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MISTRAS’ Penetrant Testing (PT) inspection services find surface-breaking discontinuities on relatively smooth, nonporous surfaces.
Penetrant Testing (PT) – also known as liquid penetrant inspection (LPI) or dye penetrant testing – is based on the properties of surface wetting and capillary action, which causes a liquid to rise when confined to a small opening. After applying the penetrant and wiping away the excess, the penetrant that rises to the surface can indicate surface-breaking anomalies.
MISTRAS' PT services are widely applicable to identify discontinuities in a variety of assets given its ease of use and minimal equipment requirements. Our technicians perform PT on assets in a variety of industries, with a wide range of shapes, sizes, and materials, including:
MISTRAS uses multiples forms of penetrant inspections to find defects in rolled products, castings, forgings, and welds:
Our certified PT inspection technicians select the penetrant method based on sensitivity levels, job and site conditions, and other variables.
Penetrant testing is a popular non-destructive testing (NDT) technique because of its low cost and flexibility.
In PT, assets do not have to be disassembled or removed from the facility for inspection, making the inspection process quick and efficient.
Traditional visual inspection (VT) can miss small defects that are not yet visible to the naked eye. However, even the smallest leaks, cracks, and other flaws can waste costly resources, adding up to huge losses for your facility.
PT identifies both visible and seemingly invisible discontinuities, giving you important information for repair and maintenance planning. Though not the most advanced NDT technique, PT inspection can be used as tool to identify the presence of defects that require more in-depth analysis and quantification.
MISTRAS uses penetrant testing to inspect:
The main advantages of penetrant testing include:
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