Non-Destructive testing of Weldments

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NON-DESTRUCTIVE TESTING

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Presentation transcript:

Non-Destructive testing of Weldments Welding Technology/5.9 Destructive testing of Weldments-2

Radiography The radiation used in radiography testing is a higher energy (shorter wavelength) version of the electromagnetic waves that we see as visible light. The radiation can come from an X-ray generator or a radioactive source Welding Technology/5.9 Destructive testing of Weldments-2

Radiographic Images Welding Technology/5.9 Destructive testing of Weldments-2

Eddy Current Testing Welding Technology/5.9 Destructive testing of Weldments-2

Eddy Current Testing Eddy current testing is particularly well suited for detecting surface cracks but can also be used to make electrical conductivity and coating thickness measurements. Here a small surface probe is scanned over the part surface in an attempt to detect a crack Welding Technology/5.9 Destructive testing of Weldments-2

Ultrasonic Inspection (Pulse-Echo) High frequency sound waves are introduced into a material and they are reflected back from surfaces or flaws. Reflected sound energy is displayed versus time, and inspector can visualize a cross section of the specimen showing the depth of features that reflect sound. Welding Technology/5.9 Destructive testing of Weldments-2

Ultrasonic Imaging High resolution images can be produced by plotting signal strength or time-of-flight using a computer- controlled scanning system Welding Technology/5.9 Destructive testing of Weldments-2