Fracture toughness of materials at the presence of plastic deformation

• Autorzy: Neimitz, A.

Warianty tytułu

PL

odporność na pękanie materiałów przy obecności odkształceń plastycznych

• Konferencja: Scientific Seminar Integrated Study on the Foundations of Plastic Deformation of Metals PLASTMET'06 (5; 28.11-01.12.2006; Łańcut, Poland)
• Języki publikacji: EN

Abstrakty

EN

In this paper the problem of fracture toughness is reanalyzed. It is shown that fracture toughness is not a material property. It depends on a shape and size of structural elements. The measures of in- and out-of-plane constraint are defined and their influence on fracture toughness is demonstrated. The idea of “local approach” to fracture is shortly described and some results obtained within this approach concerning the fracture toughness determination are presented. The idea of fracture energy is presented and this quantity is computed both for linear and non-linear materials using the step-like crack growth model.

PL

W pracy przeanalizowano problematykę odporności na pękanie. Pokazano, że odporność na pękanie nie jest stałą materiałową. Zależy ona także od kształtu i wymiarów elementów konstrukcyjnych. Zdefiniowano miary wiezów płaskich i w kierunku grubości oraz pokazano ich wpływ na odporność na pękanie. Idea „lokalnego podejścia” do procesu pękania jest krótko przypomniana i przytoczono niektóre rezultaty uzyskane przy stosowaniu tej idei do określania rzeczywistej odporności na pękanie. Przedstawiono też rezultaty oceny energii pękania dla materiałów plastycznych przy zastosowaniu tzw. Skowego modelu propagacji pęknięć.

Słowa kluczowe

PL

odporność na pękanie; energia pękania

EN

fracture toughness; fracture energy; in- and out-of-plane constraint

• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2007
• Tom: Vol. 52, iss. 2
• Strony: 171-180
• Opis fizyczny: Bibliogr. 41 poz., rys., tab.

Twórcy

autor

Neimitz, A.

• Mechatronics and Machine Building, Kielce University of technology, 25-314 Kielce, Al. 1000 lecia Państwa Polskiego 7

Bibliografia

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