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Failure Analysis of a Copper Tube for Pneumatic System

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Abstract

Deoxidized-high-phosphorous (DHP) copper tubes are widely and successfully used in different applications as: water distribution, air-conditioning, solar heating, fuel, oil, and natural gas services and compressed air systems. In the present analysis, a failure of a copper tube composing a pneumatic system of a subway train was investigated by means of on-site examination, metallographic and fracture analyses. Results show that arcs coming from an exposed power cable lead to partial melting of a section of the tube, resulting in loss of pressure and interruption of the train.

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Authors and Affiliations

  1. PEMM/COPPE-Federal University of Rio de Janeiro, Rio de Janeiro, Brazil

    L. S. Araujo & L. H. de Almeida

  2. MetroRio, Rio de Janeiro, Brazil

    D. A. Pereira

Authors
  1. L. S. Araujo
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  2. L. H. de Almeida
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  3. D. A. Pereira
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Correspondence to L. S. Araujo.

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Araujo, L.S., de Almeida, L.H. & Pereira, D.A. Failure Analysis of a Copper Tube for Pneumatic System. J Fail. Anal. and Preven. 13, 202–206 (2013). https://doi.org/10.1007/s11668-013-9657-6

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  • DOI: https://doi.org/10.1007/s11668-013-9657-6

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