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D.W. Hobbs - The strength and the Stress-Strain characteristics of Oakdale Coal in Triaxial Compression
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| Schrijver: | D.W. Hobbs |
| Titel: | The strength and the Stress-Strain characteristics of Oakdale Coal in Triaxial Compression |
| ISBN: | |
| Uitgever: | Stephen Austin & Sons Ltd zj. |
| Bijzonderheid: | dunne softcover geniet, zeer goed kleine naam voorop, zeldzaam |
| Prijs: |
€ 17,60
€ 3,95
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| Meer info | reprint from the Geological Magazinne sept- october 1960 pp. 422-435 Laboratory measurements of the effect of a confining pressure on the strength and stress-strain characteristics of a metallurgical coking coal are described. Several-fold increases in the strength, the Young's modulus and the elastic strain at failure were found as the confining pressure was increased to 5,000 lb./n.2. The results are discussed in relation to various criteria of failure. It was found that failure was represented by Coulomb's equation relating shear stress and normal stress, provided the observed angles of fracture were not influenced by local edge stress concentrations. |
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