Development of a Mixed Mode Testing System for Geologic Materials

Author

R. Karl Zipf, Missouri University of Science and TechnologyFollow
Z. T. Bieniawski

Editor(s)

Shah, Surendra P. and Swartz, Stuart E.

Abstract

Fracture mechanics plays an important role in studies of geologic materials such as rock and coal. Yet, fracture data are scarce for rock and most limited or unreliable for coal. A testing system was developed which can apply mixed mode loads to a crack tip in many rocks and geologic materials. It is possible to subject the test specimen to pure mode I, various mixed modes and a nearly pure mode II fracture load. The system is currently used to study the mechanics of fine fragment formation in various coals. Experimental measurements include K//I and K//I//I, fracture velocity and acoustic emission.

Recommended Citation

R. K. Zipf and Z. T. Bieniawski, "Development of a Mixed Mode Testing System for Geologic Materials," Fracture of Concrete and Rock, Springer Verlag, Jan 1987.

Meeting Name

Fracture of Concrete and Rock: SEM-RILEM International Conference.

Department(s)

Mining Engineering

Sponsor(s)

Soc for Experimental Mechanics Inc, Bethel, CT, USA
RILEM

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1987 Springer Verlag, All rights reserved.

Publication Date

01 Jan 1987