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Can I read Development of stress-induced microcracks in Westerly Granite on EtoBox?
Development of stress-induced microcracks in Westerly Granite by Paul Tapponnier; W.F Brace is a Engineering article available to read on EtoBox.
What is Development of stress-induced microcracks in Westerly Granite about?
Ion-thinned samples under the scanning electron microscope reveal new details of the development of dilatant microcracks in stressed Westerly granite at 500 bars confining pressure, room temperature. Most cracks caused by laboratory-induced stress are long, straight and narrow, with sharp ends, in contrast to natural cavities, which are blunt, bridged and discontinuous. New cracks first begin to appear within about 500 bars stress of C', at grain boundaries and healed transgranular cracks. At around 75% of the peak stress, new transgranular cracks form, starting particularly at high angle interfaces of dissimilar minerals or, rarely, at inclined pre-existing shear cracks. Peak stress coincides with kinking in suitably oriented biotite, which together with magnetite appear to have been the centers of particularly intense brittle cracking. Crack density approximately doubles up to peak stress. The scarcity of shear cracks raises doubts a[~oltt the usual.fi'ictional interpretation of hysteresis in dilatancy; hysteresis could originate at interface-related cracks or at axial cracks themselves.
Who reads Development of stress-induced microcracks in Westerly Granite?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Paul Tapponnier; W.F Brace
- Publisher
- Elsevier BV
- Published
- 1976
- Language
- EN
- Field
- Engineering (Physical Sciences)