Effect of hydrothermal ageing on the thermal and delamination fracture behaviour of CFRP composites

被引：180

作者：

Alessi, Sabina ^{[1
]}

Pitarresi, Giuseppe ^{[1
]}

Spadaro, Giuseppe ^{[1
]}

机构：

[1] Univ Palermo, DICGIM, I-90128 Palermo, Italy

来源：

COMPOSITES PART B-ENGINEERING | 2014年 / 67卷

关键词：

Polymer-matrix composites (PMCs); Fracture toughness; Environmental degradation; Thermal analysis; MECHANICAL-PROPERTIES; EPOXY-RESIN; CARBON/EPOXY COMPOSITES; POLYMER COMPOSITES; MOISTURE ABSORPTION; INTERLAMINAR; TOUGHNESS; GLASS; TEMPERATURE; ORIENTATION;

D O I：

10.1016/j.compositesb.2014.06.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work investigates the hydrothermal ageing behaviour of a carbon fibre reinforced laminate and its epoxy matrix in bulk conditions. A model DGEBA epoxy is employed, and water uptake and dynamic mechanical thermal (DMTA) analyses have been performed on both the composites and bulk resin. Fracture toughness of the bulk resin has been measured, evidencing a substantially unmodified critical stress intensity factor K-IC, although the evidence of plasticisation effects given by DMTA. Interlaminar Mode I fracture toughness of the composite showed a variable trend towards slight decreases or slight increases, according to the prevailing toughening or embrittling mechanisms activated by the aging conditions. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：145 / 153

页数：9

共 45 条

[1] Interlaminar and intralaminar durability characterization of wet layup carbon/epoxy used in external strengthening [J].