LONGITUDINAL WAVE PROPAGATION IN ADHESIVE STRUCTURE UNDER DIFFERENT FORMS OF INTERFACES

摘要：

The description of the wave propagation in the multilayer adhesive structure under different forms of interfaces is very complex.For this issue,the reflection and transmission coefficient expressions of longitudinal and transverse waves with the dimensionless parameter ofωτ in the trilaminar plate-like adhesive structure are derived when the adhesive layer is assumed to be viscoelastic material with a relaxed time ofτ.Aluminum-epoxy resin-polystyrene adhesive structure is taken as an example to analyze the impact of changes in the angle of incidence on acoustic wave reflection and transmission characteristics.Numerical results show that regardless of the value of ωτ,interface form can not be identified in the case of normal incidence or grazing incidence of longitudinal wave.In a particular products of frequency-thickness,if the angle of incidence is appropriate,the methods of reflection and transmission coefficients of longitudinal wave or transverse wave reflection coefficient can be adopted to detect the perfect,sliding and weak bonding interfaces.The results provide a theoretical basis for the experiment of the adhesive structure by means of ultrasonic testing.

关键词： Adhesive structure Viscoelastic body Dimensionless parameters Reflection and transmission coefficients

作者: Jun-cai DING Bin WU Cun-fu HE

作者单位: College of Mechanical Engineering and Applied Electronic Technology, Beijing University of Technology, Beijing,100124, P.R.China

会议类型: 国际会议

会议名称: The 2015 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2015全国压电和声波理论及器件技术研讨会)

会议地点: 济南

会议语种:英文

页码: 232-236

在线出版日期: 2015-10-30（万方平台首次上网日期，不代表论文的发表时间）