Mate Advanced Study Guide Test.

MATE ADVANCED STUDY GUIDE TEST. For most materials, axially applied tensile force results in _______ values of stress & strain, whereas axially applied compressive compressive force results in ________ values of stress & strain. - CORRECT ANSWER (positive)(negative) _________ stress is defined as the instantaneous force applied to a material, divided by the original cross sectional area over which the stress acts. _________ strain is defined as the instantaneous dimension change a material exhibits along an axis of interest, divided by the original dimension of the material along that axis. - CORRECT ANSWER (Engineering) (Engineering) Consider the stress-strain response of a ductile metal near room temperature measured via a constant strain rate tensile test. The initial linear regime of the response is best characterized as __________ deformation. - CORRECT ANSWER bond stretching Hooke's Law applies in... - CORRECT ANSWER elastic regime reasonable values for the elastic modulus of a typical structural metal - CORRECT ANSWER 10-900 GPa yield point - CORRECT ANSWER the max elastic stress tensile strength - CORRECT ANSWER the max engineering stress elastic modulus - CORRECT ANSWER "E", the higher the elastic modulus the stiffer the material A material property that allows one to convert between perpendicular and oppositely-signed elastic strains is called __________ . - CORRECT ANSWER Poisson's ratio _______ is a material property that pertains to local resistance to plastic deformation, such as scratching or denting. It is often measured by poking a material with a very hard tip (like diamond) and measuring the size and depth of the resulting crater that forms. - CORRECT ANSWER hardness For a typical ductile metal that undergoes a standard tensile test (axial loading, constant strain rate conditions), the true stress experienced by the specimen is expected to be _______ than the engineering stress, but the difference between these values is relatively minimal within the _______ regime. - CORRECT ANSWER (higher)(elastic)