Industrial Radiology: The Use of Radioactive Isotopes in Flaw Detection |
Contents
PHYSICAL AND ENGINEERING FUNDAMENTALS | 7 |
The Law of Radioactive Decay | 17 |
Radioactive Sources Used in Industrial Radiography | 26 |
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Common terms and phrases
absorbed absorption according activity appear atomic attenuation barrier beam calculated chamber characteristic charge chart coefficient considerable constant container counters cracks curves defects density depends determined device diminishes direction disintegration distance dose dose rate duralumin effect electric electron element emitted employed energy ensure equal exposed exposure expressed factor fatigue film fluorescent formed gamma gamma-graphs gamma-quanta gamma-radiography gamma-rays gamma-source given grade gram radium equivalent half-life increase inspection intensity ionisation irradiation lack of fusion layer lead foils length light limit lines load material maximum means measured metal method nature nuclei obtained operation pass placed plate possess possible preparation produced protective radiation dose radiation source radioactive isotopes radiographed range rays reduce relative result Roentgen scattered screens sensitivity shield shows smaller specific spectrum steel substance Table thickness tion unit various walls weight welds X-ray xeroradiographic