OPENING REMARKS. Ice-breaking session Scheduling Course planning

Transcription

1 OPENING REMARKS Ice-breaking session Scheduling Course planning OPENING REMARKS

2 BRIEF CV Mohd Nasir TAMIN, CEng Ph.D. Mechanical Engineering and Applied Mechanics, 1996 URI (USA) Professor Department of Applied Mechanics, Faculty of Mechanical Engineering (UTM) Head, Computational Solid Mechanics Laboratory Research and Engineering Consultation: Fatigue damage mechanisms in SiC/Ti MMC Fatigue characterization of TiAl intermetallic alloys Fatigue life prediction of NGV compressor components Reliability stress analysis on solder interconnects in BGA packages Failure analysis of machine component and structures Courses delivered: Mechanics of materials Finite element method Failure of engineering components and structures Fatigue and fracture mechanics Materials engineering Applied numerical methods Research Methodology Contact: / taminmn@fkm.utm.my OPENING REMARKS 2

3 FATIGUE Deterioration of a material by initiation and propagation of cracks when subjected to repeated load. FRACTURE MECHANICS The response of solids to loading in the presence of cracks or crack-like defects. OPENING REMARKS 3

4 Course Content: A - INTRODUCTION Mechanical failure modes; Review of load and stress analysis equilibrium equations, complex stresses, stress transformation, Mohr s circle, stress-strain relations, stress concentration; Fatigue design methods; Design strategies; Design criteria. B MATERIALS ASPECTS OF FATIGUE AND FRACTURE Static fracture process; Fatigue fracture surfaces; Macroscopic features; Fracture mechanisms; Microscopic features. C FATIGUE: STRESS-LIFE APPROACH Fatigue loading; Fatigue testing; S-N curve; Fatigue limit; Mean stress effects; Factors affecting S-N behavior microstructure, size effect, surface finish, frequency. OPENING REMARKS 4

5 D FATIGUE: STRAIN-LIFE APPROACH Stress-strain diagram; Strain-controlled test methods; Cyclic stress-strain behavior; Strain-based approach to life estimation; Strain-life fatigue properties; Mean stress effects; Effects of surface finish. E LINEAR ELASTIC FRACTURE MECHANICS Fundamentals of LEFM loading modes, stress intensity factor, K; Geometry correction factors; Superposition for Mode I; Crack-tip plasticity; Fracture toughness, K IC ; Plane stress versus plane strain fracture; Extension to elastic-plastic fracture.. F FATIGUE CRACK PROPAGATION Fatigue crack growth; Paris Law; da/dn- K; Crack growth test method; Threshold K th ; Mean stress effects; Crack growth life integration. OPENING REMARKS 5

6 List of references used in preparing the lecture slides for the course Shigley, J.E., Mechanical Engineering Design, McGraw Hill, Hibbeler, R.C., Mechanics of Materials, 5 th edition, Prentice Hall / Pearson Education, Stephens, R.I., Fatemi, A., Stephens, R.R. and Fuchs, H.O., Metal Fatigue in Engineering, 2 nd edition, Wiley Interscience, Broek, D, Elementary Engineering Fracture Mechanics, 4 th edition, Columbus, Juvinall, R.C., Fundamentals of Machine Component Design, John Wiley & Sons, 1983 Askeland, D.R., The Science and Engineering of Materials, 3 rd edition, PWS Publishing Co., Callister, W.D.Jr., Materials Science and Engineering An Introduction, 6 th edition, John Wiley & Sons, Marks Standard Handbook for Mechanical Engineers, 8 th edition, McGraw Hill, Mechanical Engineer s Reference Book, A. Parrish, ed., 11 th edition, Butterworths & Co., Author s lecture notes used in various applied mechanics subjects taught at the Faculty of Mechanical Engineering, Universiti Teknologi Malaysia (UTM). Outcome of research conducted by the author and his research team at UTM. OPENING REMARKS 6