ACCEPTANCE LEVELS OF WELD DEFECTS FOR FATIGUE SERVICE

This paper has attempted to show how rationally based acceptance standards for weld defects operating under fatigue loading conditions have been derived, based on information gathered together from research carried out worldwide. Based on this information, a Drait British Standard on the derivation of acceptance levels of weld defects has now been written. The validity of the concept of defect acceptance based on fitness for purpose has been confirmed in a recent investigation of defective joints operating in the low cycle regime and at elevated temperatures. Methods of adjusting the quality band system to account for defects operating in aggressive environments have been proposed. One point should be made clear to those who regard the defect levels given in the acceptance proposals and in this paper as being totally unacceptable because they seem to indicate a reduction in quality. Welding costs will escalate as NDT of unsophisticated structures becomes more widespread because more and more unnecessary repairs will be made. In operating a business for profit, fitness for purpose is surely a more logical axiom than quality regardless of cost.

  • Availability:
  • Supplemental Notes:
    • Paper presented at the AWS 57th Annual meeting held in St. Louis, Missouri, during May 10-14, 1976.
  • Corporate Authors:

    American Welding Society

    2501 NW 7th Street
    Miami, FL  USA  33125
  • Authors:
    • Boulton, C F
  • Publication Date: 1977-1

Media Info

  • Features: References;
  • Pagination: p. 135-225
  • Serial:
    • Welding Journal
    • Volume: 56
    • Issue Number: 1
    • Publisher: American Welding Society
    • ISSN: 0043-2296

Subject/Index Terms

Filing Info

  • Accession Number: 00148493
  • Record Type: Publication
  • Source Agency: American Welding Society
  • Files: TRIS
  • Created Date: Feb 23 1977 12:00AM