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Titolo:
Dynamic full field measurements of crack tip temperatures
Autore:
Guduru, PR; Zehnder, AT; Rosakis, AJ; Ravichandran, G;
Indirizzi:
CALTECH, Grad Aeronaut Labs, Pasadena, CA 91125 USA CALTECH Pasadena CA USA 91125 Grad Aeronaut Labs, Pasadena, CA 91125 USA Cornell Univ, Dept Theoret & Appl Mech, Ithaca, NY 14853 USA Cornell UnivIthaca NY USA 14853 heoret & Appl Mech, Ithaca, NY 14853 USA
Titolo Testata:
ENGINEERING FRACTURE MECHANICS
fascicolo: 14, volume: 68, anno: 2001,
pagine: 1535 - 1556
SICI:
0013-7944(200109)68:14<1535:DFFMOC>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOADED PRENOTCHED PLATES; PROPAGATING SHEAR BANDS; 3-POINT BEND SPECIMEN; FRACTURE INITIATION; NUMERICAL SIMULATIONS; FINITE-ELEMENT; STORED ENERGY; PLASTIC WORK; STEEL; METALS;
Keywords:
infrared temperature measurement; dynamic fracture; crack tip temperature; J integral;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Rosakis, AJ CALTECH, Grad Aeronaut Labs, Mail Stop 105-50, Pasadena, CA 91125 USA CALTECH Mail Stop 105-50 Pasadena CA USA 91125 a, CA 91125 USA
Citazione:
P.R. Guduru et al., "Dynamic full field measurements of crack tip temperatures", ENG FRACT M, 68(14), 2001, pp. 1535-1556

Abstract

This paper presents a detailed investigation of the evolution of temperature field at the tip of a stationary crack subjected to dynamic loading in two different types of steels. A high speed two-dimensional infrared camera was used to image the temperature fields at the crack tips. In a high strength maraging steel, the thermograms reveal the development of plastic zone and the process of crack initiation and propagation. In ductile HY100 steel, the thermograms are used to estimate the evolution of J integral and its critical value at crack initiation. The temperature images are also used toinvestigate the dominance of HRR field around the crack tip. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 27/10/20 alle ore 04:20:05