Standard Practice for Determination of Quasistatic Fracture Toughness of Welds

Importancia y uso:

5.1 This test practice provides a recommended procedure for preparing fracture toughness specimens from welds to improve the likelihood of obtaining useful fracture toughness values.

5.1.1 The subsequent fracture toughness values, that have significance and use as stated in the applicable ASTM test method, may allow for flaw tolerance assessments of welded structures. Flaw tolerance assessments require an understanding and compensation for the differences that may exist between laboratory test results and field conditions.

5.1.2 The shallow-notched specimen testing procedures described in Annex E of ISO 15653 may be used by agreement between the parties involved as long as it is understood that Annex E is “Informative” and the result is a geometry dependent measurement of toughness that is not validated by the applicable test standard.

Subcomité:

E08.07

Volúmen:

03.01

Número ICS:

25.160.40 (Welding joints and welds)

Palabras clave:

fracture toughness; heat affected zone; hydrogen release; overmatched; post-test metallography; residual stress; shallow-crack; SE(B); undermatched; welds;