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    Description

    High-speed chains or rotating disks are commonly used to cut and process trees during forest harvesting operations. Mechanical failure or fatigue of these tools can lead to a potentially hazardous situation where fragments of chain or sawteeth are thrown through the operator enclosures on forest machines. This poster presentation discusses the development and validation of a facility to conduct thrown object tests for windows and doors used in operator protecttive structures on forest machines. The testing facility consists of a highpressure pneumatic laUOch system that propels sawteeth and chain fragments at velocities in excess of 150 m/ s.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Taylor, S.E.; Veal, M.W.; Rummer, R.B. 2003. Thrown object testing of forest machine operator protective structures. In: 2nd Forest Engineering Conference 4p.

    Keywords

    Operator Protective Structure, thrown object, forest machine

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https://www.fs.usda.gov/treesearch/pubs/33466