Interlaboratory comparison or proficiency testing in destructive testing of welded joints

Tallinec

Starting to get Involved
#1
Our lab performs destructive testing (fracture test) of welded joints according EN ISO 9017:2018 „Destructive tests on welds in metallic materials — Fracture test”.

Please give your idea how the requirement of ISO 17025 about interlaboratory comparison or proficiency testing can be fulfilled in my case. I could not find welded joints references and welded joints do not have homogenius structure.
 
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Tallinec

Starting to get Involved
#3
Here is an example of how this problem is being addressed in Europe:

Steel proficiency testing program

And ASTM sells a Special Technical Publication on the matter:

Statistical Design and Analysis of an Interlaboratory Program on the Fatigue Properties of Welded Joints in Structural Steels

Please let us know if this helps.
Thanks for the links.

In "Steel proficiency testing program" from Compalab I have found info (in "General Information"), that they perform "interlaboratory comparisons on welded joints". But in their Schedule 2020 are not in available interlaboratory comparisons for fracture test of welded joints according EN ISO 9017.

In regard to "Statistical Design and Analysis of an Interlaboratory Program on the Fatigue Properties of Welded Joints in Structural Steels", I shall try hunting this publication dated 1981.
 
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