CWB Level 2 MODULE 7 RESIDUAL STRESS & DISTORTION verified to pass

CWB Level 2 MODULE 7 RESIDUAL STRESS & DISTORTIONDefine Compression? - correct answer To reduce in volume, or the state of being compressed. To force together or into less space Define Contraction? - correct answer To become reduced in size. To pull together, shrink or wrinkle. Define Distortion? - correct answer The act of distorting. A physical change in shape by bending, twisting or warping. Define Ductility? - correct answer Capability of being easily molded or shaped Define Expansion? - correct answer Enlargement or increase. Increase in the dimension of a body Define Intermittent Welding ? - correct answer Welding that is not continuous over the length of the joint Define Lateral Shrinkage? - correct answer The process of being drawn together parallel to the line of the joint Define Longitudinally? - correct answer Running lengthwise or pertaining to length Define Neutral Axis? - correct answer Occupying a middle position of symmetrical shape. Through the center of gravity. Define Peening? - correct answer The act of inducing compression into the surface layers of an object. Often performing by striking the surface of a metal object with a ball shaped device, i.e ball-peen hammer, or blasting with specific procedures, i.e shot peening. Define Periphery? - correct answer The outer part of an object or area Define Residual Stresses? - correct answer Stresses remaining after a process has been completed. Stress present in a material that is free of external forces or thermal gradients. Define Permanent Deformation ? - correct answer Shape change that is not reversible by the removal of the forces (plastic deformation) that caused it. Define Restrain? - correct answer To prevent or limit movement Define Restraint? - correct answer The act of holding back Define Shrinkage Force? - correct answer An internal force exerted on a component due to uneven dimensional change during heating and cooling Define Strain? - correct answer A shape change produced by stress Define Stress? - correct answer An internal force or system of forces that tend to strain or deform an object or body. Force per unit area. Define Symmetrical? - correct answer Exactly uniform in shape about a dividing line or about a center or axis. Define Transverse? - correct answer Situated or lying across Define Tensile Stress? - correct answer A stress that tends to cause elongation or extension Define Upset? - correct answer To make shorter or thicker EXAM QUESTION Section 1-4