Ultrasound method for measurement of mechanical changes in rock bolts
| Reference number | |
| Coordinator | Luleå tekniska universitet - Institutionen för system- och rymdteknik |
| Funding from Vinnova | SEK 149 902 |
| Project duration | October 2017 - March 2018 |
| Status | Completed |
| Venture | Strategic innovation programme for process industrial IT and automation – PiiA |
| Call | 2016-05369-en |
Purpose and goal
The aim of the project was to evaluate a new ultrasound technique for monitoring of changes in mechanical properties of rock bolts. The method has been implemented and evaluated in a laboratory environment. The results show that it is possible to estimate mechanical load based on sound that has propagated through the bolt.
Expected results and effects
The main result of the project is that the method for measuring mechanical changes in rock bolts has been successfully tested through practical experiments. An application for funding of a continuation project has been submitted. The aim of the continuation project is to develop a first prototype of an instrument.
Planned approach and implementation
Method development and laboratory tests were conducted by Luleå University of Technology and Swerea KIMAB, supported by equipment from Atlas Copco and rock bolts from Pretec. The other partners participated in workshops for steering and planning of this study as well as preparation of a continuation project. The set up has worked very well, as we have exceeded the expected goals of the project, despite the relatively limited resources. In terms of time, the industrial commitment has not been that strong, but the quality has been high, significantly contributing to achieving the goals.