基于激光无损扫描的纤维增强复合材料参数测试仪研发
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摘要
研发了基于激光无损扫描的纤维增强复合材料参数测试仪.首先,以纤维增强复合梁试件为例,实现了其固有频率和振动响应的理论求解.然后,选取合适的步长来构造材料参数的迭代向量,并详细介绍了纤维增强复合材料参数的辨识原理.进一步,基于复合梁试件的激振平台、激光扫描装置、信号发生及数据采集器等功能部件,完成了测试仪硬件结构的搭建,并对基于LabVIEW编写的软件及其各个模块的功能和测控优势进行了说明.最后,利用该仪器辨识获得了三个TC500碳纤维/树脂基复合梁试件在不同纤维方向对应的材料参数,并与厂家所给的相关结果进行了对比,偏差在0. 63%～10. 61%之间,证明了所开发的材料参数测试仪的可靠性及其算法的有效性.
A material parameter tester of fiber-reinforced composite materials based on the laser non-destructive scanning technique is developed. Firstly,by taking the fiber-reinforced composite beam specimen as an example,the theoretical solutions of natural frequencies and vibration responses are deduced. Then,an appropriate step size is chosen to construct the iterative vector of the material parameters,and the theoretical principle for identifying the fiber-reinforced composite material parameters is explained in details. Next,the excitation platform,laser scanning device,signal generator and data acquisition device are utilized to establish the hardware structures,and the functions as well as the control and measurement advantages of the software and corresponding modules based on LabVIEW are also described. Finally,by using this instrument,the material parameters of three TC500 carbon fiber/resin composite beam specimens in different fiber directions are identified,which are also compared with the material results provided by the manufacturer. The results show that their deviations are in the range of 0. 63% ～ 10. 61%,which is within an acceptable level. Therefore,the reliability of the developed composite material tester and the effectiveness of the related algorithm have been verified.
A material parameter tester of fiber-reinforced composite materials based on the laser non-destructive scanning technique is developed. Firstly,by taking the fiber-reinforced composite beam specimen as an example,the theoretical solutions of natural frequencies and vibration responses are deduced. Then,an appropriate step size is chosen to construct the iterative vector of the material parameters,and the theoretical principle for identifying the fiber-reinforced composite material parameters is explained in details. Next,the excitation platform,laser scanning device,signal generator and data acquisition device are utilized to establish the hardware structures,and the functions as well as the control and measurement advantages of the software and corresponding modules based on LabVIEW are also described. Finally,by using this instrument,the material parameters of three TC500 carbon fiber/resin composite beam specimens in different fiber directions are identified,which are also compared with the material results provided by the manufacturer. The results show that their deviations are in the range of 0. 63% ～ 10. 61%,which is within an acceptable level. Therefore,the reliability of the developed composite material tester and the effectiveness of the related algorithm have been verified.
引文
[1] Chu X,Ma L,Li L. A disk-pivot structure micro piezoelectric actuator using vibration mode B11[J]. Ultrasonics,2006,44(sup 1):e561.
[2] Rongong J A,Tomlinson G R. Suppression of ring vibration modes of high nodal diameter using constrained layer damping methods[J]. Smart Materials&Structures,1999,5(5):672.
[3] Araújo A L,Soares C M M,Freitas M J M D. Characterization of material parameters of composite plate specimens using optimization and experimental vibrational data[J]. Composites Part B:Engineering, 1996,27(2):185-191.
[4] Bledzki A K,Kessler A,Rikards R,et al. Determination of elastic constants of glass/epoxy unidirectional laminates by the vibration testing of plates[J]. Composites Science&Technology,1999,59(13):2015-2024.
[5] Hwang S F,Wu J C,He R S. Identification of effective elastic constants of composite plates based on a hybrid genetic algorithm[J]. Composite Structures,2009, 90(2):217-224.
[6] Matter M,Gmür T,Cugnoni J,et al. Numerical-experimental identification of the elastic and damping properties in composite plates[J]. Composite Structures,2009, 90(2):180-187.
[7]李双蓓,周小军,黄立新,等.基于有限元法的正交各向异性复合材料结构材料参数识别[J].复合材料学报,2009,26(4):197-202.(Li Shuang-bei,Zhou Xiao-jun,Huang Li-xin,et al. Material parameter identification for orthotropic composite by the finite element method[J]. Acta Materiae Compositae Sinica,2009,26(4):197-202.)
[8]薛鹏程,李晖,常永乐,等.悬臂边界下纤维增强复合薄板固有频率计算及验证[J].航空动力学报,2016,31(7):1754-1760.(Xue Peng-cheng,Li Hui,Chang Yong-le,et al. Natural frequency calculation and validation of fiber reinforced composite thin plate under cantilever boundary[J]. Journal of Aerospace Power,2016,31(7):1754-1760.)
[2] Rongong J A,Tomlinson G R. Suppression of ring vibration modes of high nodal diameter using constrained layer damping methods[J]. Smart Materials&Structures,1999,5(5):672.
[3] Araújo A L,Soares C M M,Freitas M J M D. Characterization of material parameters of composite plate specimens using optimization and experimental vibrational data[J]. Composites Part B:Engineering, 1996,27(2):185-191.
[4] Bledzki A K,Kessler A,Rikards R,et al. Determination of elastic constants of glass/epoxy unidirectional laminates by the vibration testing of plates[J]. Composites Science&Technology,1999,59(13):2015-2024.
[5] Hwang S F,Wu J C,He R S. Identification of effective elastic constants of composite plates based on a hybrid genetic algorithm[J]. Composite Structures,2009, 90(2):217-224.
[6] Matter M,Gmür T,Cugnoni J,et al. Numerical-experimental identification of the elastic and damping properties in composite plates[J]. Composite Structures,2009, 90(2):180-187.
[7]李双蓓,周小军,黄立新,等.基于有限元法的正交各向异性复合材料结构材料参数识别[J].复合材料学报,2009,26(4):197-202.(Li Shuang-bei,Zhou Xiao-jun,Huang Li-xin,et al. Material parameter identification for orthotropic composite by the finite element method[J]. Acta Materiae Compositae Sinica,2009,26(4):197-202.)
[8]薛鹏程,李晖,常永乐,等.悬臂边界下纤维增强复合薄板固有频率计算及验证[J].航空动力学报,2016,31(7):1754-1760.(Xue Peng-cheng,Li Hui,Chang Yong-le,et al. Natural frequency calculation and validation of fiber reinforced composite thin plate under cantilever boundary[J]. Journal of Aerospace Power,2016,31(7):1754-1760.)