Experimental realization of critical thermal fuse rupture

被引:71
作者
Lamaignere, L
Carmona, F
Sornette, D
机构
[1] UNIV NICE SOPHIA ANTIPOLIS,PHYS MAT CONDENSEE LAB,F-06108 NICE 2,FRANCE
[2] UNIV CALIF LOS ANGELES,INST GEOPHYS & PLANETARY PHYS,LOS ANGELES,CA 90095
[3] UNIV CALIF LOS ANGELES,DEPT EARTH & SPACE SCI,LOS ANGELES,CA 90095
关键词
D O I
10.1103/PhysRevLett.77.2738
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present an experimental realization with electrical composites of the thermal fuse model [D. Sornette and C. Vanneste, Phys. Rev. Lett. 68, 612 (1992)], proposed as a paradigm of dynamical rupture in heterogeneous media. An isolating polymer matrix is filled with conducting particles, and the particle-particle contacts evolve due to thermal expansion of the matrix as a function of the applied current I. Above a critical current, the electric resistance R increases as a power law of time to rupture R similar to (t(r) - t)(-alpha), with alpha similar or equal to 0.65, and the breakdown time t(r) scales as t(r) similar to I-2 in agreement with the model.
引用
收藏
页码:2738 / 2741
页数:4
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