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  1. 1 point
    kalachoe

    Non destructive testing

    How is it related to mechanical engineering? Isn't it more related to materials science?
  2. 1 point
    Are you sure that this question has any answer other than "enough"? Do you think that there is a general answer that covers all cases? I really doubt that, but I certainly cannot answer your question. I'm anxious for you to post an answer. DrD PS: The answer to the "why?" part is simply to do whatever needs to be done.
  3. 1 point
    Sirazz92 has given a fairly good answer. Pressure usually refers to a distributed external load applied to a body. Stress is the distributed internal loading associated with displacement under load. DrD
  4. 1 point
    Define "Mechanical property" of engineering material State any 6 mechanical properties, give their definition and one example of material possessing the property You can answer this question. You can like the best answer. You can share the question You can get updates of new questions on Facebook linkedin twitter & google plus
  5. 1 point
    The mechanical properties of a material are those properties that involve a reaction to an applied load. The mechanical properties of metals determine the range of usefulness of a material and establish the service life that can be expected. Mechanical properties are also used to help classify and identify material. STRENGTH: The strength of a material is its ability to withstand an applied load without failure or plastic deformation.In machine design yield point or ultimate tensile / shear / compressive strength is used while designing. Stiffness: Stiffness is the rigidity of an object — the extent to which it resists deformation in response to an applied force. The complementary concept is flexibility or pliability: the more flexible an object is, the less stiff it is. Hardness: Hardness is a measure of how resistant solid matter is to various kinds of permanent shape change when a compressive force is applied. Some materials (e.g. metals) are harder than others (e.g. plastics). Elasticity: the ability of an object or material to resume its normal shape after being stretched or compressed. On a stress-strain diagram it is considered to be below proportional limit.But widely this point is taken as the yield point by drawing a line offset by 0.2% parallel to the straight line until it intersects the curve. Plasticity: It describes the deformation of a (solid) material undergoing non-reversible changes of shape in response to applied forces. Brittleness: A material is brittle if, when subjected to stress, it breaks without significant plastic deformation. Brittle materials absorb relatively little energy prior to fracture, even those of high strength.
  6. 1 point

    Version 1.0.0

    651 downloads

    This PDF contains Constants and other Formulaes of different subjects.. SI Multiples. Basic Units (distance, area, volume, mass, density). Mathematical Formulae. Applied Mechanics. Thermodynamics. Fluid Mechanics. Electricity. Periodic Table.