Author: haroonkhan

The behaviour of a material is also dependent on the rate at which the load is applied. For example, low-carbon steel shows a considerable increase in yield strength with increasing rate of strain. In addition, increased work hardening occurs at high strain rates. This results in reduced local necking, hence, a greater overall material ductility…

Hardness means as the resistance to penetration. Testing for hardness can be divided into three categories: Scratch tests involve comparatively scratching progressively harder materials. Mohs hardness scale is used for the test. Diamond, the hardest material, is assigned a value of 10. Decreasing values are assigned to other minerals, down to 1 for the soft mineral,…

Hook’s law: Hook’s law states that stress and strain are proportional to each other under elastic limit. Originally, Hooke’s law specified that stress was proportional to strain but Thomas Young introduced a constant of proportionality which is known as Young’s modulus. Further, this name was superseded by modulus of elasticity. where E is modulus of elasticity, σ is stress, and…

The important mechanical properties are listed below:

Engineering materials play a vital role in this modern age of science and technology. Various kinds of materials are used in industry to meet the requirements of human beings. The selection of a specific material for a particular use is a very complex process. However, one can simplify the choice if the details about use…