Acoustic emission characterization of the temperature effect on falling weight impact damage in carbon/epoxy laminates

被引：69
|
作者：
Boominathan, R. [1 ]
Arumugam, V. [2 ]
Santulli, C. [3 ]
Sidharth, A. Adhithya Plato [2 ]
Sankar, R. Anand [2 ]
Sridhar, B. T. N. [2 ]
机构：
[1] Tagore Engn Coll, Dept Aeronaut Engn, Chennai, Tamil Nadu, India
[2] Anna Univ, Dept Aerosp Engn, Chennai 600025, Tamil Nadu, India
[3] Univ Roma La Sapienza, Dept Chem Engn Mat & Environm, Rome, Italy
来源：
COMPOSITES PART B-ENGINEERING | 2014年 / 56卷
关键词：
Polymer-matrix composites (PMCs); Impact behaviour; Mechanical properties; Acoustic emission; Temperature effect; COMPOSITE-MATERIALS; STACKING-SEQUENCE; STRENGTH; MECHANISMS; FAILURE; COMPRESSION; RESISTANCE; TENSILE; TESTS; MODES;
D O I：
10.1016/j.compositesb.2013.09.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Unidirectional (0 degrees) and cross-ply (0/90) carbon-epoxy laminates were subjected to falling weight impact loading with energy of 2.17 J, therefore not producing visible damage, at different temperatures (30, 55, 75 and 90 degrees C). Post-impact flexural tests were monitored using acoustic emission (AE). Both for unidirectional and 0/90 laminates an increase in residual flexural strength and resistance to impact was observed up to 75 degrees C, while an opposite trend was noticed closer to the glass transition temperature of the resin. From AE results it was observed that temperature and orientation play a non negligible role in altering the nature and extent of the different damage modes, namely matrix cracking, delaminations and fibre failure. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：591 / 598
页数：8
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