Archive for the “Machinery” Category


ANALYSIS OF A CRACKED SPLINE GEAR

Posted on April 6th, 2016 by Met-Tech

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ANALYSIS OF A CRACKED SPLINED COUPLING Summary: A fractured splined coupling was received for analysis to investigate the cause of failure. Results indicated the coupling fractured in fatigue, initiated at the bottom corner of the keyway from the ID of the coupling. The keyway exhibited significant yielding which widened the keyway, indicating the strength of […]


Cracked Nitrided Tool Steel Die Plate

Posted on September 27th, 2018 by Met-Tech

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  Failure Analysis of Fractured Tool Steel Die Plate Summary: A cracked polymer filament die plate was received for analysis to determine the cause of cracking. Results indicate the die plate cracked as a result of a brittle nitrided case and an insufficient cross-sectional area of the narrow ligament between the cap screw hole and […]

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Failure Anaysis Of Ball Bearings

Posted on April 6th, 2016 by Met-Tech

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Failure Analysis of Arcing and Contact Fatigue of Ball Bearings Summary: The four seized bearings submitted for metallurgical analysis were determined to have suffered deterioration of their grease to the point that it was inhibiting motion rather than enabling. The grease had turned to a thick (viscous) black sludge that was full of particulate. Electrical […]

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Failure Analysis Services

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Corrosion Investigation

Determine cause of material degradation that reduces life expectancy.

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SEM/EDS
Micro-Analysis

Verify fracture mechanism & initiation. Microstructure composition and imaging.

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Metallography Services

Reveals grain structure, thermo mechanical processing & flaw and defect characteristics.

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