RESIDUAL STRESS EVALUATION OF HMCS ONONDAGA PRESSURE HULL WELDMENTS

Authors
  1. Porter, J.F.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
In the development of defect condemnation criteria in submarine pressure hull weldments, designers in the past have assumed tensile residual stress levels approaching and in some cases surpassing the yield strength in multipass weldments. In order to correctly understand the role of these weldment defects on fatigue life and vulnerability to explosive attack, it is necessary to have a clearer picture of the levels and distributions of residual stresses in the pressure hull. It was to this end that a residual stress survey was carried out on the circumferential butt welds of HMCS ONONDAGA during her mid-life refit. The survey was carried out using the blind hold drilling technique at ten locations on the pressure hull. The survey demonstrated that the level of welding residual stresses was considerably lower than previously assumed.
Report Number
DREA-TC-87-309-SES-3-PAP-1 — @Paper presented at the Canadian Forces/CRAD Meeting, Dartmouth, 28-29 May 1987; CONTAINED IN 88-02311
Date of publication
01 Jan 1985
Number of Pages
30
DSTKIM No
88-02301
CANDIS No
55525
Format(s):
Microfiche filmed at DSIS;Originator's fiche received by DSIS

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