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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.

The project description has been provided by the project members themselves and the text has not been looked at by our editors.

Last updated 25 November 2019

Reference number 2017-03110

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