Structure of magnetic noise in dynamic fracture -: art. no. 227204

被引：12
作者：
Kun, F
Lenkey, GB
Takács, N
Beke, DL
机构：
[1] Univ Debrecen, Dept Theoret Phys, H-4010 Debrecen, Hungary
[2] Metalelektro Ltd, H-1119 Budapest, Hungary
[3] Bay Zoltan Fdn Appl Res, Inst Logist & Prod Syst, Miskolc, Hungary
[4] Univ Debrecen, Dept Solid State Phys, H-4010 Debrecen, Hungary
来源：
PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 22期
基金：
匈牙利科学研究基金会;
关键词：
D O I：
10.1103/PhysRevLett.93.227204
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present an experimental study of magnetic emission spectra recorded during impact fracture of steel. Novel features of dynamic fracture are revealed, i.e., the distribution of the voltage signals of the spectra; furthermore, the areas and energies of voltage peaks exhibit a power law behavior. The value of the exponents of the distributions proved to be characteristic for the failure mode: ductile failure gives rise to exponents significantly higher than brittle failure. The results imply that magnetic crackling noise accompanying impact fracture has a scale invariant structure which reveals new aspects of the dynamics of the fracture process.
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页数：4
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共 22 条
[1]   FRACTALS, SCALING AND THE QUESTION OF SELF-ORGANIZED CRITICALITY IN MAGNETIZATION PROCESSES [J].
DURIN, G ;
BERTOTTI, G ;
MAGNI, A .
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY, 1995, 3 (02) :351-370
[2]   Scaling exponents for Barkhausen avalanches in polycrystalline and amorphous ferromagnets [J].
Durin, G ;
Zapperi, S .
PHYSICAL REVIEW LETTERS, 2000, 84 (20) :4705-4708
[3]   Barkhausen noise in soft amorphous magnetic materials under applied stress [J].
Durin, G ;
Zapperi, S .
JOURNAL OF APPLIED PHYSICS, 1999, 85 (08) :5196-5198
[4]   SUPERCONDUCTING VORTEX AVALANCHES [J].
FIELD, S ;
WITT, J ;
NORI, F ;
LING, XS .
PHYSICAL REVIEW LETTERS, 1995, 74 (07) :1206-1209
[5]   Instability in dynamic fracture [J].
Fineberg, J ;
Marder, M .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1999, 313 (1-2) :1-108
[6]   An experimental test of the critical behaviour of fracture precursors [J].
Guarino, A ;
Garcimartin, A ;
Ciliberto, S .
EUROPEAN PHYSICAL JOURNAL B, 1998, 6 (01) :13-24
[7]   Failure time and critical behaviour of fracture precursors in heterogeneous materials [J].
Guarino, A ;
Ciliberto, S ;
Garcimartín, A ;
Zei, M ;
Scorretti, R .
EUROPEAN PHYSICAL JOURNAL B, 2002, 26 (02) :141-151
[8]   Burst avalanches in solvable models of fibrous materials [J].
Kloster, M ;
Hansen, A ;
Hemmer, PC .
PHYSICAL REVIEW E, 1997, 56 (03) :2615-2625
[9]   On the applicability of the magnetic emission technique for determining ductile crack initiation in impact tests [J].
Lenkey, GB ;
Winkler, S .
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 1997, 20 (02) :143-150
[10]   Criticality in creep experiments on cellular glass [J].
Maes, C ;
Van Moffaert, A ;
Frederix, H ;
Strauven, H .
PHYSICAL REVIEW B, 1998, 57 (09) :4987-4990
123