Experimental Study on the Characteristics of Acoustic Emission in Damage Evolution Process of Marble under Uniaxial Compressive Load

• Main Author: ZHOU Xuan
• Format: Article
• Language: English
• Published: International Engineering and Technology Institute 2016-09-01
• Series: IETI Transactions on Computers
• Subjects: rock damage; acoustic emission; fractal; correlation dimension.
• Online Access: http://www.ieti.net/tc/2016/118-128.pdf

In order to study the relationship of the damage evolution and acoustic emission fractal of marble under uniaxial compressive load, damage evolution and acoustic emission(AE) character of marble under uniaxial compression are studied using MTS815.04 servo-controlled rock mechanical test system and AEwinE1.86 system. The relationship curves of damage variable and correlation dimension is analyzed. The results show that the value of correlation dimension is great and there are few feature points in the stage of initial damage, and then the values of correlation dimension drastically change and reduce as a whole and feature points increase rapidly in the stage of damage stable evolution and development, finally the values of correlation dimension reduce to the minimum and feature points are intensive in the stage of damage accelerating development. The phenomenon that the value of correlation dimension appear choppy greatly reduce can be thought failure precursor of rock and that the values of correlation dimension reduce to the minimum can be thought the damage of rock basically completed.