Engineering Calculation of Fracture Toughness of Materials with Chevron-Notched Specimens

Dettagli Bibliografici
Parent link:AIP Conference Proceedings
Vol. 1683 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures.— 2015.— [020039, 4 p.]
Ente Autore: Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Кафедра материаловедения в машиностроении (ММС)
Altri autori: Deryugin Ye. Yevgeny, Panin V. E. Viktor Evgenyevich, Suvorov B. Boris, Kibitkin V. Vladimir, Antipina N. A. Nataljya Alekseevna
Riassunto:Title screen
A new method of crack resistance of metal materials is given for small-sized chevron-notched specimens. Specific fracture energy (SFE) is offered to be the main characteristic of fracture toughness. A relation for notch edges opening [liambda][e] versus the applied external force, crack length and chevron angle was found theoretically. It makes it possible to evaluate variations of compliance of a specimen in the process of crack spreading without the “loading-unloading” regime. Unlike linear fracture mechanics, this technique does not require special conditions on the size of the plastic zone in the vicinity of the crack tip. It is shown that the measured displacement of the notch edges opening [liambda] contains the term [liambda][p], which relates to some plastic deformation of a specimen and does not depend on the crack growth. In general, [liambda]=[liambda][e]+[liambda][p].
Режим доступа: по договору с организацией-держателем ресурса
Lingua:inglese
Pubblicazione: 2015
Soggetti:
Accesso online:http://dx.doi.org/10.1063/1.4932729
Natura: Elettronico Capitolo di libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=644878

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330 |a A new method of crack resistance of metal materials is given for small-sized chevron-notched specimens. Specific fracture energy (SFE) is offered to be the main characteristic of fracture toughness. A relation for notch edges opening [liambda][e] versus the applied external force, crack length and chevron angle was found theoretically. It makes it possible to evaluate variations of compliance of a specimen in the process of crack spreading without the “loading-unloading” regime. Unlike linear fracture mechanics, this technique does not require special conditions on the size of the plastic zone in the vicinity of the crack tip. It is shown that the measured displacement of the notch edges opening [liambda] contains the term [liambda][p], which relates to some plastic deformation of a specimen and does not depend on the crack growth. In general, [liambda]=[liambda][e]+[liambda][p]. 
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701 1 |a Deryugin  |b Ye.  |g Yevgeny 
701 1 |a Panin  |b V. E.  |c Director of Russian materials science center  |c Research advisor of Institute of strength physics and materials science of Siberian branch of Russian Academy of Sciences  |f 1930-  |g Viktor Evgenyevich  |3 (RuTPU)RU\TPU\pers\26443 
701 1 |a Suvorov  |b B.  |g Boris 
701 1 |a Kibitkin  |b V.  |g Vladimir 
701 1 |a Antipina  |b N. A.  |c specialist in the field of engineering graphics and descriptive geometry  |c Associate Professor of Tomsk Polytechnic University, Candidate of technical sciences  |f 1972-  |g Nataljya Alekseevna  |3 (RuTPU)RU\TPU\pers\35817  |9 18962 
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