Transcription of Module 4 - Radiography Testing
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Module 4 - Radiography Testing
Module 5 - Radiography Testing Radiography Radiography is used in a very wide range of applications including medicine, engineering, forensics, security, etc. In NDT, Radiography is one of the most important and widely used methods. Radiographic Testing (RT) offers a number of advantages over other NDT methods, however, one of its major disadvantages is the health risk associated with the radiation. Asst. Prof. Vishnu Sankar,DME,RSET RT is one of the most widely used NDT methods for the detection of internal defects such as porosity and voids. With proper orientation of the X-ray beam, planar defects can also be detected with Radiography . It is also suitable for detecting changes in material composition, thickness measurements and locating unwanted or defective components hidden from view in an assembled part. Asst. Prof. Vishnu Sankar,DME,RSET In general, RT is method of inspecting materials for hidden flaws by using the ability of short wavelength electromagnetic radiation (high energy photons) to penetrate various materials.
in the nucleus is the atoms mass number, and each isotope of a given element has a different mass number. •For example, carbon-12, carbon-13 and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13 and 14 respectively. •Half life •Half-life is the amount of time required for a quantity
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