ROCK TENSILE STRENGTH TEST USING DISC TYPE SAMPLES -AN INVESTIGATION ON SUB-SIZEDSPECIMENS THIS

摘要：

Estimation of rock tensile strength is an important task in many rock related projects. In this paper the indirect tensile strength of a rock material is obtained by means of two disc type samples namely the well known Brazilian disc specimen and a new suggested specimen semi-disc specimen under three point bend loading. First, finite element analyses are employed to derive a general 3-D formulation for obtaining the tensile strength of each sample. Then a series of tensile tests are conducted on a white marble using both samples and for various thicknesses. The obtained results show that the tensile strength is decreased by increasing the specimen thickness. Meanwhile, a good agreement existing between the results of two specimens suggests that the semi disc specimen can also be used for obtaining the rock tensile strength in addition to the conventional Brazilian test.

作者: M.R.M. Aliha M.R. Ayatollahi S. Khademi

作者单位: Fatigue and Fracture Lab., Department of Mechanical Engineering Iran University of Science and Technology, Narmak, Tehran, 16844, Iran.

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）