORAGE PUMP SHAFT Niculai PASCA, Liviu MARSAVINA, Sebastian MUNTEAN, Radu NEGRU Affiliation: 1) Politehnica University Timisoara, 2) Romanian Academy, Timisoara Branch Email address:
More informationFINITE ELEMENT METHOD BROACH TOOL DRILLING ANALYSIS USING EXPLICIT DYNAMICS ANSYS
International Journal of Modern Manufacturing Technologies ISSN 2067 3604, Vol. VIII, 2 / 2016 FINITE ELEMENT METHOD BROACH TOOL DRILLING ANALYSIS USING EXPLICIT DYNAMICS ANSYS Pravin Pawar 1, Raj Ballav
More informationF-35 Full Scale Durability Modeling and Test
http://www.fatigue2014.com/presentations/wednesday-5march-2014/35502.pdf 11th International Fatigue Congress, Melbourne Australia F-35 Full Scale Durability Modeling and Test 05 March, 2014 Dale L. Ball
More informationFailure Assessment Diagram Constraint Used for Integrity Analysis of Cylindrical Shell with Crack
Failure Assessment Diagram Constraint Used for Integrity Analysis of Cylindrical Shell with Crack Musthafa Akbar, a,* and Rachman Setiawan, b a) Mechanical Engineering, Universitas Riau, Indonesia b) Mechanical
More informationFatigue Analysis Of Butt Welded Joint Using LEFM Experimental Investigation
Fatigue Analysis Of Butt Welded Joint Using LEFM Experimental Investigation Prof. M. T. Telsang (Department of Mechanical Engg, Rajarambapu Institute of Technology, Sakharale/ Shivaji University, India-415414)
More information