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NONLINEAR DYNAMICS OF MARBLE AT DIFFERENT TEMPERATURES
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering. Blekinge Inst Technol, Karlskrona, Sweden..ORCID iD: 0000-0001-8739-4492
2015 (English)In: PROCEEDINGS OF THE 22ND INTERNATIONAL CONGRESS ON SOUND AND VIBRATION: MAJOR CHALLENGES IN ACOUSTICS, NOISE AND VIBRATION RESEARCH, 2015 / [ed] Crocker, MJ Pawelczyk, M Pedrielli, F Carletti, E Luzzi, S, INT INST ACOUSTICS & VIBRATION , 2015Conference paper, Published paper (Refereed)
Abstract [en]

The temperature influence on the acoustically amplitude dependent sound speed of a marble rod was investigated. The sound speed was monitored through the resonance frequency by a series of ultrasonic frequency sweeps with successively increasing amplitudes. For the temperatures from 15 C to 60 C, the resonance frequency was measured in 5-degree increments as a function of the resonant acoustic amplitude inside the marble rod. In most of the curves the marble exhibits a softening (i.e. the sound speed decreases) with higher amplitude, but for each test run there exist one notable exception - for one temperature - where the marble gets stiffer (i.e the sound speed increases). The test also shows that the average sound velocity level first, as expected, decreases with temperature, but for the higher temperatures it increases - to well past the starting value.

Place, publisher, year, edition, pages
INT INST ACOUSTICS & VIBRATION , 2015.
National Category
Other Mechanical Engineering
Identifiers
URN: urn:nbn:se:bth-15762ISI: 000398997003045OAI: oai:DiVA.org:bth-15762DiVA, id: diva2:1174742
Conference
22nd International Congress on Sound and Vibration (ICSV), Florence
Available from: 2018-01-16 Created: 2018-01-16 Last updated: 2018-01-19Bibliographically approved

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Hedberg, Claes

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