Large Heat Input Automatic Welding Process to Beam-to-Column Connection of Steel Framed Structures (Report 1).

Hashida, Tomoyuki; Fujihira, Shoichiro; Arimochi, Kazushige; Ohnishi, Keizo; Minami, Fumiyoshi; Toyoda, Masao

doi:10.2207/qjjws.16.405

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

1998

DOI: 10.2207/qjjws.16.405

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Large Heat Input Automatic Welding Process to Beam-to-Column Connection of Steel Framed Structures (Report 1).

Tomoyuki Hashida¹,

Shoichiro Fujihira²,

Kazushige Arimochi³

et al.

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Local Approach to Dynamic Fracture Toughness Evaluation

Minami

Ochiai²,

Hashida³

et al. 2000

Fatigue and Fracture Mechanics: 31st Volume

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Fracture toughness properties of structural steels of 490-MPa strength class and weld metals under dynamic loading are studied in the light of the near crack tip stress fields. The loading rate in toughness tests range from 0.1 to 500 mm/s. The near-tip stress fields are analyzed by 3D-FEM considering the strain rate effect on the flow properties of materials. Temperature rise caused by high-speed plastic deformation is also included in the FE analysis. The critical CTOD at brittle fracture initiation decreases when increasing the loading rate. This is due to the elevation of a local stress near the crack tip. The local approach is applied to the dynamic fracture toughness evaluation. It is shown that the brittle fracture resistance evaluated in terms of the Weibull stress, an integrated stress over a highly stressed region near the crack tip, is a material property independent of the loading rate. Based on the Weibull stress fracture criterion, the dynamic fracture toughness can be predicted from static toughness results. An engineering procedure to estimate the loading rate effect on the fracture toughness is also presented.

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Local Approach to Dynamic Fracture Toughness Evaluation

Minami

Ochiai²,

Hashida³

et al. 2000

Fatigue and Fracture Mechanics: 31st Volume

View full text Add to dashboard Cite

show abstract

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Large Heat Input Automatic Welding Process to Beam-to-Column Connection of Steel Framed Structures (Report 1).

Cited by 1 publication

References 0 publications

Local Approach to Dynamic Fracture Toughness Evaluation

Local Approach to Dynamic Fracture Toughness Evaluation

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