E.G.S. PILLAY ENGINEERING COLLEGE (An Autonomous Institution, Affiliated to Anna University, Chennai) Nagore Post, Nagapattinam , Tamilnadu.

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1 Academic Year : Year / Semester : 17MF103 - MATERIALS TESTING AND MECHANICAL CHARACTERIZATION Programme: M.E Manufacturing Engineering Question Bank I / I Course V.Sivaramakrishnan Coordinator: Course Objectives 1. To impart knowledge in microstructure evaluation, crystal structure analysis and electron microscopy. 2. To impart knowledge in Chemical and Thermal Analysis. 3. To impart knowledge in static and dynamic mechanical testing methods. Course Outcomes: On the successful completion of the course, students will be able to CO1: Recognize the various microstructure evaluation and crystal structure analysis CO2: Recognize the various SEM, TEM and AFM Techniques. CO3: apply Chemical and Thermal Analysis CO4: apply the various static tests like tensile, Hardness, impact and fracture toughness. CO5: apply the various dynamic tests like fatigue and creep. S.N o Questions Mar k CO s BT L UNIT I MICRO AND CRYSTAL STRUCTURE ANALYSIS 1 Define Polishing. Definition 2 1 K1 2 Define Etching. 1 K1 Definition 3 State Bragg s law. 1 K1 law 2 4 State the Principles of Optical Microscopy. 1 K1 Principle 2 5 What do you understand by ASTM grain size number? 1 K1 grain size number 2 6 State the importance of Debye Scherer camera. 1 K1 Importance 2 7 Differentiate Polishing and Etching in preparation of a specimen in material testing. 1 K1

2 8 What are the etchants used for glass materials? 1 K1 etchants 2 9 Name the Elements of Crystallography. 1 K1 Names 2 10 Define Microstructure of Engineering Materials. 1 K1 Definition 2 11 What do you mean by Inter planer spacing? 1 K1 12 State the importance of Polarization Techniques. 1 K1 Imporatance 2 13 Short note on Quantitative Metallography. 1 K1 14 Give some applications of X- ray Diffraction. 1 K1 application 2 15 State the importance of Specimen Preparation Techniques. 1 K1 Importance 2 UNIT II ELECTRON MICROSCOPY 1 Differentiate between BF & DF imaging techniques. 2 K1 2 What is Selected Area Diffraction? 2 K1 3 What is Transmission Electron Microscopy? 2 K1 4 What is the difference between SEM AND AFM? 2 K1 5 State any four applications of Atomic Force Microscopy? 2 K1 6 Write various application of EPM? 2 K1 7 What do you mean by SEM? 2 K1 8 Give some applications AFM. 2 K1 9 Name the various Imaging Techniques. 2 K1 Names 2 10 Write various application of Imaging Techniques. 2 K1 UNIT III CHEMICAL AND THERMAL ANALYSIS 1 Write the principles of X-Ray Spectrometry. principle 2 3 K1

3 2 List any two methods used for Thermal Analysis. 3 K1 Method 2 3 What is Spectroscopy? Where its is used? 3 K1 Answer -1 2 Uses-1 4 State the difference between DSC and TGA? 3 K1 difference 2 5 What are the applications of Auger Spectroscopy? 3 K1 application 2 6 What do you mean by auger electrons? 3 K1 7 Mention the characteristics that can be identified using DSC. 3 K1 characteristics 2 8 State the importance of Secondary Ion Mass Spectroscopy. 3 K1 9 What are the applications of Proton Induced X-Ray Emission Spectroscopy. 3 K1 10 What do you mean by Wave Dispersive X-Ray Spectrometry. 3 K1 UNIT IV MECHANICAL TESTING STATIC TESTS 1 What is Proof Stress? 4 K1 2 Differentiate between Charpy & Izod tests. 4 K1 3 List the two types of Impact Test. 4 K1 types 2 4 State the importance of DWTT. 4 K1 5 Write the Differentiate between Hardness and Micro Hardness. 4 K1 6 State the importance of Torsion Test. 4 K1 7 Draw the Stress Strain curve for low carbon steel. 4 K1 drawing 2 8 State the importance of Fracture Toughness Test. 4 K1 9 Differentiate Brinell and Vickers Hardness Test. 4 K1 10 What do you mean by Ductility Measurement? 4 K1 UNIT V MECHANICAL TESTING DYNAMIC TESTS

4 1 Sketch the S-N curve for steel. 5 K1 sketch 2 2 What is Creep? 5 K1 3 State the Differentiate between Rotating Beam & Plate Bending tests. 5 K1 4 Define Fatigue. 5 K1 Definition 2 5 Distinguish LCF and HCF. 5 K1 6 What is meant by acoustic emission? 5 K1 7 Draw the schematic S-N curve for copper. 5 K1 drawing 2 8 What is Larson miller parameter? 5 K1 9 What is meant by modal analysis? 5 K1 10 What is the use of Dynamic Test? 5 K1 uses 2 Note : 15 Questions with answer key must be prepared in each unit S.N o Questions Mar k CO s BT L UNIT I MICRO AND CRYSTAL STRUCTURE ANALYSIS 1 Explain the Specimen Preparation Techniques of light optical Microscopy. Preparation Techniques 12 1 K2 2 Explain the working of Geiger Diffractometer. 1 K2 Working procedure 12 3 Explain the principle of Optical Microscopy with neat sketch. 1 K2 principle 6 4 Select a suitable method for Identifying of Crystal Structure and explain the methodology used. 1 K2 Identifying of Crystal Structure 6 methodology 6 5 How to prepare metallic sample for the microstructural analysis using optical microscope? 1 K2 prepare metallic sample 12 6 Briefly explain the operating principles of x-ray diffraction techniques with neat sketch. 1 K2 operating principles 6

5 UNIT II ELECTRON MICROSCOPY 1 Explain the working principle of Atomic Force Microscopy. 2 K2 working principle 12 2 K2 2 How to prepare a Al based sample for TEM analysis? Explain the various steps involved. 2 K2 Sequence of sample preparation 6 steps 6 3 Explain the working principle of SEM and applications. 2 K2 working principle 8 applications 4 4 With diagram, explain the sequence of specimen preparation of a metallic sample for TEM studies. 2 K2 sequence of specimen preparation 6 diagram 6 5 Explain about BF & DF imaging techniques. 2 K2 BF imaging techniques 6 DF imaging techniques 6 6 Explain in detail about Electron Probe Microanalysis. 2 K2 UNIT III CHEMICAL ANDTHERMAL ANALYSIS 1 Describe the working principle and application of Secondary Ion Mass Spectroscopy. working principle 8 3 K2 application 4 2 Explain in detail about Differential Scanning Calorimetry and applications. 3 K2 details 8 application 4 3 Explain in detail about Thermo Gravity metric Analysis. 3 K2 4 Explain the working principle of Differential Thermal Analysis. 3 K2 working principle 12 5 Explain the working principle of Auger Spectroscopy. 3 K2 working principle 12 6 Describe the working principle and application of Wave Dispersive X-Ray Spectrometry. 3 K2 working principle 8 application 4 UNIT IV MECHANICAL TESTING STATIC TESTS 1 Explain Brinell hardness test. 4 K2 drawing 6 details 6 2 Explain Rockwell hardness test. 4 K2 drawing 6

6 details 6 3 Write down the steps involved in conducting Micro Hardness Test. 4 K2 steps 12 4 Explain the working principle of Fracture Toughness Test. 4 K2 working principle 12 5 How the ductility measurement done. 4 K2 6 What is Fracture Toughness? Explain the method to determine Fracture Toughness. 4 K2 Fracture Toughness 3 method 9 UNIT V MECHANICAL TESTING DYNAMIC TESTS 1 Explain the terms low cycle fatigue and high cycle fatigue with suitable example. 5 K2 low cycle fatigue 6 high cycle fatigue 6 2 Explain S-N curves with neat sketches. 5 K2 details 6 3 Explain about Rotating Beam Bending HCF test. 5 K2 4 Explain about plate Bending HCF test. 5 K2 5 Briefly explain the Crack Growth studies. 5 K2 6 Highlight the key difference between HCF and LCF tests. 5 K2 difference 12 Note : 6 Questions with answer key must be prepared in each unit S.No Questions Mark COs BTL UNIT I MICRO AND CRYSTAL STRUCTURE ANALYSIS 1 1. Briefly explain the following: (1) Any two methods of determining ASTM grain size (10) (2) 1 K2 Sequence of specimen preparation for optical microscopy.(10) 2 (1) Explain in detail about Elements of Crystallography.(12) 1 K2 (2) Explain Bragg s law X- ray Diffraction (8) 1 K2 details 8 UNIT II ELECTRON MICROSCOPY 1 Explain in detail about the various Imaging Techniques in SEM. 2 K2 detail 10 2 With neat sketch, explain the construction and working principles of AFM. 2 K2

7 sketch 4 construction and working principles 6 UNIT III CHEMICAL ANDTHERMAL ANALYSIS 1 Briefly explain the following: (i) X-Ray Spectrometry (10) (ii) Transform Infra Red Spectroscopy 10) 3 K2 X-Ray Spectrometry 10 Transform Infra Red Spectroscopy 10 2 With neat sketch, explain the construction and working principles of Proton Induced X-Ray Emission Spectroscopy. 3 K2 sketching 6 construction and working principles 14 UNIT IV MECHANICAL TESTING STATIC TESTS 1 Describe the working principle and application of tensile test and Torsion Test. 4 K2 working principle 10 application 10 2 Briefly explain the Brinell and Vickers Hardness Test. 4 K2 Brinell 10 Vickers 10 UNIT V MECHANICAL TESTING DYNAMIC TESTS 1 What is dynamic testing? Enumerate the advantages of dynamic testing. 5 K2 answer 10 advantages 10 2 Explain creep tests with neat sketches. 5 K2 details 14