SEDL / STP / STP1231-EB / STP13970S

Advances in Hysteresis Loop Analysis and Interpretation by Low-Cycle Fatigue Test Computerization

Degallaix, G
Professor, assistant, doctoral candidate, and professor, Laboratoire de Mécanique de Lille, URA CNRS 1441, Ecole Centrale de Lille, Villeneuve d'Ascq,

Hottebart, P
Professor, assistant, doctoral candidate, and professor, Laboratoire de Mécanique de Lille, URA CNRS 1441, Ecole Centrale de Lille, Villeneuve d'Ascq,

Seddouki, A
Professor, assistant, doctoral candidate, and professor, Laboratoire de Mécanique de Lille, URA CNRS 1441, Ecole Centrale de Lille, Villeneuve d'Ascq,

Degallaix, S
Professor, assistant, doctoral candidate, and professor, Laboratoire de Mécanique de Lille, URA CNRS 1441, Ecole Centrale de Lille, Villeneuve d'Ascq,

Pages: 17    Published: Jan 1994

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Source: STP1231-EB

Abstract

Low-cycle fatigue test computerization offers new perspectives in the analysis and interpretation of test results. Test control and data acquisition with a microcomputer allow for increased versatility and accuracy in the evaluation of pertinent characteristic parameters. A specific software package, AICYFAP, has been developed. It provides from the acquired data files 43 parameters on each hysteresis stress-strain loop, including conventional parameters, elasticity and work-hardening parameters, and loop shape parameters. The software package has been used in low-cycle fatigue studies for two kinds of materials: AISI 316L-316LN austenitic stainless steels (energy approach) and a duplex stainless steel (continuous damage mechanics approach). The AICYFAP software package appears to be a complementary tool for a better understanding of low-cycle fatigue behaviors.

Keywords:
low-cycle fatigue, hysteresis loop, test computerization, numerical data processing, stainless steels, fatigue damage, test automation, fatigue (materials), fracture (materials), testing methods, data analysis

Paper ID: STP13970S
Committee/Subcommittee: E08.05
DOI: 10.1520/STP13970S
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