Podcast
Questions and Answers
What is the purpose of fatigue strength testing?
What is the purpose of fatigue strength testing?
- To determine the fatigue life of components (correct)
- To establish the stress level at which structural failure will occur
- To measure the compressive strength of materials
- To measure the tensile strength of materials
Which type of test piece is used in fatigue strength testing?
Which type of test piece is used in fatigue strength testing?
- Test piece with a ball race fitted at one end (correct)
- Test piece with a flat plate shape
- Round test piece with a smooth surface
- Specially shaped test piece with a square cross-section
What is measured to determine fatigue failure in fatigue strength testing?
What is measured to determine fatigue failure in fatigue strength testing?
- Number of revolutions completed
- Number of cycles completed (correct)
- Amount of tension and compression applied
- Duration of the test
Why are aircraft subjected to fatigue tests?
Why are aircraft subjected to fatigue tests?
What does an airframe fatigue test provide for design engineers?
What does an airframe fatigue test provide for design engineers?
In airframe fatigue testing, what is determined to aid in the development of maintenance programs?
In airframe fatigue testing, what is determined to aid in the development of maintenance programs?
What are some of the properties tested for in metallic materials after a heat-treatment process?
What are some of the properties tested for in metallic materials after a heat-treatment process?
Why is it necessary to test the material after a heat-treatment process?
Why is it necessary to test the material after a heat-treatment process?
Which of the following methods is NOT mentioned as a commonly used method for hardness measurement?
Which of the following methods is NOT mentioned as a commonly used method for hardness measurement?
In the Brinell hardness tester, what is used to impress a spherical penetrator into the surface of a sample?
In the Brinell hardness tester, what is used to impress a spherical penetrator into the surface of a sample?
How is the hardness value converted in the Brinell method?
How is the hardness value converted in the Brinell method?
Which of the following properties is NOT typically tested in metallic materials after a heat-treatment process?
Which of the following properties is NOT typically tested in metallic materials after a heat-treatment process?
What does the Rockwell hardness tester measure?
What does the Rockwell hardness tester measure?
How are results displayed in a Rockwell hardness test?
How are results displayed in a Rockwell hardness test?
What does a Brinell hardness tester measure?
What does a Brinell hardness tester measure?
How is tensile strength tested in ferrous metals?
How is tensile strength tested in ferrous metals?
In a Rockwell hardness test, what do the Rockwell numbers represent?
In a Rockwell hardness test, what do the Rockwell numbers represent?
How do Rockwell testers differ from Brinell testers in terms of measurement units?
How do Rockwell testers differ from Brinell testers in terms of measurement units?
What is the main difference between the Izod and Charpy impact tests?
What is the main difference between the Izod and Charpy impact tests?
What shape is the specimen in the Charpy V-notch impact test?
What shape is the specimen in the Charpy V-notch impact test?
What type of configuration does the Izod impact test use?
What type of configuration does the Izod impact test use?
What instrument fractures the standard-size notched material in both the Charpy and Izod impact tests?
What instrument fractures the standard-size notched material in both the Charpy and Izod impact tests?
What happens to the pendulum hammer after it strikes and fractures the specimen at the V-notch in the Charpy V-notch impact test?
What happens to the pendulum hammer after it strikes and fractures the specimen at the V-notch in the Charpy V-notch impact test?
What is the most common impact testing method used for metals today?
What is the most common impact testing method used for metals today?
