Experimental method for mode I fracture toughness of composite laminates using wedge loaded double cantilever beam specimens

被引：18

作者：

Oshima, Sota ^{[1
]}

Yoshimura, Akinori ^{[2
]}

Hirano, Yoshiyasu ^{[3
]}

Ogasawara, Toshio ^{[4
]}

机构：

[1] Tokyo Univ Agr & Technol, Grad Sch Engn, 2-24-16 Naka Cho, Koganei, Tokyo 1848588, Japan

[2] Nagoya Univ, Depanment Aerosp Engn, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan

[3] Japan Aerosp Explorat Agcy JAXA, Aeronaut Technol Directorate, Osawa 6-13-1, Mitaka, Tokyo 1810015, Japan

[4] Tokyo Univ Agr & Technol, Dept Mech Syst Engn, 2-24-16 Naka Cho, Koganei, Tokyo 1848588, Japan

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2018年 / 112卷

关键词：

Laminates; Delamination; Fracture toughness; INTERFACIAL FRACTURE; RESISTANCE; CFRP; STRENGTH; ENERGY; DAMAGE;

D O I：

10.1016/j.compositesa.2018.05.036

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study proposes a simple and accurate data reduction scheme for the wedge loaded double cantilever beam (DCB) specimen. The effects of axial loading applied by wedges were considered for the evaluation of mode I energy release rate. Furthermore, a methodology for the determination of crack length during the tests was proposed. The presented method was verified by both finite-element (FE) analyses and fracture toughness tests. The results of the FE analyses showed that the mode I energy release rate obtained by the presented method well agreed with that obtained by the virtual crack closure method. Both the wedge loaded DCB and standard DCB tests were carried out to verify the presented method with unidirectional carbon fiber reinforced composites. Mode I fracture toughness obtained by the wedge loaded DCB tests was almost identical to that obtained by the standard DCB tests.

引用

页码：119 / 125

页数：7

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