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Non-Destructive Testing Methods
The following methods are used by West Penn Testing Group to conduct non-destructive testing. Click on any of the terms below to learn more about a particular type of testing:
- Ultrasonic Inspection (UT)
- A method of inspection, where sound waves are passed thru a material and reflections are detected from internal non-homogenous areas.
- Immersion Ultrasonic
- A more sensitive method, where the test material is submerged in water and the material is turned or rotated past a test probe, while placed on a turntable or bar rotator.
- Contact Ultrasonic
- A method where the test probe is directly coupled to the object under test, and moved manually over the part.
- C-Scan Presentation – Ultrasonic - for Panels, Bar, Pipe, Forgings and Brazed Components
- A method by which the ultrasonic information is used to produce an image much like an X-ray for the location of internal defects, resulting in a permanent record that can be saved and re-evaluated at any time.
- Fluorescent & Visible Penetrant Inspection (PT)
- A method for detection of surface defects such as cracks and laps as well as pits. A fluid with unique properties is applied to the test piece, subsequently removed and then followed by a developing material which highlights any remnant fluid trapped in surface discontinuities.
Visible Dye - A liquid usually red that has the ability to easily absorb into surface defects is applied to the part under test, after a cleaning stage, residual material is drawn out with a white developer powder, defects are then visible.
Fluorescent Dye - A solution containing fluorescent properties is used as in visible dye, but viewed under black light, this results in a more sensitive test, capable of detecting smaller defects.
- Magnetic Particle Inspection (MT) - Wet & Dry
- A non-destructive test method used to detect surface and near-surface discontinuities in ferromagnetic material. A magnetic field is induced in a test piece and iron filings are applied. These filings will collect around anomalies in the magnetic field producing a visible area of possible defects.
Dry - An inspection technique where ferromagnetic (iron based) materials are magnetized and dyed iron filings are broadcasted over the material under test, breaks in the surface (cracks, seams) act as magnetic poles attracting the iron filings outlying the defects for detection.
Wet - In the wet method the same magnetizing principal is utilized, but the particles are dyed with a fluorescent coating and suspended in a liquid. The liquid flows over the part and the particles are attracted as in the dry method and viewed under ultraviolet light, this results in a more sensitive test.
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Equipment
West Penn Testing Group maintains and operates the following non-destructive testing equipment in our facilities:
- (6) Five-axis forging tanks with up to 42" diameter and 1,000 lb. capacity
- (4) multi-channel billet tanks up to 18" diameter, 32 ft. in length and with a 10,000 lb. capacity
- (4) Four-channel Tac-Tic inspection systems up to 5.5" diameter and 25 ft. length
- (2) Plate inspection tanks up to 62" wide x 32 ft. long and 20,000 lb. capacity
- (1) 6000 amp wet horizontal magnetic particle bench
- (2) 32" diameter Fluorescent penetrant
Non-Destructive Testing Services
West Penn Testing Group offers clients a broad array of testing and evaluation protocols. Our state-of-the-art equipment is accommodate both large and small samples. Our organization is NADCAP ISO 2001. We also maintain compliance with an extensive array of client and industry codes and specifications.
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Headquarters
West Penn Testing Group
1010 Industrial Blvd.
New Kensington, PA 15068
724.334.1900 (phone)
724.334.9785 (fax)
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