12 Questions
What is the term for the direct contact of one body with the surface of another causing forces?
Surface forces
In which type of material are physical and mechanical properties the same throughout its volume?
Homogeneous material
What is the term for the change in angle between two originally perpendicular line segments?
Shear strain
What term describes the breakdown of a material and its permanent deformation upon a slight increase in stress above the elastic limit?
Yielding
What occurs when an increase in load can be supported by a specimen after yielding, eventually reaching a maximum stress?
Strain hardening
Which of the following factors are determined by the probability of material failure as it relates to the material’s quality and consistency of strength?
Resistance factors
What is the characteristic of a material classified as ductile?
It can be subjected to large strains before fracturing
What occurs when a metal is subjected to repeated cycles of stress or strain?
Fatigue
What is the Modulus of Toughness related to on a stress-strain diagram?
Entire area under the stress-strain diagram
What term describes a material's ability to deform permanently above its elastic limit?
Creep
When does the Modulus of Resilience refer to the strain-energy density?
At the proportional limit
What does the Ductility Factor represent?
$Ratio$ of $modulus$ $of$ $toughness$ $to$ $modulus$ $of$ $resilience$
Test your knowledge on surface forces, body forces, prismatic structures, homogeneous materials, isotropic materials, and load factors in mechanical engineering.
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