Stress ratio effects on crack opening loads and crack growth rates in aluminum alloy 2024

William T. Riddell, Robert S. Piascik

Research output: Contribution to journalConference article

9 Citations (Scopus)

Abstract

The effects of stress ratio (R) and crack-opening behavior on fatigue crack growth rates (da/dN) for Aluminum Alloy (AA) 2024-T3 were studied using constant-ΔK testing, closure measurements, and fractography. Fatigue crack growth rates were obtained for a range of ΔK and stress ratios. Results show that constant ΔK fatigue crack growth for R ranging from near 0 to near 1 is divided into three regions: Region I where R is low, Region II where R is intermediate, and Region III where R is high.

Original languageEnglish (US)
Pages (from-to)407-425
Number of pages19
JournalASTM Special Technical Publication
Issue number1332
StatePublished - Jan 1 1999
EventProceedings of the 1997 29th National Symposium on Fatigue and Fracture Mechanics - Stanford, CA, USA
Duration: Jun 24 1997Jun 26 1997

Fingerprint

Fatigue crack propagation
Aluminum alloys
Crack propagation
Loads (forces)
Cracks
Fractography
Testing

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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Stress ratio effects on crack opening loads and crack growth rates in aluminum alloy 2024. / Riddell, William T.; Piascik, Robert S.

In: ASTM Special Technical Publication, No. 1332, 01.01.1999, p. 407-425.

Research output: Contribution to journalConference article

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AU - Piascik, Robert S.

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N2 - The effects of stress ratio (R) and crack-opening behavior on fatigue crack growth rates (da/dN) for Aluminum Alloy (AA) 2024-T3 were studied using constant-ΔK testing, closure measurements, and fractography. Fatigue crack growth rates were obtained for a range of ΔK and stress ratios. Results show that constant ΔK fatigue crack growth for R ranging from near 0 to near 1 is divided into three regions: Region I where R is low, Region II where R is intermediate, and Region III where R is high.

AB - The effects of stress ratio (R) and crack-opening behavior on fatigue crack growth rates (da/dN) for Aluminum Alloy (AA) 2024-T3 were studied using constant-ΔK testing, closure measurements, and fractography. Fatigue crack growth rates were obtained for a range of ΔK and stress ratios. Results show that constant ΔK fatigue crack growth for R ranging from near 0 to near 1 is divided into three regions: Region I where R is low, Region II where R is intermediate, and Region III where R is high.

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