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The document discusses various mechanical properties of materials including stress and strain, strength, elasticity, plasticity, stiffness, ductility, malleability, resilience, hardness, brittleness, creep, and fatigue. It defines each property and provides examples.
This document discusses various mechanical properties of materials including elastic deformation, engineering strain, tensile strength, toughness, yielding, modulus of elasticity, Poisson's ratio, ductility, malleability, hardness, and fatigue.
Outline Introduction Concepts of stress and strain Elastic deformation. Stress-strain behavior. Elastic properties of materials.
The document discusses various mechanical properties of materials including strength, stiffness, elasticity, plasticity, ductility, brittleness, hardness, toughness, fatigue, creep, resilience, and malleability. Strength is the ability to withstand load before failure. Stiffness is the resistance to deformation under stress.
Summary. Stress and strain: These are size-independent measures of load and displacement, respectively. Elastic behavior: This reversible behavior often shows a linear relation between stress and strain. To minimize deformation, select a material with a large elastic modulus (E or G).
For these reasons, the mechanical properties are determined using a different approach, the …….…………………..: • specimen geometry is either circular or rectangular cross section • during the test, the top surface is under compression while the bottom surface is under tension • maximum tensile stress occurs on
Mechanical properties determine a material’s behavior when subjected to mechanical stresses Properties include elastic modulus, ductility, hardness, and various measures of strength Dilemma: mechanical properties that are desirable to the designer, such as high strength, usually make manufacturing more difficult ©2010 John Wiley & Sons, Inc ...