Correlation between and dissipated energy of electromagnetic radiation coal rock duringcyclic loading
Abstract：Electromagnetic radiation （EMR） and dissipated energy were measured during the stress loading of coal rock. The mechanism of energy conversion during damage to the rock was studied. A relationship between EMR and dissipated energy was established that involved the hysteresis loop seen between loading and unloading of the material. Laboratory experiments on Xinlu and Junde coal samples were.performed. The cumulative EMR energy is related to the ar- ea of the hysteresis loop, which corresponds to the dissipated energy, by an equation of the form ：y = aln sc＋b. The correlation coefficient for the fit of the data to this equation was grea- ter than 0.90. Using EMR signals of different frequencies have little effect On the relationship. Adjacent samples from a mine show different total EMR release and dissipated energy. Never- the-less, these are positively correlated overall.
Keywords：coal rockEMR energydissipated energyhysteresis loop area
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 175-181 )