Infinity Quality Services LLP

Ultrasonic testing is a non-destructive method which uses high frequency and the shorter wavelength sound waves are introduced into the material being inspected. The sound waves travel through the material with some loss of energy (attenuation) due to material characteristics or are measured after reflection at interfaces (pulse echo) or flaws, or are measured at the opposite surface (through transmission). The reflected beam is detected and analyzed to define the presence and location of flaws, measurement of thickness.

APPLICATIONS:
Weld inspection – Boilers, Pressure vessels, Heat exchangers, structure, railway products, generators etc.
Forgings- Shafts, Valve bodies, bars, flanges, plates etc.
Castings- Valve bodies, turbine casings, pump bodies, pulleys, etc.
Wrought products- Rolled plates, bars, beams and sections
Pipe and tubes- Seamless, welded pipes, sheets used for welded pipes
In-service inspection

The radiographic testing uses high frequency and the shorter wavelength portion of electromagnetic radiation for the detection of internal flaws on many different materials and configurations. An appropriate radiographic film/ detector is placed behind the test specimen and is exposed by passing either X-Rays or gamma rays 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 of the internal structure of the product. This shadow picture, known as a radiograph, is then interpreted to obtain data about the flaws present in the specimen and evaluated as per applicable design code.

APPLICATIONS:
Weld inspection – Boilers, Pressure vessels, Heat exchangers, structure, railway products, generators etc.
Castings – Valve bodies, turbine casings, pump bodies, pulleys, etc.

This method can be used for the detection of open-to-surface discontinuities in any industrial product which is made from a non-porous material. Prior to penetrant testing, the surface to be inspected shall be clean and dry. Suitable penetrant is then applied to the test area and enter discontinuities open to the surface. After the appropriate penetration time has elapsed, the excess penetrant is removed from the surface and the developer applied. The developer absorbs the penetrant that has entered and remains in the discontinuities and may give a clearly visible enhanced indication of the discontinuity. Indications found are interpreted and evaluated as per applicable design code. Based upon sensitivity required various techniques can be ultilized viz. Color contrast, fluorescent, water
washable, post-emulsified, solvent removable.

Magnetic particle testing is used for the testing of materials which can be easily magnetized (Ferromagnetic). This method is capable of detecting flaws which are open-to-surface and just-beneath-the surface. Process involves the magnetizing the part either by using a permanent magnet, or an electromagnet or by-passing electric current through the specimen and the magnetic lines of forces are set in to the specimen. Whenever there is a flaw which interrupts the flow of magnetic lines of force, some of these lines must leave and re-enter the specimen. These points of leaving and re-entry form opposite magnetic poles. Whenever magnetic particles are sprinkled onto the surface of the specimen, these particles are attracted by these magnetic poles to create a visual indication approximating the size and shape of the flaw. Indications found are interpreted and evaluated as per applicable design code.

APPLICATIONS:
Weld inspection – Boilers, Pressure vessels, Heat exchangers, structure, railway products, generators etc.
Forgings- Shafts, Valve bodies, bars, flanges, plates etc.
Castings- Valve bodies, turbine casings, pump bodies, pulleys, etc.
Wrought products- Rolled plates, bars, beams and sections
Pipe and tubes- Seamless, welded pipes, sheets used for welded pipes
Inservice inspection

Visual Inspection is monitoring of specific parameters viz, roughness, dimensions, surface discontinuities by visual and optical assessment of test object and surfaces using the visible portion of electromagnetic spectrum. Inspection may be by use of eye alone or can be enhanced using optical systems such as magnifiers, mirrors, borescope, fiberscope. Indications found are interpreted and evaluated as per applicable design code

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