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Radiography and ultrasonic testing are non-destructive testing methods that use electromagnetic radiation or high frequency sound waves to detect surface and subsurface defects in metals and non-metals. Radiography can detect discontinuities recorded on film but is not sensitive to planar defects, while ultrasonic testing can detect discontinuities presented on a screen and measure material thickness but requires skilled operators and is not sensitive to defects parallel to the beam direction. Both methods

Author

hari

Language

EN