Exam Question
Describe the following non-destructive testing methods:
(a) Radiographic inspection, principle, method in detail (8)
(b) Ultrasonic inspection, principle, method in detail (8)
Class 4 (4th Engineer)
MEP
📅 Mar 2023
Reference Answer
### (a) Radiographic Inspection (RT)
Radiographic Testing is a non-destructive testing method that utilizes penetrating ionizing radiation (X-rays or Gamma rays) to examine the internal structure of materials for discontinuities. The resulting image is a two-dimensional shadowgraph of the object's internal volume.
#### Principle
The fundamental principle of RT is the **differential absorption of radiation**. As a beam of radiation passes through an object, it is attenuated (absorbed and scattered). The amount of attenuation depends on the material's density and thickness, as well as the energy of the radiation.
Radiographic Testing is a non-destructive testing method that utilizes penetrating ionizing radiation (X-rays or Gamma rays) to examine the internal structure of materials for discontinuities. The resulting image is a two-dimensional shadowgraph of the object's internal volume.
#### Principle
The fundamental principle of RT is the **differential absorption of radiation**. As a beam of radiation passes through an object, it is attenuated (absorbed and scattered). The amount of attenuation depends on the material's density and thickness, as well as the energy of the radiation.
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