کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
775996 | 898398 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Shear fracture in sandstone under plane-strain compression
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
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چکیده انگلیسی
Experiments on Berea sandstone at 5 MPa confinement were conducted to investigate shear banding under plane-strain compression. Locations of acoustic emission showed propagation of a shear band during post-peak response. The eventual failure surface consisted of two distinct regions called primary and kinked fractures, with evidence of a process zone at the termination of the primary fracture. Features identified using thin-section microscopy suggested that the primary fracture was formed in shear while the kinks displayed mixed-mode qualities. A linear analysis of a closed crack demonstrated that part of the post-peak response could be explained as shear-crack growth, with Berea sandstone having a mode II fracture toughness of 3 MPa√m.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 73, Issue 6, April 2006, Pages 820–828
Journal: Engineering Fracture Mechanics - Volume 73, Issue 6, April 2006, Pages 820–828
نویسندگان
J.F. Labuz, J.J. Riedel, S.T. Dai,