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Failure of a Sliding Metal Gate Due to Single-Impact Bending Fracture and Poor Installation Practice

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Abstract

This work looks into the failure of a sliding metal gate and the current practice for installing such sliding gates. The root cause of the failure was fracture of an L-shaped stopper that is very commonly used in sliding metal gates. Although fatigue associated with repeated impacts due to gate opening and closing operations are often blamed for failure of L-shaped stoppers, single-impact bending fracture was implicated in the present case. Besides L-shaped stoppers, it is a common practice to install a small metal stopper in the floor track to prevent gate overrunning. The suitability of installing such stoppers in floor track is questioned in the present study.

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Authors and Affiliations

  1. Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China

    J. K. L. Lai & K. W. Wong

  2. Department of Electromechanical Engineering, University of Macau, Macau, China

    K. H. Lo

Authors
  1. J. K. L. Lai
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  2. K. H. Lo
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  3. K. W. Wong
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Correspondence to K. H. Lo.

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Lai, J.K.L., Lo, K.H. & Wong, K.W. Failure of a Sliding Metal Gate Due to Single-Impact Bending Fracture and Poor Installation Practice. J Fail. Anal. and Preven. 11, 71–76 (2011). https://doi.org/10.1007/s11668-010-9411-2

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  • DOI: https://doi.org/10.1007/s11668-010-9411-2

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