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【24h】 Integration and Reliability of Active Fiber Composite (AFC) Sensors/Actuators in Carbon/Epoxy Laminates

机译碳/环氧层压板中的活性纤维复合(AFC)传感器/执行器的集成度和可靠性

【摘要】In the current study Active Fiber Composites (AFC) utilizing Lead-Zirconate-Titanate (PZT) fibers with Kapton~® screen printed interdigitated electrodes (IDE) were integrated into carbon fiber reinforced plastic (CFRP) laminates to investigate integration issues associated with smart structures and host laminate integrity. To aid in this goal surrogate or "dummy" AFC (DAFC) using a composite core and Kapton~® outer layers (to match the longitudinal mechanical and interface properties of the AFC) were employed. These DAFC were used in place of real AFC to expedite test specimen manufacture and evaluation. This allowed efficient investigation of the impact of an integrated AFC-like inclusion on laminate mechanical integrity. Laminates with integrated AFC were additionally tested with signal monitoring to assess AFC health during the test. Investigation into laminate failure was accomplished via a finite element model of the system which was created in ANSYS to investigate failure in the composite plies. Tsai-Wu failure criterion was calculated to investigate laminate failure characteristics. Integration of AFC into CFRP laminates degraded laminate strength by 13.3% using insertion integration and 7.8% using the interlacing integration technique. The finite element model showed that interlacing integration enabled distribution of critical forces over the entire laminate while insertion integration led to critical forces concentrating over the integration region.

【摘要机译】在当前的研究中,将利用锆钛酸铅(PZT)纤维和Kapton〜®丝网印刷叉指电极(IDE)的活性纤维复合材料(AFC)集成到碳纤维增强塑料(CFRP)层压板中,以研究与智能结构相关的集成问题和主机层压板的完整性。为了实现该目标,采用了使用复合芯和Kapton®外层(以匹配AFC的纵向机械性能和界面性能)的替代或“虚拟” AFC(DAFC)。这些DAFC代替了实际的AFC,以加快试样的制造和评估。这样就可以有效研究类AFC集成夹杂物对层压板机械完整性的影响。集成了AFC的层压板还经过信号监控测试,以评估测试过程中AFC的健康状况。层压板破坏的调查是通过在ANSYS中创建的用于研究复合层破坏的系统有限元模型完成的。计算了Tsai-Wu破坏准则,以研究层压板破坏特征。将AFC集成到CFRP层压板中,使用插入集成会降低层压板强度13.3%,使用交错集成技术会降低7.8%。有限元模型表明,交错集成可以使临界力分布在整个层压板上,而插入集成可以使临界力集中在集成区域上。

【原文格式】PDF

机译 活性纤维复合材料;集成;失效;传感器;
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