explain how you would compare the strength of of different materials
Answers
Answer:
In the mechanics of materials, the strength of a material is its ability to withstand an applied load without failure or plastic deformation. The field of strength of materials deals with forces and deformations that result from their acting on a material.
Step-by-step explanation:
Strength of materials, also called mechanics of materials, deals with the behavior of solid objects subject to stresses and strains. The complete theory began with the consideration of the behavior of one and two dimensional members of structures, whose states of stress can be approximated as two dimensional, and was then generalized to three dimensions to develop a more complete theory of the elastic and plastic behavior of materials.
The study of strength of materials often refers to various methods of calculating the stresses and strains in structural members, such as beams, columns, and shafts. The methods employed to predict the response of a structure under loading and its susceptibility to various failure modes takes into account the properties of the materials such as its yield strength, ultimate strength, Young's modulus, and Poisson's ratio; in addition the mechanical element's macroscopic properties (geometric properties), such as its length, width, thickness, boundary constraints and abrupt changes in geometry such as holes are considered.
Answer :
In the mechanics of materials, the strength of a material is its ability to withstand an applied load without failure or plastic deformation. The field of strength of materials deals with forces and deformations that result from their acting on a material.
Strength of Materials
Cracks and Flaws
The strength of materials are given by the microstructure and structure flaws of the material. Machined components are strength influenced by residual stresses and microcracks in the subsurface due to the process. Grinding processes lead to longitudinal, radial, and lateral surface cracks. For material strength, longitudinal and radial cracks are important because of the stress concentration of these notch effects.
The detection of cracks and flaws by dye penetration technique, non-destructive optical, or scanning electronic microscopically methods are not suitable for ceramics because of the size of the microcracks. Only macro-cracks can be detected with these methods.
The most common technique for crack detection in ceramics is the cross section polishing technique. Therefore, the specimen were cut perpendicular to the machined surface. This cross-section will be polished with diamond grits of 3 to 1 μm to remove the influenced layer of the cross-section. Figure 3.62 shows lateral cracks underneath scratches of alumina in a cross-sectional view
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