Root Cause Forensic Investigation of Forklift Accident

SEM Image of Fractured Forklift Cable

Forensic investigation - failed forklift parking brake cableFailed forklift brake cable at 20x magnificationFailed forklift parking brake cable at 150x magnification

An Expert Witness / Root Cause Forensic Investigation of a Forklift Accident, which Resulted in Serious Injuries.

Metallurgical and chemical evaluations were performed on the forklift’s parking brake wire cable. The results determined that the cable had failed in fatigue, which initiated in two locations along its length. Fatigue is the progressive failure of a components subjected to repeated or fluctuating stresses below the yield strength of the material. These locations were likely where the cable passed over sheaths or pins.

The left image above shows 9x at the cable fracture. The image in the center is at 20x showing some of the broken cable wire fracture profiles. The image on the right is at 150x showing an indentation in one of the broken cable wires.


O’Donnell Consulting Performs Forensic Investigations on Equipment including Rack Structures, Ductwork, Lift Trucks and Forklifts. Our Expert Witness Testimony is Based on Comprehensive, Quantifiable Results.

(412) 835-5007

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