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Study on Smart Manufacturing of FRTP Possessing Self-Repair Function

具有自修复功能的FRTP智能制造研究

基本信息

批准号：
10555223
负责人：
FUKUDA Takehito
金额：
$ 4.67万
依托单位：
Osaka City University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

项目摘要

The followings have been obtained in the present study.1. Development of an internal strain monitoring technique with optical fiber sensors during a molding processInternal strains in the GFRP laminate including EFPI optical fiber sensors were measured during an autoclave molding. In the experiments, the sensors not only could measure heat shrinkage strains in the cooling stage, they also could detect cure shrinkage. In addition, the relations between the load and the output from the sensor were obtained quantitatively by the experiment in which shear, compression and bending loads were applied to the sensors.2. Development of a smart manufacturing technique for Fiber Reinforced Thermoplastics (FRTP)The viscosity of the molded matrix resins in FRTP was measured with a dielectric sensor during molding. From the results it was found that the change of the matrix resin viscosity could be detected from the dielectric measurement.3. Stiffness control of FRP laminates with an embedded Shape Memory Alloy (SMA)In order to realize a self-repair function by SMA for FRTP, control of the stiffness for GFRP laminates with embedded SMA wires was examined. From the results, effects of the SMA to control the stiffness were make clear under changing temperature. On the basis of the stiffness control, the warpage of the laminates containing an unsymmetrical SMA layer could be characterized.Above mentioned results of the internal strain monitoring technique with optical fiber sensors during molding and the viscosity measurement with the dielectric sensor for the matrix resins are very useful for realization of the smart manufacturing of FRTP.The stiffness control of FRP laminates with the embedded SMA is the basic technique for realization of the self-repair function of FRTP.More study is needed to accomplish the self-repair function but the fundamental results for it have been obtained in this study.

本研究获得了以下结论：1.在热压罐成型过程中，测量了包含EFPI光纤传感器的GFRP层压板的内部应变。在实验中，该传感器不仅可以测量冷却阶段的热收缩应变，还可以检测固化收缩。另外，通过对传感器施加剪切、压缩和弯曲载荷的实验，定量地得到了载荷与传感器输出之间的关系.纤维增强热塑性塑料（FRTP）智能制造技术的开发在成型期间用介电传感器测量FRTP中的成型基质树脂的粘度。结果表明，通过介电测量可以检测到基体树脂粘度的变化.内嵌形状记忆合金（SMA）的FRP层合板的刚度控制为了实现SMA对FRTP的自修复功能，对内嵌SMA丝的GFRP层合板的刚度控制进行了研究。结果表明，温度变化时SMA对刚度的控制效果明显。在刚度控制的基础上，研究结果表明，SMA层合板的刚度控制是实现FRTP智能制造的基础，而SMA层合板的刚度控制是实现FRTP智能制造的关键FRTP自修复功能的实现还需要进一步的研究，但本研究已经取得了初步的成果。