Abstract
This study proposes a single edge-cracked bending specimen under four-point bending configuration to measure the mixed-mode fracture toughness of rocks. The testing materials are sandstones. This study arranges the experimental setups of four-point bending tests for measurements of modes I + II fracture toughness. There are five different loading conditions for the mode I + II fracture toughness. These loading conditions are one mode I, three different modes I + II and one mode II. This study considers three thermal conditions: 25°C, 300°C, and 600°C. Mixed Modes fracture toughness for I + II are calculated. One observes that the mode I + II fracture toughnesses in 25°C condition are much higher than those in 300°C and 600°C conditions. Therefore, this study effectively utilizes a simple four-pointbending test to measure the mixed-mode fracture toughness of sandstones.
| Translated title of the contribution | A Study of the Measurement of Mixed Mode Fracture Toughness of Sandstones Under Various Thermal Conditions by Four-Point Bending Experiments |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 623-633 |
| Number of pages | 11 |
| Journal | Journal of the Chinese Institute of Civil and Hydraulic Engineering |
| Volume | 31 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2019 Nov 1 |
All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering