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Bending waves in crumpled sheets
G Seizilles1, E Bayart, M Adda-Bedia
1Laboratoire de Physique Statistique, Ecole Normale Supérieure, UPMC Paris 06, Université Paris Diderot, CNRS, 24 rue Lhomond, F-75005 Paris, France.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|February 7, 2012
Summary
Wave propagation in crumpled aluminum foils reveals distinct dispersion relations. These findings characterize sample structure and geometric rigidity in disordered media.
Area of Science:
- Physics of disordered media
- Wave propagation phenomena
- Materials science characterization
Background:
- Crumpled paper serves as a model for disordered media.
- Understanding wave behavior in such complex structures is crucial.
Purpose of the Study:
- To probe aluminum foils crumpled into balls and cylinders using wave propagation.
- To analyze the dispersion relations and wave propagation characteristics in these disordered samples.
Main Methods:
- Experimental wave propagation measurements on hand-crumpled and container-confined aluminum foils.
- Analysis of raw dispersion relations to identify wave modes and effective path lengths.
Main Results:
- Observed sample-to-sample variations in dispersion relations.
- Identified slow bending waves and a fast propagation mode.
- Effective path lengths differed between spherical and cylindrical crumpled foils.
Conclusions:
- Wave propagation can effectively characterize the structure and geometric rigidity of crumpled materials.
- The study highlights distinct propagation behaviors in different crumpled geometries.
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