Non-Destructive Testing
"CWI Services operates in accordance with The American Society for Nondestructive Testing (ASNT), Recommended Practice No. SNT-TC-1A"
VISUAL TESTING
Visual Testing is a method of non-destructive testing, where the object is inspected through the naked eye, magnifying glass, drone, or boroscope. It is the first NDT method, that is used on any object to inspect. It gives a visual clarification about the object and gives a quick observation result.
MAGNETIC PARTICLE TESTING
Magnetic Particle testing is cheaper compared to PT but is only limited to ferromagnetic materials such as carbon steel, low alloy steel, and nickel alloys. Furthermore, it is a practical way of testing fillet welds in steel construction. The test can detect only surface and limited sub-surface discontinuities in the material due to the limited penetrating power of the magnetic field that is induced in the material during testing.
LIQUID PENETRANT TESTING
Liquid Penetrant testing is a non-destructive test method that does not harm the samples or parts being inspected. The test is very effective in detecting porosity, cracks, fractures, laps, seams and other flaws that are open to the surface of the test piece and may be caused by fatigue, impact, quenching, machining, grinding, forging, bursts, shrinkage or overload. As a result, it is often used on lots of machined parts, as well as weldments, manufactured products, castings, forgings, and other items that will be placed into service. Liquid penetrant inspection can be used successfully on nonporous and fairly smooth materials such as metals, glass, plastics, and fired ceramics.
ULTRASONIC TESTING
Ultrasonic Testing techniques are based on the propagation of ultrasonic waves in the object or material tested. In most common UT applications, very short ultrasonic pulse waves with center frequencies ranging from 0.1-15 MHz, and occasionally up to 50 MHz, are transmitted into materials to detect internal flaws or to characterize materials. A common example is ultrasonic thickness measurement, which tests the thickness of the test object, for example, to monitor pipework corrosion. Ultrasonic testing is often performed on steel and other metals and alloys, though it can also be used on concrete, wood, and composites, albeit with less resolution. It is used in many industries including steel and aluminum construction, metallurgy, manufacturing, aerospace, automotive, and other transportation sectors.