4. What is difference between radiography testing (RT) and ultrasonic testing (UT)

Question

Accepted Answer

Radiography testing (RT) and ultrasonic testing (UT) are both non-destructive testing methods used to detect flaws in materials.

Radiography testing uses X-rays or gamma rays to create an image of the internal structure of an object, while ultrasonic testing uses high-frequency sound waves.
RT is typically used for thicker materials and can detect both surface and subsurface defects, while UT is more commonly used for thinner materials and can only detect surface defects.
RT provides a visual representation of the flaws, while UT provides numerical data about the size, location, and nature of the defects.
RT is often used in industries such as oil and gas, aerospace, and construction, while UT is commonly used in industries such as automotive, manufacturing, and electronics.
Both methods have their advantages and limitations, and the choice between RT and UT depends on factors such as the material being tested, the type of defect being searched for, and the required level of accuracy.

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