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Updated: Jul 6, 2026
10:36
Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction
Published on: May 20, 2018
Constant strain frequency sweep measurements on granite rock
Kristian C E Haller1, Claes M Hedberg
1Blekinge Institute of Technology 371 79 Karlskrona, Sweden.
Physical Review Letters
|March 21, 2008
Summary
This study isolates granite
Area of Science:
- Materials Science
- Acoustics
- Solid State Physics
Background:
- Granite exhibits both nonlinear acoustic distortion and slow nonequilibrium dynamics.
- Previous measurements simultaneously captured both phenomena, leading to cross-contamination of results.
Purpose of the Study:
- To isolate and evaluate the nonlinear acoustic distortion in granite.
- To establish a method for studying material nonlinearity independently of slow dynamics.
Main Methods:
- Constant strain frequency sweep measurements were employed.
- This technique effectively eliminated the influence of slow nonequilibrium dynamics.
Main Results:
- Nonlinearity in granite was evaluated independently for the first time.
- Characterization revealed lower resonance frequencies and a steeper slope, indicative of pure nonlinear acoustic response.
Conclusions:
- The study provides a method to isolate material nonlinearity.
- Accurate characterization of nonlinearity is crucial for understanding material dynamics and validating models.
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