基于激光超声技术的产品成型耦合控制方法  

Coupling control method of product molding based on laser ultrasonic technology

作　　者：陈思[1] 柴春雷[2] CHEN Si;CHAI Chunlei(Fuzhou University of International Studies and Trade,Fuzhou 350202,China;Zhejiang University,Hangzhou 310058,China)

机构地区：[1]福州外语外贸学院,福州350202 [2]浙江大学,杭州310058

出　　处：《激光杂志》2023年第4期235-239,共5页Laser Journal

基　　金：国家社科基金(No.15BG084);福州外语外贸学院感性工学研究(No.2018KYTD—06)。

摘　　要：将激光超声波脉冲应用在材料成型中,提高产品的成型稳定性,提出基于激光超声技术的产品成型耦合控制方法。根据脉冲激光激发的超声波热力学及光谱偏移特性,构建激光超声在材料试件上的二维热传导模型,根据产品成型弹性体内的瞬态位移场分布特性,建立激光热力学耦合控制模型。测试结果表明,设计系统的产品成型检测的覆盖面较大,材料缺陷定位误差平均为3.61%,产品成型的裂缝条数最多为12条,平均成型精度为99.42%。The laser ultrasonic pulse is applied to material molding to improve the molding stability of products,and a coupling control method of product molding based on laser ultrasonic technology is proposed.According to the ultrasonic thermodynamic and spectral offset characteristics of pulsed laser excitation a two-dimensional heat conduction model of laser ultrasonic wave on the material specimen is constructed,and a laser thermodynamic coupling control model is established according to the transient displacement field distribution characteristics in the molding elastomer of the product.The test results show that the coverage of product molding detection of the design system is large,the average positioning error of material defects is 3.61%,the maximum number of cracks in product molding is 12,and the average molding accuracy is 99.42%.

关 键 词：激光 超声技术 产品成型 超声换能器 

分 类 号：TN247[电子电信—物理电子学]