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Measurement of the Clamping Force Applied by Load-Bearing Bolts Using a Combination of Compression and Shear Ultrasonic Waves
Luleå tekniska universitet, Institutionen för system- och rymdteknik, Signaler och system.ORCID-id: 0000-0002-6216-6132
Swerea KIMAB AB.
2015 (engelsk)Inngår i: 2015 IEEE International Ultrasonics Symposium (IUS 2015): Taipei, 21-24 Oct. 2015, Piscataway, NJ: IEEE Communications Society, 2015, artikkel-id 7329418Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Quantitative measurement of the clamping or tightening force of rods and bolts is important when assessing the structural integrity of various constructions. This paper shows that by using a bi-wave ultrasonic pulse-echo technique, it is possible to determine this tightening force without the need of extensive calibration prior to installing the bolts. We show that the ratio of the time-of-flight (TOF) between the transversal and the longitudinal waves changes linearly with the clamping force and that we only need to know the TOF of the unstrained bolt prior to installment. This is then demonstrated experimentally on a 1.1 m rock bolt, using pulses that propagated 6.6 m. Two different methods for estimation of the TOF ratio are evaluated.

sted, utgiver, år, opplag, sider
Piscataway, NJ: IEEE Communications Society, 2015. artikkel-id 7329418
Serie
Proceedings - IEEE Ultrasonics Symposium, ISSN 1948-5719
HSV kategori
Forskningsprogram
Signalbehandling
Identifikatorer
URN: urn:nbn:se:ltu:diva-26775DOI: 10.1109/ULTSYM.2015.0079ISI: 000366045700341Scopus ID: 84962007063Lokal ID: 003caf40-b8ad-4d66-83ef-c1c0fe435609ISBN: 978-1-4799-8182-3 (tryckt)OAI: oai:DiVA.org:ltu-26775DiVA, id: diva2:999955
Konferanse
IEEE International Ultrasonics Symposium : 21/10/2015 - 24/10/2015
Merknad
Validerad; 2016; Nivå 1; 20151207 (johanc)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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