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Questions and Answers
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?
- Hardness, Tensile strength, Fatigue strength, Impact resistance (correct)
- Malleability, Toughness, Electrical resistivity, Thermal expansion
- Density, Conductivity, Ductility, Corrosion resistance
- Elasticity, Brittleness, Creep strength, Shear strength
What is the purpose of measuring the hardness of a metal?
What is the purpose of measuring the hardness of a metal?
- To assess the strength of the metal (correct)
- To evaluate the weight of the metal
- To measure the electrical conductivity of the metal
- To determine the color of the metal
Which two methods are commonly used for measuring the hardness of metals?
Which two methods are commonly used for measuring the hardness of metals?
- Mohs and Vickers methods
- Brinell and Rockwell methods (correct)
- Barcol and Leeb methods
- Knoop and Shore methods
How is hardness testing typically conducted using a Brinell hardness tester?
How is hardness testing typically conducted using a Brinell hardness tester?
What is measured to determine the Brinell number in hardness testing?
What is measured to determine the Brinell number in hardness testing?
Why is it necessary for a test piece to consist of the same material and thickness as the component being tested during material testing?
Why is it necessary for a test piece to consist of the same material and thickness as the component being tested during material testing?
What is the purpose of conducting fatigue strength testing on aircraft?
What is the purpose of conducting fatigue strength testing on aircraft?
How is fatigue life determined in fatigue strength testing?
How is fatigue life determined in fatigue strength testing?
What type of machine is commonly used for airframe fatigue testing?
What type of machine is commonly used for airframe fatigue testing?
In fatigue strength testing, what is gripped at one end of the test piece?
In fatigue strength testing, what is gripped at one end of the test piece?
What does a fatigue test on an F35 Lighting II aim to identify?
What does a fatigue test on an F35 Lighting II aim to identify?
How is the test piece stressed in tension and compression during fatigue strength testing?
How is the test piece stressed in tension and compression during fatigue strength testing?
What is the main difference between the Brinell and Rockwell hardness testers?
What is the main difference between the Brinell and Rockwell hardness testers?
How is the depth of penetration indicated in a Rockwell hardness tester?
How is the depth of penetration indicated in a Rockwell hardness tester?
What is the purpose of zeroing the Rockwell hardness tester after applying a minor load?
What is the purpose of zeroing the Rockwell hardness tester after applying a minor load?
How is the Tensile Strength Testing of a ferrous metal conducted?
How is the Tensile Strength Testing of a ferrous metal conducted?
What type of load is initially applied in a Rockwell hardness test?
What type of load is initially applied in a Rockwell hardness test?
What do Rockwell testers use to measure hardness?
What do Rockwell testers use to measure hardness?
What is the main difference between the Izod impact test and the Charpy impact test?
What is the main difference between the Izod impact test and the Charpy impact test?
What type of material is commonly used for the specimen in the Charpy V-notch impact test?
What type of material is commonly used for the specimen in the Charpy V-notch impact test?
In the Charpy V-notch technique, how does the fracture of the specimen occur?
In the Charpy V-notch technique, how does the fracture of the specimen occur?
What type of configuration is used in the Izod impact test?
What type of configuration is used in the Izod impact test?
What happens to the pendulum after it strikes and fractures the specimen in the Charpy V-notch technique?
What happens to the pendulum after it strikes and fractures the specimen in the Charpy V-notch technique?
What instrument is used to fracture a standard-size notched piece of material in both Charpy and Izod impact tests?
What instrument is used to fracture a standard-size notched piece of material in both Charpy and Izod impact tests?
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