LHTB Materials and Hardware - 0.1b Aircraft Materials Ferrous

In a tensile strenght test

• the material is pulled to limit of elasticity

• the material is pulled until it breaks

• the material is pulled until it reaches its UTS

impact resistance measures the

• material toughness

• material hardness

• material ductility

specified time of contant between the indentor and test piece in a vickers or brinell hardness test is

• 20 seconds

• 10 seconds

• 15 seconds

in an izod impact test the striking energy of the striker is approximately

• 150J

• 163J

• 300J

the charpy test measures

• strain

• impact energy

• youngs modulus

the fatigue limit for steel is generally in the region of compared to the static UTS

• 40 to 60 percent

• 60 to 80 percent

• 20 to 40 percent

the ability of mild steel to accept more load after the yield point is reached is due to

• necking

• strain hardening

• plasticisation

what is a rockwell tester used for?

• hardness testing

• tensile testing

• fatigue testing

what type of test involves using a weightened pendulum to strike a material until fracture?

• hardness test

• impact resistance test

• fatigue testing

which of the following are all hardness testing machines?

• rockwell, brinell and izod

• rockwell, vickers and izod

• rockwell, brinell, and vickers