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Showing posts with label Machine Design. Show all posts
Showing posts with label Machine Design. Show all posts

Wednesday, 26 August 2020

Transmission Electron Microscope | TEM

Working Principles:
A transmission electron microscope fires a beam of electrons through a specimen to produce a magnified image of an object.
TEM working flows.

Tuesday, 25 August 2020

Scanning Electron Microscope | SEM

Working Principles: Produces images of a sample by scanning the surface with a focused beam of electrons. Electrons from the beam hit the surface of the sample and bounce off it as the secondary electron, backscattered electron etc. A detector registers these scattered electrons and turns them into a picture.
SEM Working flows.

Monday, 24 August 2020

X-RAY Powder Diffractometer | XRD

Working Principles:

X-rays are collimated and directed onto the sample. As the sample and detector are rotated, the intensity of the reflected X-rays is recorded. When the geometry of the incident X-rays impinging the sample satisfies the Bragg Equation, constructive interference and a peak in intensity occur. A detector records and processes this X-ray signal and converts the signal to a count rate which is then output to a device such as a printer or a computer monitor. Every crystalline substance gives a pattern; the same substance always gives the same pattern, and in a mixture of substances each produces its pattern independently of the others. The X-ray diffraction pattern of a pure substance is, therefore, like the fingerprint of the substance.


Manufacturing & Service Operations | Functions of Supply Chain

Supply Chain A  supply chain  is a network of individual functions within an organization that begins with the development of a stra...