Strain field measurement of filament-wound composites at ±55° using digital image correlation: An approach for unit cells employing flat specimens

被引：19

作者：

Arellano, M. Torres ^{[1
]}

Crouzeix, L. ^{[1
]}

Douchin, B. ^{[1
]}

Collombet, F. ^{[1
]}

Hernandez Moreno, H. ^{[2
]}

Gonzalez Velazquez, J. ^{[3
]}

机构：

[1] Univ Toulouse, INSA, UPS, ICA, F-31077 Toulouse, France

[2] Inst Politecn Nacl, ESIME Unidad Ticoman, Mexico City 07340, DF, Mexico

[3] Inst Politecn Nacl, ESIQIE GAID, Mexico City 07300, DF, Mexico

来源：

COMPOSITE STRUCTURES | 2010年 / 92卷 / 10期

关键词：

Filament winding; Unit cells; Image correlation; Strain field; FATIGUE BEHAVIOR; MECHANICAL-BEHAVIOR; INTERNAL-PRESSURE; PIPES; TUBES;

D O I：

10.1016/j.compstruct.2010.02.014

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Testing of filament-wound composites (FWC) with simplified methods is studied until now in order to generalize the mechanical response of FWC structures. To assure a good analogy between meso- and macro scales, it is necessary to design a representative specimen that include the characteristic winding pattern. This research aims at characterizing the strain field of FWC pattern at +/-55 degrees using flat specimens by measuring the displacement field with digital image correlation. Experimental procedure involves tensile testing of epoxy/glass specimens with two unit cells aligned at hoop and axial direction of the winding pattern. Validation of the strain values from digital image correlation is carried out by comparing them with strain gauge measurements and FEM simulations. Failure sequence and modes of FWC flat unit cells show good concordance with those observed in FWC cylinders exposed to buckling in previous works [1]. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2457 / 2464

页数：8

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