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Chemical
Analysis
Expert
Testimony
Failure
Analysis
Health &
Beauty
Materials
Expertise
Mechanical
& Physical Testing
Microbiology
Microscopy
Packaging
Analysis
Patent
Infringement
Petroleum
Testing
Pipe Rehab
Plastic Piping
Systems
Polymers
& Plastics
Product
Expertise
Product
Liability
Technical
Equipment
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Failure Analysis
Hauser Laboratories
investigates product and material failures for clients in many fields,
including construction, manufacturing, government, insurance, and litigation.
Failure analysis requires the expert integration of information from many
sources. Our engineers, chemists, and microscopists use a vast array of
technical equipment to perform mechanical and physical testing, chemical
analysis, microscopy, and failure modeling and reconstruction.
In addition, Hauser Laboratories can provide expert testimony regarding our
failure analysis activities and conclusions.
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A client submitted
stainless steel bolts that had failed by fracture on chemical process
equipment. After optical microscopy, SEM and EDS evaluation, the most
probable cause was determined to be hydrogen embrittlement. The
images shown here clearly illustrate the facets of stainless steel grains
in the fracture surface, indicating that the metal failed along grain
boundaries (intergranular fracture mode). The sample in the first
image appears to have broken and remained in service in a corrosive environment
for some time because the stainless steel grains are pitted. The
sample in the second image appears to be a more recent fracture, because
the grains are unpitted.
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Steve Ferry, a Department Manager at Hauser Laboratories,
authored the cover article in the August 2002 issue of Plumbing Engineer
magazine. Click here to read the article.
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