Strain measurements in the nanometer range in a particulate composite using computer-aided moiré

被引：15

作者：

C. A. Sciammarella

F. M. Sciammarella

T. Kim

机构：

[1] Dipto. de Ingenieria Mecc./Gestional, Politecnico di Basi, Illinois Institute of Technology, Chicago

[2] Illinois Institute of Technology, Chicago

来源：

Experimental Mechanics | 2003年 / 43卷 / 3期

关键词：

Computed-aided moiré; Computer-aided fringe patterns analysis; Effect of strain gradients on plastic flow; Fracture of particulate composites; Fringe multiplication; Moiré; Particulate composites; Plasticity;

D O I：

10.1007/BF02410533

中图分类号：

学科分类号：

摘要：

When using metals and polymers in structural applications the macroscopic behavior depends on events taking place at levels in micrometer and nanometer ranges. At this range, material behavior phenomena such as plasticity and fracture are size-dependent. We discuss these phenomena with regards to the case analyzed in this paper. Continuum mechanics flow theory of plasticity cannot explain the failure behavior of a particle-reinforced aluminum composite. An experimental study of the strain field in the micrometer range provides an explanation of the earlier than expected failure of the composite. We give a detailed description of the optical technique used to make the experimental mechanics measurements.

引用

页码：341 / 347

页数：6

共 17 条

[1]

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[2]

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[3]

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[4]

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[5]

Sciammarella C.A., Limits to the accuracy in the experimental determination of displacement functions by optical techniques, Fringe 93, (1993)

[6]

Sciammarella C.A., Sciammarella F.M., Heisenberg principle applied to fringe analysis, Laser interferometry X, applications, Proc. ESPI, 4101, pp. 294-303, (2000)

[7]

Sciammarella C.A., Sciammarella F.M., On the theory of moiré fringes in micromechanics, Proceedings SEM X International Congress on Experimental Mechanics, pp. 652-654, (2000)

[8]

Sciammarella C.A., Narayanan R., The determination of the components of the strain tensor in holographic interferometry, Experimental Mechanics, 24, 2, pp. 257-264, (1984)

[9]

Sciammarella C.A., Kim T., Direct Determination of Strains from Fringe Patterns, (2001)

[10]

Sciammarella C.A., Doddington C., Effect of photographic film nonlinearities on the processing of moiré dringe data, Experimental Mechanics, 7, 9, pp. 398-402, (1967)

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