Processing out-of-autoclave honeycomb structures: Internal core pressure measurements

被引：22

作者：

Kratz, James ^{[1
]}

Hubert, Pascal ^{[1
]}

机构：

[1] McGill Univ, Dept Mech Engn, Montreal, PQ H3A 2K6, Canada

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2011年 / 42卷 / 08期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Process monitoring; Mechanical testing; Prepreg; Out-of-autoclave; SANDWICH STRUCTURES;

D O I：

10.1016/j.compositesa.2011.04.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A strong desire to reduce manufacturing costs in the aerospace industry, coupled with recent advancements in out-of-autoclave prepreg materials, has created the potential to manufacture composites with only vacuum pressure. As a step towards better manufacturing of sandwich structures, we focus on the behaviour of air inside a honeycomb core during vacuum bag processing. The pressure of the air inside the core was measured in a lab-scale test fixture to simulate full-scale manufacturing. The lab-scale tests revealed pressure fluctuations if the internal core pressure equalled atmospheric pressure during processing. Furthermore, an increasing number of pressure fluctuations were observed for increasing cure temperatures. Sandwich panels cured at higher temperatures had a higher void content and a worse bond between the skin and core. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1060 / 1065

页数：6