Paper Title:
Experimental study on the Crack Initial Stress and the Crack Damage Stress of Red Sandstone Under Different Strain Rate Conditions
  Abstract

In order to investigate the progressive failure process of brittle rock, the mechanical properties of red sandstone from southeast Shandong province were systemic studied. The stress-strain curves and failure modes of samples under different strain rates were recorded as original data. Based on these data, the axial stiffness, the volume strain, the crack volume strain, and so on were deduced for further analysis. The crack initial stress and the crack damage stress were identified by Moving Point Regression Technique and stiffness curves. The influence of strain rate on the micro-cracking process and the ultimate compression strength of red sandstone were then studied. The results show that: as the strain rate increases, the ultimate compression strength first decreases and then increases as the strain rate increases, and the ratio of crack initial stress/ultimate compression strength and crack damage stress/ultimate compression strength decreases.

  Info
Periodical
Advanced Materials Research (Volumes 287-290)
Chapter
Building Materials
Edited by
Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li
Pages
1221-1226
DOI
10.4028/www.scientific.net/AMR.287-290.1221
Citation
C. S. Chen, P. X. Fan, W. P. Li, "Experimental study on the Crack Initial Stress and the Crack Damage Stress of Red Sandstone Under Different Strain Rate Conditions", Advanced Materials Research, Vols. 287-290, pp. 1221-1226, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Li Yun Li, F.X. Che, D.A. Liu
Abstract:Multi-crack problems are deeply involved in rock-like material and rock engineering. In order to study the influences of lateral stress and...
1523
Authors: R.H.C. Wong, Y.S.H. Guo, K.T. Chau, Wei Shen Zhu, Shu Cai Li
Abstract:This paper presents the crack growth mechanism from a 3-D surface flaw on gabbro specimens using strain measurement and acoustic emission...
2357
Authors: Jun Ru Yang, Gong Ling Chen, Li Li Zhang, Jing Sun
VI. Analytical and Numerical Methods for Materials Processing
Abstract:Based on the theoretical study on the tip stress intensity factor (SIF) of the crack normal to and dwelling on the interface, using the...
525