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Journal of Failure Analysis and Prevention

, Volume 7, Issue 6, pp 393–399 | Cite as

Corrosion Failure of a 30-Ton Tripod Jack

  • N. Ejaz
  • I. N. Qureshi
  • I. Salam
Case History
  • 66 Downloads

Abstract

A failure investigation of the four most suspected members in the assembly of a 30 ton tripod jack was carried out. It was found that under the combined effect of corrosion and high stresses, crack(s) were generated in the weld region of the leg extension. The crack(s) propagated under the corrosion and repeated loading until it reached a threshold size and the tripod jack collapsed. The problem initiated due to corrosion. Failure of the other members of the tripod jack, that is, spacer, brace, and bolts were the result of subsequent damage after (during) failure of the leg extension.

Keywords

AISI 4130 Weld failure Corrosion 

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Copyright information

© ASM International 2007

Authors and Affiliations

  1. 1.Metallurgy DivisionKRLRawalpindiPakistan

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