Subject: Testing Of Materials (TOM), Subject Code: OML751 All 5 units important questions.

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© S.Thirumalvalavan, AP/Mech, 5104-AEC.
OML751 – TESTING OF MATERIALS
UNIT-I : INTRODUCTION TO MATERIALS TESTING
ASSIGNMENT – I
Part-A (All 5 questions)
1. Why more concentration is needed for selection of materials?
2. What are the benefits of testing?
3. What are types of material testing?
4. What are factors to be considered during selection of materials>
5. What are stages in development of testing?
Part-B (Any 5 questions)
1. Explain various stages in development of testing in detail. What is the purpose of developing a
test? Explain with few examples.
2. How will you represent the result analysis of testing?
3. Differentiate between NDT and Destructive testing.
4. What are the advantages and disadvantages encountered by various material testing?
5. What are criteria that affect the selection of materials?
6. What are steps to be followed during selection of materials? Explain each step in detail.

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© S.Thirumalvalavan, AP/Mech, 5104-AEC.
OML751 – TESTING OF MATERIALS
UNIT-II : MECHANICAL TESTING
ASSIGNMENT – II
Part-A (All 5 questions)
1. Define strain hardening and proof stress.
2. What are advantages made the choice of Brinell hardness test?
3. What is modulus of rupture in bending nature?
4. Define endurance limit.
5. What is role of SN curve in fatigue mechanism?
Part-B (Any 5 questions)
1. What are the various destructive tests available and which is more suitable to the hardness of
material?
2. What are properties arrived from the bending test? How do you relate with failure of section?
3. Explain the working principle of machines used to conduct Charpy and Izod impact test. How
specimens are put-up in both the tests?
4. Explain briefly – Fatigue test. How the S-N curve constructed?
5. Explain with neat sketch – Creep test. Also explain the various stages of creep curve.
6. Briefly explain – Tensile test. List out the Advantages, Limitations and Applications.
7. In the steel industry, iron rod is manufactured. Now, the iron rod is need to quality check. What
is the quickest test available for testing various properties?
List out the Advantages, Limitations and Applications for all questions.

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© S.Thirumalvalavan, AP/Mech, 5104-AEC.
OML751 – TESTING OF MATERIALS
UNIT-III : NON DESTRUCTIVE TESTING
ASSIGNMENT – III
Part-A
1. Define NDT.
2. What is purpose penetrant in liquid penetrant inspection?
3. How densities of material influence the radiographic testing?
4. Define pulsed thermography.
5. What is the principle of working in Acoustic emission test?
Part-B
1. Explain briefly with neat sketch – Liquid penetrant test.
2. Explain briefly with neat sketch – Magnetic particle test.
3. Explain briefly with neat sketch – Thermography test.
4. Explain briefly with neat sketch – Radiographic test.
5. Explain briefly with neat sketch – Eddy current test.
6. Explain briefly with neat sketch – Ultrasonic testing.
7. Explain briefly with neat sketch – Acoustic emission
Write the Introduction, Principle, Techniques, Types, Working with suitable diagrams &
List out the Advantages, Limitations and Applications for all questions.

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© S.Thirumalvalavan, AP/Mech, 5104-AEC.
OML751 – TESTING OF MATERIALS
UNIT-IV : MATERIAL CHARACTERIZATION TESTING
ASSIGNMENT – IV
Part-A (Answer ALL Questions)
1. Define Magnification.
2. State Diffraction principle.
3. What are the methods of Spectroscopy?
4. Why specimen preparation is important in microscopic technique?
5. Difference between Optical and Electron microscope.
Part-B (Answer ANY 5 Questions)
1. Explain briefly with neat sketch – Optical microscope
2. Explain briefly with neat sketch – Electron microscope: Scanning Electron Microscope (SEM).
3. Explain briefly with neat sketch – Electron microscope: Transmission Electron Microscope (TEM).
4. (i) Difference between Optical and Electron microscope.
(ii) Write major contrast between SEM & TEM.
5. List out the Common types of Spectroscopy. Explain briefly with neat sketch – Atomic
spectroscopy (or) Flame spectroscopy.
6. Explain briefly with neat sketch – UV/Visible spectroscopy.
7. List out the Common types of Electrical techniques. Explain briefly with neat sketch – Electrical
Impedance Spectroscopy (EIS).
8. Define Magnetic technique. Explain briefly – Electromagnetic technique.
Write the Introduction, Principle, Techniques, Types, Specimen preparation, Components, Working
with suitable diagrams & List out the Advantages, Limitations and Applications for all questions.

5. Page 1 of 1
© S.Thirumalvalavan, AP/Mech, 5104-AEC.
OML751 – TESTING OF MATERIALS
UNIT-V : OTHER TESTING
ASSIGNMENT – V
Part-A (Answer ALL Questions)
1. Define Nebulizer.
2. What is meant by Dilatometer?
3. Define inductively coupled plasma.
4. How X ray is utilized in XRF spectroscopy?
5. Define chemical testing. Types of chemical composition techniques & test.
Part-B (Answer ANY 5 Questions)
1. Explain briefly with neat sketch – Differential Scanning Calorimetry (DSC)
2. Explain briefly with neat sketch – Differential Thermal Analysis (DTA)
3. Explain briefly with neat sketch – Thermo-Mechanical Analysis (TMA)
4. Explain briefly with neat sketch – Thermo-Mechanical Dynamic Analysis (DMA)
5. Explain briefly with neat sketch – X-Ray Fluorescence (XRF)
6. Briefly explain – Exciting source of mass and Emission spectrometry. (It includes, Types of
plasma, ICP, Production of Plasma…)
7. Explain briefly with neat sketch – ICP : OES
8. Explain briefly with neat sketch – ICP : MS
Write the Introduction, Principle, Techniques, Types, Specimen preparation, Components, Working
with suitable diagrams & List out the Advantages, Limitations and Applications for all questions.