Chin. Phys. Lett.  2014, Vol. 31 Issue (2): 026401    DOI: 10.1088/0256-307X/31/2/026401
CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
The Burst Time Duration in Micropillar Deformation
ZHANG Xu, SHANG Fu-Lin**
State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049
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ZHANG Xu, SHANG Fu-Lin 2014 Chin. Phys. Lett. 31 026401
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Abstract Plastic flow of single crystal micropillars proceeds through a sequence of intermittent burst slips. The burst time durations are investigated based on an extended theoretical model which incorporates the observed power-law distribution of burst sizes in compression experiments of micropillars. The results show that the burst time durations exhibit a powerlaw behavior with an exponential cutoff, suggesting the same scaling behaviors as the burst sizes. In addition, the predicted scaling exponent is found to converge to a value of 1.6. It is demonstrated that our results are consistent with the experimental data.
Received: 13 November 2013      Published: 28 February 2014
PACS:  64.60.av (Cracks, sandpiles, avalanches, and earthquakes)  
  62.20.fq (Plasticity and superplasticity)  
  62.20.F- (Deformation and plasticity)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/31/2/026401       OR      https://cpl.iphy.ac.cn/Y2014/V31/I2/026401
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ZHANG Xu
SHANG Fu-Lin
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