Abstract
In a previous note1 it was mentioned that mechanical properties are involved in the Stopes' classification of the petrological constituents of coals2, and they are of interest in any general study of the physical properties of coals. Much of the previous work on this subject has been undertaken from the point of view of mechanical failures in mines, or breakage in handling. Stress-strain relationships for coals have been obtained3 by compression methods using large-scale engineering test machines, and while our experiments were in progress Bangham and Maggs4 reported measurements of the elastic moduli of coals in expansion on adsorption of vapours and in mechanical compression on a small scale.
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References
Cannon, and George, Nature, 150, 690 (1942).
Stopes, Fuel, 14, 4 (1935).
Holland, Amer. Inst. Min. Met. Eng., Tech. Pub. 1406 (1942) 19 refs.
Bangham, and Maggs, "Ultrafine Structure of Coals and Cokes" (B.C.U.R.A., 1944).
Bennett, Brown, and Crone, J. Inst. Fuel., 10, 22 (1936); 14, 111 (1941).
Heywood (discussion of ref. 5 above), J. S. Wales Inst. Eng. (October 1941).
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CANNON, C., GEORGE, W. Coefficient of Restitution of Coals. Nature 155, 787–788 (1945). https://doi.org/10.1038/155787a0
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DOI: https://doi.org/10.1038/155787a0
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