RATE EFFECTS ON MODE-I INTERLAMINAR FRACTURE-TOUGHNESS IN COMPOSITE-MATERIALS

被引：149

作者：

SMILEY, AJ

PIPES, RB

机构：

[1] Univ of Delaware, Newark, DE, USA, Univ of Delaware, Newark, DE, USA

来源：

JOURNAL OF COMPOSITE MATERIALS | 1987年 / 21卷 / 07期

关键词：

BEAMS AND GIRDERS - GRAPHITE - LAMINATED PRODUCTS - POLYMERS;

D O I：

10.1177/002199838702100706

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The Double Cantilever Beam (DCB) test geometry was utilized to investigate the rate effects on Mode I interlaminar fracture toughness in graphite/PEEK and graphite/epoxy composites. The tests were performed over a range of crosshead speeds from 4. 2 multiplied by 10** minus **6 to 6. 7 multiplied by 10** minus **1 m/s. The results indicate that the toughness of both material systems is rate sensitive. The Mode I interlaminar fracture toughness of the graphite/PEEK material decreases from 1. 5 to 0. 35 kJ/m**2 over five decades of opening rate. The fracture toughness of the graphite/epoxy material decreases from 0. 18 to 0. 04 kJ/m**2 over four decades of loading rate.

引用

页码：670 / 687

页数：18