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picture1_Radiographic Testing Pdf 90439 | Me6019 Ndt Lecture Notes 5


picture2_Radiographic Testing Pdf 90439 | Me6019 Ndt Lecture Notes 5 picture3_Radiographic Testing Pdf 90439 | Me6019 Ndt Lecture Notes 5

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File: Radiographic Testing Pdf 90439 | Me6019 Ndt Lecture Notes 5
UNIT V RADIOGRAPHIC TESTING RADIOGRAPHIC TESTING Fundamental principles The method of radiographic testing involves the use of a source of radiation from which the radiations hit the test specimen, pass ...

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...Unit v radiographic testing fundamental principles the method of involves use a source radiation from which radiations hit test specimen pass through it and are detected by suitable detector placed on side opposite to that this is schematically shown in figure while passing absorbed accordance with thickness physical density internal defects system therefore receives differential different parts defective recorded onto arrangement film typical set up properties x rays gamma electromagnetic have following common i they invisible ii cannot be felt human senses iii cause materials fluoresce fluorescent zinc sulfide calcium tungstate diamond barium platinocyanide napthalene anthracene stilbene thalium activated sodium iodide etc iv travel at speed light e cm sec harmful living cells vi can ionization detach electrons atoms gas producing positive negative ions vii straight line being waves also reflected refracted diffracted viii obey inverse square law according intensity point inversely p...
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