Abstract
A fast measurement of the fracture toughness of rocks is very much required by the mining and geological industry. This paper proposes a simple rock chipping method to determine the fracture toughness of rocks using a simple experimental setup. The chipping was conducted by indenting a rock piece at a spot near its edge using a sharp indenter. The shape of the rock sample is not important provided that the chipping edge is approximately straight, and that the indenting and chipping surfaces are roughly planar and perpendicular to each other. A series of chipping tests were carried out on four kinds of sandstones, the Bauhaus, Littlewood, Appin and Pyrmont produced in New South Wales of Australia. A 30kN load cell mounted on a universal Instron machine was used to perform the indentation. Pyramidal and conical indenters were used to understand the geometry effect of the indenters on the fracture behaviour of the rocks.
| Original language | English |
|---|---|
| Title of host publication | Advances in Applied Mechanics Research, Conference Proceedings - 7th Australasian Congress on Applied Mechanics, ACAM 2012 |
| Publisher | National Committee on Applied Mechanics |
| Pages | 895-904 |
| Number of pages | 10 |
| ISBN (Print) | 9781922107619 |
| Publication status | Published - 1 Jan 2012 |
| Externally published | Yes |
| Event | 7th Australasian Congress on Applied Mechanics, ACAM 2012 - Adelaide, SA, Australia Duration: 9 Dec 2012 → 12 Dec 2012 |
Conference
| Conference | 7th Australasian Congress on Applied Mechanics, ACAM 2012 |
|---|---|
| Country/Territory | Australia |
| City | Adelaide, SA |
| Period | 9/12/12 → 12/12/12 |
Keywords
- Indenting distance
- Peak force
- Rock
- Toughness
ASJC Scopus subject areas
- Mechanics of Materials