Material definitions 0.0 / 5 ? PhysicsMaterialsASAQA Created by: meilaCreated on: 07-03-16 18:14 Breaking stress Maximum tensile stress that produces a fracture 1 of 11 Elastic limit This is the maximum force a body can endure and still regain its original shape and size when the force applied is removed 2 of 11 Hooke's Law The extension of a stretched spring or wire is proportional to the force applied provided that it does not exceed the limit of proportionality 3 of 11 Ductility This is a property of a material whereby it can be permanently stretched 4 of 11 Elasticity A Material regains its original shape and size when the deforming force is removed 5 of 11 Brittleness Material cannot be permanently stretched. They break one elastic limit is exceeded 6 of 11 Stiffness The stiffness of a body is a measure of its resistance to changes in size and or shape 7 of 11 Stress Is the forced applied divided by the cross sectional area it operates over. It is the force per unit area of cross section. Pa 8 of 11 Yield Point A large extension is produced for a small increase in force. Materials showing this is said to have plastic behaviour 9 of 11 Strength Is the maximum force applied to a body before it breaks 10 of 11 Strain It is the ratio of the change in length to the original length. It can also be considered as the extension per unit length. No dimesions 11 of 11
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