CH 3 HW MP

If engineering stress and true stress were measured simultaneously during a tensile test, which would have the higher value?

True stress.

The shear modulus of elasticity is approximately what percent of Young's modulus?

40%.

Which one of the following materials has the highest hardness?

Alumina ceramic.

Which of the following are the three basic types of static stress to which a material can be subjected?

Compression. Shear. Tensile.

Which one of the following materials has the highest modulus of elasticity?

Diamond.

Which one of the following types of stress-strain relationship best describes the behavior of metals at temperatures above their respective recrystallization points?

Elastic and perfectly plastic.

Which one the following types of stress-strain relationship best describes the behavior of brittle materials such as ceramics and thermosetting plastics?

Perfectly elastic.

The strength coefficient and strain-hardening exponent measured in a tensile test for a given metal are nearly identical to those measured in a compression test.

T

The modulus of elasticity is also known as which one of the following?

Young's modulus.

The plastic region of the stress-strain stress curve for a metal is characterized by a proportional relationship between stress and strain.

f