基于线粘弹性的埋入式聚合物光纤传感器应变传递研究  

Research on strain transfer of embedded polymer optical fiber sensors based on linear viscoelasticity

作　　者：常新龙[1] 李明[1] 谷小飞[1] 

机构地区：[1]第二炮兵工程学院,西安710025

出　　处：《固体火箭技术》2010年第3期353-359,共7页Journal of Solid Rocket Technology

摘　　要：以埋入固体火箭发动机纤维缠绕壳体的聚合物光纤传感器为研究对象,分析了传感器与复合材料基体之间界面应变传递机理。考虑到光纤传感器和中间粘贴层为高分子聚合物,建立了包含纤芯、包层、中间粘贴层和材料基体的多层界面线粘弹性应变传递模型,推导了应变传递率和平均应变传递率,同时分析了多个中间粘贴层的应变传递情况。结果表明,聚合物光纤传感器所测的应变低于复合材料基体的真实应变,准静态应变传递率低于瞬时应变传递率,随着时间的推移,应变传递率会下降。By taking polymer optical fiber（POF） sensors embedded in filament-wound case of solid rocket motor（SRM） as research object,the interface strain transferring mechanism was analyzed.Because the POF sensors and the adhesion interlayer are macromolecular polymer,the model of multilayer interface strain transfer was established between the core of optical fiber,the cladding of optical fiber,the adhesive interlayer and the matrix material based on the linear viscoelastic theory.The strain transfer rate（STR） and the average strain transfer rate（ASTR） were derived.STR and ASTR of multi-layer mediums between the POF sensors and the matrix material were also analyzed in a similar way.The results show that the measured strain by the POF sensors is lower than the actual strain of the matrix material and STR of steady-state response is lower than that of transient response.STR decreases with the time.

关 键 词：固体火箭发动机 聚合物光纤传感器 应变传递 线粘弹性 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]