Physics – Condensed Matter – Materials Science
Scientific paper
2006-07-24
Physics
Condensed Matter
Materials Science
4 pages, 5 figures, RevTex format
Scientific paper
We present an experimental and theoretical study of the fatigue failure of asphalt under cyclic compression. Varying the load amplitude, experiments reveal a finite fatigue limit below which the specimen does not break, while approaching the tensile strength of the material a rapid failure occurs. In the intermediate load range, the lifetime decreases with the load as a power law. We introduce two novel theoretical approaches, namely, a fiber bundle model and a fuse model, and show that both capture the major microscopic mechanisms of the fatigue failure of asphalt, providing an excellent agreement with the experimental findings. Model calculations show that the competition of damage accumulation and healing of microcracks gives rise to novel scaling laws for fatigue failure.
Andrade Jose S. Jr.
Costa H. A. M. S.
Costa Filho Raimundo N.
Herrmann Hans Jürgen
Kun Ferenc
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