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Weld Failure on Concrete Pumping Truck

Metallurgical failure analysis was requested on a failed piece of construction equipment.  A leveling outrigger arm attached to a concrete pumping truck cracked through a weld resulting in an accident.  Metallurgical testing of the weld and surrounding metal was conducted.  A design analysis was also conducted on the stabilizing outrigger arm.  In addition to macro and microscopic examination, metallurgical testing determined that the cause of the cracking and failure of the outrigger was metal fatigue.  The properties of the weld and surrounding metal were satisfactory.  As a result of Finite Element Analysis (FEA) of the failed weld, it was determined that the cause of the accident was faulty design and a lack of proper inspection and maintenance.

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J.E.I. Metallurgical, Inc.

5514 Harbor Town
Dallas, Texas 75287

Phone: (972) 934-0493
Fax: (469) 737-3938
Email: r.c.jerner@metallurgist.com

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