Feb 15, 2022
Comparison between crystal slip and twinning can be made in aspects like defect type, change in crystal axis, stress requirement, visibility and occurrence threshold ..
Aug 27, 2021
If a specimen is subjected to high stress beyond its withstand strength, it fails and fracture of material occurs in two or more portions of the test specimen. ..
Aug 27, 2021
The deformation of solid materials has two elements: change in shape (distortion) and change in volume (dilatation). However, dilation is considered negligible in solid ..
Feb 1, 2021
The smallest unit of material, atom, consists of three particles. They are Electron, Proton, and Neutron. Electrons are negatively charged particles of magnitude ..
Jan 27, 2020
A polymer is a compound formed of repeating structural units called mers, whose atoms share electrons to form huge molecules. Polymers usually consist of carbon ..
Oct 21, 2017
Hooke’s law is the proportionality gives the relationship between elastic strain (ε) and stress (σ): Where ‘E’ is Young’s modulus of elasticity. ..
Oct 14, 2017
When the surfaces of bearing are separated by a fluid film, the bearing materials do not have any effect on its operation so long as the parts have sufficient strength ..
Sep 2, 2017
Normalizing process is a heat treatment process for making material softer but does not produce the uniform material properties as produced with an annealing process. ..
Feb 21, 2017
Brittle fracture is one of the major concerns in Industrial Damage Mechanism and characterized by a sudden fracture in the material under stress. Normally all materials ..
Jan 25, 2017
You are viewing first 10 short questions and answers that are usually asked during an interview on material science and engineering topic.
Dec 12, 2016
Mechanical properties (such as the strength, ductility, toughness, and ductile-brittle transition) depend upon the crystal structure and imperfections. Point defects ..
May 11, 2016
The important properties of an engineering material determine the utility of the material which influences quantitatively the response of a given material ..
May 10, 2016
Some of the micro constituents of Iron and Steel are Austenite, Ferrite, Cementide, Pearlite, Bainite, Martenite, Troostite, Sorbite and Ledeburite. Austenite (γ-iron): ..
Apr 14, 2016
Defects formed in steels during heat treatment are listed below. Decarburization: Heating of metals for long periods at high temperature in oxidizing atmosphere ..