Hydraulically Expanded Tube-to-Tubesheet Joints

[+] Author and Article Information
D. A. Scott, G. A. Wolgemuth, J. A. Aikin

Atomic Energy of Canada Ltd., Chalk River Nuclear Laboratories, Chalk River, Ontario, Canada

J. Pressure Vessel Technol 106(1), 104-109 (Feb 01, 1984) (6 pages) doi:10.1115/1.3264297 History: Received March 23, 1982; Revised November 28, 1983; Online November 05, 2009


To avoid stress corrosion cracking, a method of producing tube-to-tubesheet joints with low residual stresses was sought. Hydraulic expansion was found to be an acceptable method. In this paper, the experimental and theoretical work done to determine these stresses is presented. The area of interest is the transition region between the expanded and unexpanded sections of tubing. X-ray diffraction, stress corrosion cracking test and strain gaging were the prime measuring techniques used. Extensive use of finite element analysis was also made. In addition, the pull strength, length change, etc., of this type of joint were investigated.

Copyright © 1984 by ASME
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