1
Arulmigu Meenakshi Amman college of Engineering
Vadamavandal-604410.
Prepared by,
V.Umapathy,
Prof./Mech.
Imortant Questions and Answers
OML751-Testing of Materials
Syllabus
1. UNIT I INTRODUCTION TO MATERIALS TESTING 9
Overview of materials, Classification of material testing, Purpose of testing, Selection of
material, Development of testing, Testing organizations and its committee, Testing
standards, Result Analysis, Advantages of testing.
2. UNIT II MECHANICAL TESTING 9
Introduction to mechanical testing, Hardness test (Vickers, Brinell, Rockwell), Tensile test,
Impact test (Izod, Charpy) - Principles, Techniques, Methods, Advantages and Limitations,
Applications. Bend test, Shear test, Creep and Fatigue test - Principles, Techniques,
Methods, Advantages and Limitations, Applications.
3. UNIT III NON-DESTRUCTIVE TESTING 9
Visual inspection, Liquid penetrant test, Magnetic particle test, Thermography test –
Principles, Techniques, Advantages and Limitations, Applications. Radiographic test, Eddy
current test, Ultrasonic test, Acoustic emission- Principles, Techniques, Methods,
Advantages and Limitations, Applications.
4. UNIT IV MATERIAL CHARACTERIZATION TESTING 9
Macroscopic and Microscopic observations, Optical and Electron microscopy (SEM and
TEM) - Principles, Types, Advantages and Limitations, Applications. Diffraction techniques,
Spectroscopic Techniques, Electrical and Magnetic Techniques- Principles, Types,
Advantages and Limitations, Applications.
5. UNIT V OTHER TESTING 9
Thermal Testing: Differential scanning calorimetry, Differential thermal analysis.
Thermomechanical and Dynamic mechanical analysis: Principles, Advantages, Applications.
Chemical Testing: X-Ray Fluorescence, Elemental Analysis by Inductively Coupled Plasma-
, 2
Optical Emission Spectroscopy and Plasma-Mass Spectrometry.
S.No. Description
Unit-I
INTRODUCTION TO MATERIALS TESTING
Basic Concepts
Topic Basic Concept / Key Points
Materials are substances used to manufacture engineering components. Major
1. Materials
groups: Metals, Polymers, Ceramics and Composites.
2. Materials Process of determining the mechanical, physical, chemical and technological
Testing properties of a material by conducting standardized tests.
3. Classification of Destructive Testing (DT): specimen is damaged/destroyed. Non-Destructive
Testing Testing (NDT): specimen remains usable.
4. Destructive Includes Tensile, Compression, Impact, Hardness, Fatigue and Creep tests.
Testing Used to determine strength and performance characteristics.
5. Non-Destructive Includes Visual Testing (VT), Ultrasonic Testing (UT), Radiography (RT),
Testing Magnetic Particle Testing (MT) and Liquid Penetrant Testing (PT).
6. Purpose of To determine strength, hardness, toughness, ductility, elasticity, wear
Testing resistance and service performance and to detect defects.
7. Selection of Based on strength, stiffness, toughness, temperature, corrosion resistance,
Material weight, manufacturability, availability and cost.
Testing developed from simple visual and mechanical observations to modern
8. Development of
instrumented, computerized and NDT techniques for accurate quality
Testing
control.
9. Testing Important organizations include BIS, ASTM International, ISO, ASME and
Organizations SAE. They develop and publish testing standards and procedures.
10. Testing Technical committees prepare, review and revise standards to ensure uniform
Committees test methods, accuracy, safety and reliability.
11. Testing Standards specify specimen dimensions, test procedure, equipment, loading
Standards rate, environmental conditions, calculations and reporting format.
Test data are processed using average, graphs, stress–strain curves, deviation
12. Result Analysis
and statistical analysis to evaluate material performance.
13. Advantages of Ensures quality, safety, reliability, material selection, defect detection,
Testing process control and reduced failure/cost.
14. Basic Testing Material Selection → Specimen Preparation → Standard Test → Data
Sequence Collection → Result Analysis → Acceptance/Decision.
⭐ Important Exam Keywords
, 3
DT, NDT, Tensile Test, Hardness, Impact, Fatigue, Creep, UT, RT, MT, PT, BIS, ASTM, ISO,
Standards, Result Analysis, Quality Control.
Two Marks QA
1. What is materials testing?
Answer: Materials testing is the process of determining the physical, mechanical, chemical and other
properties of a material by conducting suitable tests. It helps to assess the quality, performance and
suitability of materials.
2. What are the main classifications of materials testing?
Answer: Materials testing is mainly classified into:
Destructive Testing (DT) – the specimen is damaged or destroyed during testing.
Non-Destructive Testing (NDT) – the material is inspected without causing significant
damage.
3. What is the purpose of materials testing?
Answer: The main purposes are to determine material properties, ensure quality, detect defects, verify
specifications, select suitable materials and predict service performance.
4. What factors are considered in the selection of a material?
Answer: Important factors include strength, stiffness, hardness, toughness, corrosion resistance,
temperature resistance, manufacturability, availability and cost.
5. What is destructive testing? Give two examples.
Answer: Destructive testing is a test in which the specimen undergoes permanent deformation or
failure. Examples are tensile test and impact test.
6. What is non-destructive testing? Give two examples.
Answer: Non-destructive testing is used to detect defects or evaluate materials without significantly
damaging the component. Examples are ultrasonic testing (UT) and radiographic testing (RT).
7. What is a testing standard?
Answer: A testing standard is a documented set of procedures, requirements and specifications used
to perform a test consistently and obtain reliable and comparable results. Examples include ASTM,
ISO and BIS standards.
8. What is the role of testing organizations and committees?
Answer: Testing organizations and committees develop, revise and maintain testing standards and
, 4
procedures. They promote uniformity, reliability, safety and comparability of test results.
9. What is result analysis in materials testing?
Answer: Result analysis is the process of examining and interpreting test data to determine material
properties and performance. It includes comparison with specified standards or acceptance criteria.
10. State any four advantages of materials testing.
Answer: Materials testing helps to:
1. Ensure material quality and reliability.
2. Detect defects and failures.
3. Select suitable materials for specific applications.
4. Improve safety, performance and service life of components.
13 and 15 Marks QA
1. Explain the classification of materials testing and discuss the purpose and importance of
testing materials.
Classification, Purpose and Importance of Materials Testing
1. Classification of Materials Testing
Materials testing is the process of determining the mechanical, physical, chemical and
Arulmigu Meenakshi Amman college of Engineering
Vadamavandal-604410.
Prepared by,
V.Umapathy,
Prof./Mech.
Imortant Questions and Answers
OML751-Testing of Materials
Syllabus
1. UNIT I INTRODUCTION TO MATERIALS TESTING 9
Overview of materials, Classification of material testing, Purpose of testing, Selection of
material, Development of testing, Testing organizations and its committee, Testing
standards, Result Analysis, Advantages of testing.
2. UNIT II MECHANICAL TESTING 9
Introduction to mechanical testing, Hardness test (Vickers, Brinell, Rockwell), Tensile test,
Impact test (Izod, Charpy) - Principles, Techniques, Methods, Advantages and Limitations,
Applications. Bend test, Shear test, Creep and Fatigue test - Principles, Techniques,
Methods, Advantages and Limitations, Applications.
3. UNIT III NON-DESTRUCTIVE TESTING 9
Visual inspection, Liquid penetrant test, Magnetic particle test, Thermography test –
Principles, Techniques, Advantages and Limitations, Applications. Radiographic test, Eddy
current test, Ultrasonic test, Acoustic emission- Principles, Techniques, Methods,
Advantages and Limitations, Applications.
4. UNIT IV MATERIAL CHARACTERIZATION TESTING 9
Macroscopic and Microscopic observations, Optical and Electron microscopy (SEM and
TEM) - Principles, Types, Advantages and Limitations, Applications. Diffraction techniques,
Spectroscopic Techniques, Electrical and Magnetic Techniques- Principles, Types,
Advantages and Limitations, Applications.
5. UNIT V OTHER TESTING 9
Thermal Testing: Differential scanning calorimetry, Differential thermal analysis.
Thermomechanical and Dynamic mechanical analysis: Principles, Advantages, Applications.
Chemical Testing: X-Ray Fluorescence, Elemental Analysis by Inductively Coupled Plasma-
, 2
Optical Emission Spectroscopy and Plasma-Mass Spectrometry.
S.No. Description
Unit-I
INTRODUCTION TO MATERIALS TESTING
Basic Concepts
Topic Basic Concept / Key Points
Materials are substances used to manufacture engineering components. Major
1. Materials
groups: Metals, Polymers, Ceramics and Composites.
2. Materials Process of determining the mechanical, physical, chemical and technological
Testing properties of a material by conducting standardized tests.
3. Classification of Destructive Testing (DT): specimen is damaged/destroyed. Non-Destructive
Testing Testing (NDT): specimen remains usable.
4. Destructive Includes Tensile, Compression, Impact, Hardness, Fatigue and Creep tests.
Testing Used to determine strength and performance characteristics.
5. Non-Destructive Includes Visual Testing (VT), Ultrasonic Testing (UT), Radiography (RT),
Testing Magnetic Particle Testing (MT) and Liquid Penetrant Testing (PT).
6. Purpose of To determine strength, hardness, toughness, ductility, elasticity, wear
Testing resistance and service performance and to detect defects.
7. Selection of Based on strength, stiffness, toughness, temperature, corrosion resistance,
Material weight, manufacturability, availability and cost.
Testing developed from simple visual and mechanical observations to modern
8. Development of
instrumented, computerized and NDT techniques for accurate quality
Testing
control.
9. Testing Important organizations include BIS, ASTM International, ISO, ASME and
Organizations SAE. They develop and publish testing standards and procedures.
10. Testing Technical committees prepare, review and revise standards to ensure uniform
Committees test methods, accuracy, safety and reliability.
11. Testing Standards specify specimen dimensions, test procedure, equipment, loading
Standards rate, environmental conditions, calculations and reporting format.
Test data are processed using average, graphs, stress–strain curves, deviation
12. Result Analysis
and statistical analysis to evaluate material performance.
13. Advantages of Ensures quality, safety, reliability, material selection, defect detection,
Testing process control and reduced failure/cost.
14. Basic Testing Material Selection → Specimen Preparation → Standard Test → Data
Sequence Collection → Result Analysis → Acceptance/Decision.
⭐ Important Exam Keywords
, 3
DT, NDT, Tensile Test, Hardness, Impact, Fatigue, Creep, UT, RT, MT, PT, BIS, ASTM, ISO,
Standards, Result Analysis, Quality Control.
Two Marks QA
1. What is materials testing?
Answer: Materials testing is the process of determining the physical, mechanical, chemical and other
properties of a material by conducting suitable tests. It helps to assess the quality, performance and
suitability of materials.
2. What are the main classifications of materials testing?
Answer: Materials testing is mainly classified into:
Destructive Testing (DT) – the specimen is damaged or destroyed during testing.
Non-Destructive Testing (NDT) – the material is inspected without causing significant
damage.
3. What is the purpose of materials testing?
Answer: The main purposes are to determine material properties, ensure quality, detect defects, verify
specifications, select suitable materials and predict service performance.
4. What factors are considered in the selection of a material?
Answer: Important factors include strength, stiffness, hardness, toughness, corrosion resistance,
temperature resistance, manufacturability, availability and cost.
5. What is destructive testing? Give two examples.
Answer: Destructive testing is a test in which the specimen undergoes permanent deformation or
failure. Examples are tensile test and impact test.
6. What is non-destructive testing? Give two examples.
Answer: Non-destructive testing is used to detect defects or evaluate materials without significantly
damaging the component. Examples are ultrasonic testing (UT) and radiographic testing (RT).
7. What is a testing standard?
Answer: A testing standard is a documented set of procedures, requirements and specifications used
to perform a test consistently and obtain reliable and comparable results. Examples include ASTM,
ISO and BIS standards.
8. What is the role of testing organizations and committees?
Answer: Testing organizations and committees develop, revise and maintain testing standards and
, 4
procedures. They promote uniformity, reliability, safety and comparability of test results.
9. What is result analysis in materials testing?
Answer: Result analysis is the process of examining and interpreting test data to determine material
properties and performance. It includes comparison with specified standards or acceptance criteria.
10. State any four advantages of materials testing.
Answer: Materials testing helps to:
1. Ensure material quality and reliability.
2. Detect defects and failures.
3. Select suitable materials for specific applications.
4. Improve safety, performance and service life of components.
13 and 15 Marks QA
1. Explain the classification of materials testing and discuss the purpose and importance of
testing materials.
Classification, Purpose and Importance of Materials Testing
1. Classification of Materials Testing
Materials testing is the process of determining the mechanical, physical, chemical and
