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 is a destructive method of assessing critical weld parameters, usually employed at the weld design stage.
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.
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.
Testing is part of our welding process quality evaluation and is not offered as a stand-alone service.