Constant Strain Frequency Sweep Measurements on Granite Rock

Document type: Journal Articles
Article type: Original article
Peer reviewed: Yes
Full text:
Author(s): Kristian Haller, Claes Hedberg
Title: Constant Strain Frequency Sweep Measurements on Granite Rock
Journal: Physical Review Letters
Year: 2008
Volume: 100
Issue: 6
Pagination: 068501
ISSN: 0031-9007
Publisher: The American Physical Society
URI/DOI: 10.1103/PhysRevLett.100.068501
ISI number: 000253238400081
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Mechanical Engineering (Sektionen för teknik – avd. för maskinteknik)
School of Engineering S- 371 79 Karlskrona, School of Engineering S- 371 79 Karlskrona
+46 455 38 50 00
Authors e-mail:,
Language: English
Abstract: Like many materials, granite exhibits both nonlinear acoustic distortion and slow nonequilibrium dynamics. Measurements to date have shown a response from both phenomena simultaneously, thus crosscontaminating the results. In this Letter, constant strain frequency sweep measurements eliminate the slow dynamics and, for the first time, permit evaluation of nonlinearity by itself characterized by lower resonance frequencies and a steeper slope. Measurements such as these are necessary for the fundamental
understanding of material dynamics, and for the creation and validation of descriptive models.
Subject: Physical Acoustics\General
Mechanical Engineering\General
Keywords: Nonlinear acoustics, slow dynamics, constant strain sweep, granite rock