Destructive Test
Destructive Test
Destructive Test
A PRESENTATION OVER
Characteristics of NDT
Applied directly to the product Tested parts are not damaged Various tests can be performed on the same product Specimen preparation not required Can be performed on parts that are in service Low time consumption Low labour cost
NDT Methods
Visual Inspection Liquid penetrant method Ultrasonic Inspection Radiography methods Eddy current testing Magnetic particle testing
1 Visual Inspection
Most basic and common inspection method.
4. X-Ray Radiography
X-rays are passed through the specimen under inspection and it is differentially absorbed by the specimen. The transmitted x-rays are received by the photographic film and the film is developed.
The dark and light shadows reveal the defects present in the specimen and hence the defects are defected.
X-ray film
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Uses of NDT
To detect internal or surface flaws To measure the dimensions of materials To determine the materials structure To evaluate the physical and mechanical properties of materials To avoid failures, prevent accidents and save human life; To make a profit for the user To ensure customer satisfaction and maintain the manufacturer's reputation To aid in better product design To control manufacturing processes To lower manufacturing costs To maintain uniform quality level
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Area of Application
Mechanical Engineering Aerospace Engineering Civil Engineering Electrical Engineering Industrial & Manufacturing Engineering Systems Engineering Medicine Forensics Art
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