![]() Young’s modulus measures the resistance of a material to elastic (recoverable) deformation under load. What happens when Young’s modulus increases? This is important for almost everything around us, from buildings, to bridges to vehicles and more. The Young’s modulus of a material is a useful property to know in order to predict the behaviour of the material when subjected to a force. In other words, it is how easily it is bended or stretched. The Young’s Modulus (or Elastic Modulus) is in essence the stiffness of a material. It is dependent upon temperature and pressure however. The Young’s Modulus of a material is a fundamental property of every material that cannot be changed. ![]() On what factors does Young’s modulus depends? Strain = Δ L L = Change in Length Original Length. Strain deals mostly with the change in length of the object. Strain occurs when force is applied to an object. Strain is simply the measure of how much an object is stretched or deformed. The units of Young’s modulus in the English system are pounds per square inch (psi), and in the metric system newtons per square metre (N/m2). This is a specific form of Hooke’s law of elasticity. ![]() Young’s modulus = stress/strain = (FL0)/A(Ln − L0). What is the point P shown on the stress strain curve? Explanation: It is the point showing the maximum stress to which the material can be subjected in a simple tensile stress. What is the point shown in the stress strain curve? The neck eventually becomes a fracture when enough strain is applied. Once necking has begun, the neck becomes the exclusive location of yielding in the material, as the reduced area gives the neck the largest local stress. Necking or localized deformation begins at maximum load, where the increase in stress due to decrease in the cross-sectional area of the specimen becomes greater than the increase in the load-carrying ability of the metal due to strain hardening. If the strain measurement is also based on instantaneous measurements, the curve, which is obtained, is known as a true-stress-true-strain curve. If the true stress, based on the actual cross-sectional area of the specimen, is used, it is found that the stress-strain curve increases continuously up to fracture. True strain equals the natural log of the quotient of current length over the original length. What are engineering stress and strain what are true stress and strains?Įngineering strain is the amount that a material deforms per unit length in a tensile test. What is the difference between Young’s modulus and bulk modulus?.What is Young’s modulus and Poisson’s ratio?.Is Poisson’s ratio positive or negative?.What material has the highest Young’s modulus?.What does a higher Young’s modulus mean?.What happens when Young’s modulus increases?.On what factors does Young’s modulus depends?.What is the point shown in the stress strain curve?.What is the difference between engineering and true stress-strain curve?.How do you get true stress from engineering stress?.Why do we use engineering stress instead of true stress?. ![]()
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