恒载条件下玻璃钢长期性能的研究  

INVESTIGATION OF LONG-TERM PERFORMANCE OF GLASS FIBER REINFORCED PLASTIC UNDER CONSTANT LOAD

作　　者：朱四荣[1] 黄千稳 陈建中[1] 

机构地区：[1]武汉理工大学,武汉430070

出　　处：《玻璃钢／复合材料》2014年第4期72-75,共4页Fiber Reinforced Plastics/Composites

基　　金：国家自然科学基金资助项目(11102142);中央高校基本科研业务费专项资金资助(2012-Ia-023)

摘　　要：经过几十年的发展,玻璃钢材料已经在各项工程中得到了广泛的应用,国内外也对其做了广泛的研究,但是对玻璃钢长期性能的研究却很少。目前国内的设计方法基本上是在初始性能的基础上按一定的安全系数折减,这种设计方法的安全性有待进一步的考证。本文从粘弹性分析的角度出发,在理论研究的基础上设计了实验方案,并通过具体实验测定了不同铺层角度的玻璃钢试样在某种应力水平下保留强度与时间的关系,通过对实验数据的分析处理,推导了长期性能保留强度与时间的关系式,并结合相关规范证明了所得结论的准确性。Glass fiber reinforced plastics has been widely applied in various engineering areas for several decades.Both the domestic and foreign have carried out extensive research,but few on the longtermproperties of glass fiber reinforced plastics.The current domestic design is basically based on the initial performance reduction according to certain safety coefficient.The safety of this kind of design method needs further research.From the perspective of viscoelastic analysis,this paper designs the experiment scheme on the basis of theoretical research.And,though concrete experiment,the relationshipe of the strength of different layer spread angle of glass fiber reinforced plastic under certain stress level with the keeping time was measured.Based on the experimental data processing,the long-term performance of retained strength and its relation with the time was deduced,proving the accuracy of the conclusion by combining with the relevant specification.

关 键 词：玻璃钢 长期性能 蠕变特性 保留强度 

分 类 号：TB332[一般工业技术—材料科学与工程]