One of the most reliable of methods for detecting defects, which are near surface or outcrop to the surface, is magnetic particle inspection.
The advantage of this type of test is its simplicity making it a very cost effective and efficient method of testing ferromagnetic components for defective areas.
Inspections can be carried out on-site with the aid of permanent magnets and electro magnets or in our laboratory using our current flow / magnetic flow fixed bench units.
The detecting medium may be either a dry powder or a liquid containing black or fluorescent indicators to provide a strong contrast to the surrounding material.
Typical applications
Surface cracks in welded assemblies
Heat Treatment cracks in components
Fine defects in the surface of castings for use in aerospace, automotive, oil & gas and medical industries.
Fatigue cracks that have developed in service
Fatigue cracks in chains and lifting gear.
Equipment available
Electromagnetic Yokes
Prod Type Equipments
Magnetic Particle Bench Type units
De-magnetizing coils
Ultraviolet Light Assemblies for Fluorescent Examination
Liquid Penetrant Testing (PT / DPT)
Also called as Dye Penetrant Testing (DPT/ DPI), the penetrant testing method is a development of the original oil and whiting method that has been used for many years in the detection of defects which outcrop at the surface of a component.
It can be utilized for both ferrous and non-ferrous materials but is particularly useful when components manufactured from non-ferrous materials and austenitic steels are to be examined and the more discriminating magnetic particle test cannot be employed.
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It can be used either in a laboratory application or on site.
The detecting medium may be either a red dye that is visible under normal lighting conditions or a fluorescent dye which requires the use of an ultraviolet lamp.
It is particularly useful in the laboratory as a cost effective method of testing small machined components in large batch quantities.
Typical Applications
The detection of outcropping defects in ferrous, non-ferrous castings, forgings and fabrications for use in aerospace, automotive, oil & gas and medical industries.
Fatigue cracks that have developed in service'
Fatigue cracks in chains and lifting gear.
Riveted seams for the detection of leaks.
Equipment available
Liquid Penetrant Materials
Ultraviolet Light Assemblies for Fluorescent Examination
Radiographic Testing (RT)
This is probably the best known and most widely used method of non-destructive testing. Developed over the course of many years, radiography provides a reliable method of detecting flaws in a wide range of product types including welds, castings, structures and composites.
It is employed predominantly in the fabricating and casting industries for quality control, and will reveal defects such as porosity, inclusions and cracks.
Radiography is a very adaptable method of testing and can be used both in our laboratory facilities and on-site.
Typical applications:
>> Welds in pressure vessels, pipelines and structures
>> Castings in the ‘as cast’ or machined condition
>> Many more Engineering Components
Equipment available
Radiographic Film Illuminators
Accessories for Film Interpretation
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