Failure Investigation
Most corrosion and related failure investigations are undertaken in the laboratory, because of the metallographic, testing and analytical input that this work usually requires. On-site failure investigation work includes sampling and assimilation of information. In the laboratory this is extended to include:- photography to record the appearance of the samples.
- micro analysis of corrosion products by means of wet chemistry techniques, X-ray diffraction, electron microprobe and energy dispersive X-ray analysis in the scanning electron microscope.
- bulk analysis of materials by means of optical spark emission, combustion and induction-coupled plasma instruments.
- mechanical testing to establish conformance with supply requirements.
- non-destructive examination for cracks and material defects, using dye penetrant inspection, magnetic crack detection and ultrasonic techniques.
- metallurgical examination of sections taken from the failure, using optical and electron optical techniques.
Our experience in such work enables us to establish the mechanism of failure and prepare a comprehensive report for the customer. If expert witness statements are required for litigation or insurance purposes, our senior staff provide these. We can then work with the customer to design an appropriate corrosion control strategy to prevent recurrence of the problem.
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