Abstract:
Thiswork aimsandexplaining scientifically that Non- destructive testing
plays an important role in the quality control ofa product. It is used
during all the stages of manufacturing of theproducts. It decreases the
cost of the product by reducing scrap and conservingmaterials,labor
and energy. NDT is used for detecting the leakage in pipelines for oil
and natural gas, oil tankers, aero planes, aero space, measuring the
thickness of steel and alloys. The methods of NDT range from the
simple to the complicated. The visual inspection is used for
surfaceimperfections, liquid penetrate testing can be used for detection
of open-to– surface discontinuities in anon-porous material. Magnetic
particle testing is used for materials which can be easily magnetized ,
eddy current testing is widely used to detect surface flaws and to
measure thin walls from one surface only.Radiographic testing is used
for the detection of internal leakages in many different material using
x-rays or gamma rays .The leakages ultrasonic testing which has a
superior penetrating power than radiographic testing and can detect
leakage deep in the test specimen in range of 6 to 7 meters of steel . It
is quite sensitive to small leakages and allows the precise
determination of the location and size of the defects. Ultrasonic testing
Peaceful technique NDT detection .
