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논문 기본 정보

자료유형
학술저널
저자정보
Tassadit Bellahcene (Université Mouloud Mammeri de Tizi-Ouzou) Meziane Aberkane (Université Mouloud Mammeri de Tizi-Ouzou)
저널정보
국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.25 No.6
발행연도
2017.1
수록면
639 - 648 (10page)

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초록· 키워드

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Fracture energy values KV have been measured on cast steel, used in the container manufacture, by instrumented Charpy impact testing. This material has a large ductility on the upper transition region at +20°C and a ductile tearing with an expended plasticity before a brittle fracture on the lower transition region at -20°C. To assess the fracture toughness of this material we use, the KIC-KV correlations to measure the critical stress intensity factor KIC on the lower transition region and the dynamic force - displacement curves to measure the critical fracture toughness JρC, the essential work of fracture Γe on the upper transition region. It is found, using the KIC-KV correlations, that the critical stress intensity factor KIC remains significant, on the lower transition region, which indicating that our testing material preserves his ductility at low temperature and it is apt to be used as a container’s material. It is, also, found that the Jρ−ρ energetic criterion, used on the upper transition region, gives a good evaluation of the fracture toughness closest to those found in the literature. Finally, we show, by using the Γe-KIC relation, on the lower transition region, that the essential work of fracture is not suitable for the toughness measurement because the strong scatter of the experimental data. To complete this study by a numerical approach we used the ANSYS code to determine the critical fracture toughness JANSYS on the upper transition region.

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