• First NDT Training Institute in Pondicherry

    SHRI SAI INSTITUTE OF NON-DESTRUCTIVE TESTING & INSPECTION SERVICES is a leading training institute for ASNT level I & level II . We offer a course which provides 100% job opportunities in India and abroad with attractive salary and high reputation.

  • Testing Methods

    WE offer courses on ASNT Level I and Level II in Radiographic Testing,Ultrasonic Testing,Visual Testing,Magnetic Particle Testing,Liquid Penetrant Testing,Radiographic Film Interpretation and also we provide Free courses on Welding Inspection & Training ,Quality Practice and Leak Testing

  • Opportunity

    We offer Placement in Oil & Gas, Automobile, Aeronautical, Pre-Engineering, Shipbuilding,

 
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About Radiographic Testing

The radiographic testing method is used for the detection of internal flaws in many different materials and configurations. An appropriate radiographic film is placed behind the test specimen and is exposed by passing either X rays or gamma rays (Co-60 & Ir-192 radioisotopes) through it. The intensity of the X rays or gamma rays while passing through the product is modified according to the internal structure of the specimen and thus the exposed film, after processing, reveals the shadow picture, known as a radiograph, of the product. It is then interpreted to obtain data about the flaws present in the specimen. This method is used on wide variety of products such as forgings, castings and weldments. Some of the advantages of radiographic testing include:


(1) It can be used to inspect large areas at one time.

(2) It is useful on wide variety of materials.

(3) It can be used for checking internal malstructure, misassembly or misalignment.

(4) It provides permanent record.

(5) No calibration needed on the job site.

(6) Devices for checking the quality of radiograph are available.

(7) Interpretation of radiographs can be done in comfortable conditions.