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ASM Failure Analysis Case Histories

Handbook of Case Histories in Failure Analysis

Edited by
Khlefa A. Esaklul
Khlefa A. Esaklul
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ASM International
Volume
2
ISBN electronic:
978-1-62708-215-0
Publication date:
1993
Book Chapter

Failure of a Copper Condenser Dashpot

By
Rakesh Kaul
Rakesh Kaul
Indira Gandhi Centre for Atomic Research
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;
N.G. Muralidharan
N.G. Muralidharan
Indira Gandhi Centre for Atomic Research
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;
N. Raghu
N. Raghu
Indira Gandhi Centre for Atomic Research
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;
K.V. Kasiviswanathan
K.V. Kasiviswanathan
Indira Gandhi Centre for Atomic Research
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;
Baldev Raj
Baldev Raj
Indira Gandhi Centre for Atomic Research
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Published:
1993
Page range:
99 - 106

Abstract

A copper condenser dashpot in a refrigeration plant failed prematurely. The dashpot was a long tubular component with a cup brazed at each end. Stereomicroscopic examination of the fracture surface at low magnification revealed a typical ductile mode of failure. The failure was attributed to insufficient component thickness, which made the dashpot unable to withstand internal operating pressure, and to extensive annealing in the heat-affected zones of the brazed joints. It was recommended that the condenser dashpot design take into account the annealing effects of brazing. Hydrostatic testing at a pressure times greater than the maximum operating pressure prior to placing the component in service was also suggested.

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Rakesh Kaul, N.G. Muralidharan, N. Raghu, K.V. Kasiviswanathan, Baldev Raj, 1993. "Failure of a Copper Condenser Dashpot", Handbook of Case Histories in Failure Analysis, Khlefa A. Esaklul

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