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Titolo:
Damage mechanics for the fracture prediction of metal forming tools
Autore:
Lapovok, R; Smirnov, S; Shveykin, V;
Indirizzi:
CSIRO Mfg Sci & Technol, Ctr Met Forming & Related Technol, Melbourne, Vic3072, Australia CSIRO Mfg Sci & Technol Melbourne Vic Australia 3072 , Vic3072, Australia Russian Acad Sci, Inst Engn Sci, Ural Branch, Ekaterinburg 620219, Russia Russian Acad Sci Ekaterinburg Russia 620219 Ekaterinburg 620219, Russia Ural Tech Univ, Sverdlovsk 620002, Russia Ural Tech Univ Sverdlovsk Russia 620002 Univ, Sverdlovsk 620002, Russia
Titolo Testata:
INTERNATIONAL JOURNAL OF FRACTURE
fascicolo: 2, volume: 103, anno: 2000,
pagine: 111 - 126
SICI:
0376-9429(200005)103:2<111:DMFTFP>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Keywords:
damage accumulation; ductility; ductile fracture; metal forming; tool life;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Lapovok, R CSIRO Mfg Sci & Technol, Ctr Met Forming & Related Technol, Melbourne, Vic3072, Australia CSIRO Mfg Sci & Technol Melbourne Vic Australia3072 Australia
Citazione:
R. Lapovok et al., "Damage mechanics for the fracture prediction of metal forming tools", INT J FRACT, 103(2), 2000, pp. 111-126

Abstract

In this paper, a damage mechanics approach is shown to be useful for the prediction of fatigue fracture in metal forming tools. The approach can be applied in the general situation of under complex loading at elevated temperature. A damage criterion used considers initiation and propagation of cracks and fracture to be the accumulation of damage up to certain critical levels. This criterion is based on ductile properties of material. These properties are determined by the dependence of critical local strain on stressesand temperature and by the dependence of intensity of damage accumulation on the same parameters. The testing equipment and test methods are described. The results of an investigation of H13 hot work steel are included. The capability of the method is demonstrated by the prediction of crack initiation in a 'disc-on-disc' experiment. This paper presents clear description of fatigue damage based on experiments.

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Documento generato il 01/12/20 alle ore 15:50:43