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[1]陈浩,王璐,刘伟庆,等.温度-荷载作用下玻璃纤维增强塑料-泡沫夹层结构Ⅰ型断裂韧性分析[J].南京工业大学学报(自然科学版),2017,39(01):93-99.[doi:10.3969/j.issn.1671-7627.2017.01.015]
 CHEN Hao,WANG Lu,LIU Weiqing,et al.Analysis of I-type fracture toughness of sandwich structure with GFRP skins and a foam core under coupling effects of temperature and loading[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2017,39(01):93-99.[doi:10.3969/j.issn.1671-7627.2017.01.015]
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温度-荷载作用下玻璃纤维增强塑料-泡沫夹层结构Ⅰ型断裂韧性分析()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
39
期数:
2017年01期
页码:
93-99
栏目:
出版日期:
2017-01-21

文章信息/Info

Title:
Analysis of I-type fracture toughness of sandwich structure with GFRP skins and a foam core under coupling effects of temperature and loading
文章编号:
1671-7627(2017)01-0093-07
作者:
陈浩王璐刘伟庆霍瑞丽马亚利方园
南京工业大学 土木工程学院,江苏 南京 211800
Author(s):
CHEN HaoWANG LuLIU WeiqingHUO RuiliMA YaliFANG Yuan
College of Civil Engineering,Nanjing Tech University,Nanjing 211800,China
关键词:
夹层结构 双悬臂梁 I型 拉伸模量 应变能释放率
Keywords:
sandwich structure double cantilever beam(DCB) I-type fracture tensile modulus strain energy release rate
分类号:
TU392
DOI:
10.3969/j.issn.1671-7627.2017.01.015
文献标志码:
A
摘要:
以玻璃纤维增加塑料(GFRP)-泡沫夹层结构为研究对象,在不同温度条件下,采用拉伸试验确定聚氨酯泡沫芯材料的拉伸性能; 经差示扫描量热分析法(DSC)测试GFRP树脂的玻璃化转变温度; 通过双悬臂梁(DCB)试验研究,测试不同温度(30、50、70和90 ℃)条件下,夹层结构的I型裂纹扩展形态和界面应变能释放率,分析温度对GFRP-泡沫夹层结构界面数性能的影响。结果发现:GFRP树脂的玻璃化温度为90 ℃; 温度对聚氨酯泡沫的拉伸强度和拉伸模量影响较小; 随着温度的升高,GFRP-泡沫夹层结构的荷载呈下降趋势,界面应变能释放率的峰值越来越大。运用能量释放率断裂准则判别裂纹扩展符合理论要求。
Abstract:
With glass fiber reinforced plastic(GFRP)-foam sandwich structure as the research object,the tensile property of polyurethane foam core material was studied by intension test under different temperature, and the glass transition temperature of GFRP resin was tested by differential scanning calorimetry,and with double cantilever beam(DCB)experiment,the crack growth morphology and peak interfacial strain energy release rate of sandwich structures I-type were investigated under different temperature(30,50,70,and 90 ℃).Results showed that the glass transition temperature of GFRP resin was 90 ℃,the effect of temperature on tensile strength and tensile modulus of polyurethane foam material was much less.The load of GFRP-foam sandwich structure decrease with the increase of the temperature,but the peak interfacial strain energy release rate was increased synchronously.Thus, the energy release rate of the fracture riterion for the crack propagation is consistent with theoretical requirements.

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备注/Memo

备注/Memo:
收稿日期:2015-10-13
基金项目:国家自然科学青年基金(51408305); 江苏省自然科学基金(BK20140946); 国家自然科学基金重点项目(51238003)
作者简介:陈浩(1990—),男,江苏宝应人,硕士,主要研究方向为新型复合材料结构; 王璐(联系人),副教授,E-mail:kevinlwang@hotmail.com.
引用本文:陈浩,王璐,刘伟庆,等.温度-荷载作用下玻璃纤维增强塑料-泡沫夹层结构Ⅰ型断裂韧性分析[J].南京工业大学学报(自然科学版),2017,39(1):93-99..
更新日期/Last Update: 2017-01-15