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Titolo:
EFFECTS OF SEQUENTIAL CYCLIC AND MONOTONIC LOADINGS ON DAMAGE ACCUMULATION IN NICKEL-270
Autore:
HARVEY DP; BONENBERGER RJ; WOLLA JM;
Indirizzi:
USN,RES LAB,MECH MAT BRANCH WASHINGTON DC 20375 FM TECHNOL INC FAIRFAX VA 22032 USN,RES LAB,PHYS MET BRANCH WASHINGTON DC 20375
Titolo Testata:
International journal of fatigue
fascicolo: 4, volume: 20, anno: 1998,
pagine: 291 - 300
SICI:
0142-1123(1998)20:4<291:EOSCAM>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
FATIGUE BEHAVIOR; STAINLESS-STEEL; ENERGY; METALS; STRESS;
Keywords:
PRECYCLING; PRESTRAIN; DAMAGE ACCUMULATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
D.P. Harvey et al., "EFFECTS OF SEQUENTIAL CYCLIC AND MONOTONIC LOADINGS ON DAMAGE ACCUMULATION IN NICKEL-270", International journal of fatigue, 20(4), 1998, pp. 291-300

Abstract

Specimens of polycrystalline nickel 270 were tested by subjecting them to loading paths of either (1) monotonic prestrain followed by strain controlled cyclic loading to failure or (2) strain controlled precycling followed by monotonic loading to failure. The effects of initial condition as produced by cold working or annealing, cyclic strain range, frequency and degree of monotonic prestrain on subsequent fatigue behavior were investigated. The effects of precycling on the subsequentmonotonic tensile behavior of the test material were also studied. The heat dissipated from the specimens under fatigue loading was measured. It was found that 76.6% of the irreversible work was dissipated as heat; the remaining portion caused material damage. The relative effects of monotonic prestrain on subsequent cyclic behavior were more harmful than the effects of precycling on subsequent monotonic behavior. The results showed that the energy absorbed by the material, which corresponds to damage, is a function of various loading parameters and is therefore path dependent under these conditions. (C) 1998 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 09:48:38