Design and Fabrication of Integrated Smart Composites

集成智能复合材料的设计和制造

• 批准号: 07650110
• 负责人: FUKUDA Takehito
• 金额: $ 0.77万
• 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 (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650110/
• 关键词: Optical Fiber Sensor; Piezoceramics; Electro-rheological Fluids; Smart CFRP Laminates; Integration; Vibration Control; Hybrid Effect; 振動制御

In the present project, the application of electro-rheological fluids (ERF) to vibration suppression of a composite beam was mainly examined. The results are divided into two categories : 1. ERF actuation performances and 2. hybrid effect of ERF and piezoceramics actuators.1. A CFRP composite beam with an ERF actuator was tested subjected to electric fields of two types of waveforms with various frequencies. These results are summarized as follows ;(1) The rectangular waveform is more effective for control of ER effects than the sinusoidal wave.(2) The beat phenomena is response of the composite beam have been observed subjected to the electric fields with frequency close to the natural frequency of the composite beam.2. A CFRP composite beam containing ERF with bonded piezoceramics was prepared and excited by sinusoidal and random inputs. Two kinds of feedback control strategies, deflection feedback control (DFC) and velocity feedback control (VFC) for the piezoceramic actuator were adopted to suppress the deflection at the free end of the composite beam. An optical fiber sensor was also used for detecting the strain responses of the beam. The following results were obtained ;(1) For sinusoidal excitations, VFC was more effective than DFC in suppressing vibration.(2) Input voltage to the piezeceramic actuator must be applied considering the suppression effect of ERF.(3) The optical fiber sensor was effectively utilized under the electric field.

本课题主要研究了电流变液在复合梁振动抑制中的应用。研究结果分为两类：1.分析结果；2. ERF驱动性能；ERF和压电陶瓷作动器的混合效应。对带ERF作动器的CFRP复合梁进行了两种不同频率波形电场作用下的试验研究。研究结果总结如下：(1)矩形波形比正弦波更能有效地控制ER效应。(2)在接近复合梁固有频率的电场作用下，观察到复合梁的振动响应。制备了一种含ERF的CFRP复合梁，并采用正弦和随机输入激励。对压电陶瓷作动器采用挠度反馈控制（DFC）和速度反馈控制（VFC）两种反馈控制策略来抑制复合梁自由端的挠度。光纤传感器还用于检测梁的应变响应。得到以下结果：(1)对于正弦激励，VFC比DFC更有效地抑制振动。(2)压电执行器的输入电压必须考虑ERF的抑制效果。(3)在电场作用下，光纤传感器得到了有效利用。

项目成果

Takeshi Takawa: "Flexural-Torsion Coupling Vibration Control of Fiber Composite Cantilevered Beam by Using Piezo-Ceramic Actuators" J.Smart Materials and Structures. (in press).

Takeshi Takawa：“使用压电陶瓷执行器对纤维复合材料悬臂梁进行弯扭耦合振动控制”J.Smart Materials and Structures。

S.KITADA and T.FUKUDA: "A New Technique for Detecting and Monitoring Impact Induced Damages in Fiber Composite Laminates with Embedded Optical Fibers" High Technology Composites in Modern Applications,Proc,of COMP'95. 477-481 (1995)

S.KITADA 和 T.FUKUDA：“一种用于检测和监测嵌入光纤的纤维复合材料层压板中冲击引起的损坏的新技术”现代应用中的高科技复合材料，Proc，of COMP95。

Takehito Fukuda: "Use of Electro-Rheological Fluids for Damping Control of CFRP Beams" Proc.Tenth International Conference on Composite Materials. V. 299-306 (1995)

Takehito Fukuda：“使用电流变液对 CFRP 梁进行阻尼控制”，第十届国际复合材料会议。

Takehito Fukuda: "Damping Control of a CFRP Cantilevered Beam with Electro-Rheological Fluids Actuator" Proc.of the 3rd International Conference on Intelligent Materials. 331-336 (1996)

Takehito Fukuda：“带有电流变流体致动器的 CFRP 悬臂梁的阻尼控制”，第三届智能材料国际会议论文集。

Takehito Fukuda: "Use of Electro-Rheological Fluids for Damping Control of CFRP Beams" Proc.Tenth International Conference on Composite Materials. V/299-V/306 (1995)

Takehito Fukuda：“使用电流变液对 CFRP 梁进行阻尼控制”，第十届国际复合材料会议。