SEDL / STP / STP1231-EB / STP13947S

Procedure for Automated Tests of Fatigue Crack Propagation

Bachmann, V
Senior research engineer, branch head, and electronic specialist, DLR-German Aerospace Research Establishment, Institute for Materials Research, Cologne,

Marci, G
Senior research engineer, branch head, and electronic specialist, DLR-German Aerospace Research Establishment, Institute for Materials Research, Cologne,

Sengebusch, P
Senior research engineer, branch head, and electronic specialist, DLR-German Aerospace Research Establishment, Institute for Materials Research, Cologne,

Pages: 18    Published: Jan 1994

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Source: STP1231-EB

Abstract

This paper describes a computer program and its periphery that allows the determination of da/dN - ΔK curves: fatigue crack propagation threshold, ΔK^th: and the crack opening stress intensity factor, K^op. The main requirement on the computer program is that no a priori knowledge about the material or the test procedure is required of the operating personnel.

Keywords:
fatigue crack propagation, test automation, da/dN, -curve, fatigue crack propagation threshold, crack opening stress intensity factor, fracture (materials), fatigue (materials), testing methods, data analysis

Paper ID: STP13947S
Committee/Subcommittee: E08.05
DOI: 10.1520/STP13947S
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