Non-destructive testing (NDT) evaluates materials, components, or systems without damage. Because NDT does not permanently alter the item under test, it saves time and cost in evaluation, troubleshooting, and research. Two widely used methods are Liquid Penetrant Testing (for many non-magnetic metals and some nonmetallics) and Magnetic Particle Inspection (for ferrous materials). In penetrant testing, visible or fluorescent dyes reveal surface-breaking flaws. In magnetic particle testing, fine iron particles applied while the part is magnetized collect at leakage fields, indicating surface and some sub-surface discontinuities.
Non-Destructive Testing Properties
Heliponents provides Magnetic Particle and Fluorescent Penetrant testing onsite, performed by certified NDT inspectors and audited regularly by NADCAP.
Also known as Dye Penetrant Inspection (DPI), Liquid Penetrant Inspection (LPI), Penetrant Testing (PT), and Fluorescent Testing. LPT is simple and highly sensitive to very fine surface discontinuities. It is fast, portable, cost-effective, produces visible indications, and suits large or complex shapes. A colored or fluorescent penetrant is drawn into surface defects by capillary action, then developed and viewed under appropriate light. Heliponents offers economical LPT with quick turnaround.
An extremely sensitive method for ferrous materials that detects minute surface cracks and some subsurface discontinuities. The part is magnetized and a carrier fluid with ferromagnetic particles is applied; field distortions at defects attract particles to form clear indications. MPI is an economical, rapid way to assess service readiness of ferrous parts.