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prEN 3873

Aerospace series - Test methods for metallic materials - Determination of fatigue crack growth rates using Corner-Cracked (CC) test pieces prEN 3873

Publication date:   Nov 13, 2025

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40.60   Close of voting   Feb 5, 2026

CEN

ASD-STAN Aerospace

European Norm

49.025.15   Non-ferrous alloys in general

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This document specifies the requirements for determining fatigue crack growth rates using corner-crack (CC) test pieces. Crack development is measured using a potential-drop system, and the calculated crack depths can be corrected via marker bands created on the fracture surface during the test. Results are expressed in terms of the crack-tip stress-intensity range (ΔK), with crack depths and test stress level noted.

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prEN 3873
40.60 Close of voting
Feb 5, 2026




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