Testing and Analysis

Carrs are able to offer customers a wide variety of testing methods, depending on the application involved, the operating environment, and the gravity attached to different potential failure modes.

Micro Analysis

Micro analysis is a destructive method of assessing critical weld parameters, usually employed at the weld design stage.

Crack Testing

Cracks in welds are unacceptable in all events; a tiny crack in time may propagate so we need to test, locate and re-work or reject. Carrs detect cracks utilising the following methods:

Macro Analysis/Cross Sectioning – Destructive method of assessing the whole weld in profile to identify cracks, porosity, linear shrinkage and unwelded joints.

Dye Penetrant – Non-destructive and economical method of locating surface cracks and pores.

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Leak Testing

If a product is designed not to leak air or fluid, it is important to test, locate any faults and re-work or reject. Carrs are well equipped to test for both gross and fine leaks.

Gross Leak Testing

Pressure Testing – Non-destructive testing of an assembly with air by pressurising in water or other non-conductive liquid.

Vacuum Testing – Non-destructive test by evacuating an assembly and reading the leak rate.

Fine Leak Testing

Helium Testing – Similar to vacuum testing, but helium gas is introduced either inside or outside the assembly for detection of fine or tiny leaks.

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Testing is part of our welding process quality evaluation and is not offered as a stand-alone service.