横波检测粘接界面层多孔隙缺陷的数值分析

详细信息

Numeric Analysis of the Testing of Porosity Flaw on the Adhesive Layer with SH Wave

摘要: 建立了粘接界面层多孔隙缺陷微观结构的界面数理模型，推导了横波(SH波)在“三明治”结构传播的频散方程，对最低模式的SH波在带有多孔隙缺陷界面的双层板粘接结构的传播特性进行数值计算分析。结果表明，粘接界面层的厚度及其孔隙缺陷尺寸对导波的频散曲线有明显的影响，这可为粘接界面无损检测提供了新的方法和思路。
- 粘接界面 /
- 多孔隙缺陷 /
- 有效模量 /
- SH波
Abstract: A mathematic model of the micromechanism of porosity flaws in the adhesive layer had been built up. The characteristics of the lowest model SH waves propagating on the “sandwich” structure had been given by analyzing the dispersion equations of SH waves propagating on the structure. The results indicated that the thickness and efficiency modulus of the adhesive layer with porosity flaw could be expressed by the dispersion curves, a new nondestructive way to detecting the porosity flaw in the adhesive layer was presented.
- Adhesive layer /
- Porosity flaws /
- Efficiency modulus /
- SH waves

[1]	Claudio Pecorari, Kelly Piaras A. The quasistatic approximation for a cracked interface between a layer and a substrate[J]. J Acoust Soc Am,2000,107(5):2454-2461.
[2]	Liviu Singher, Yitzhak Segal, Emanuel Segal. Consideration in bond strength evolution by ultrasonic guided waves[J]. J Acoust Soc Am,1994,96(4):2497-2505.
[3]	Yew. Ching H. Using ultrasonic SH waves to estimate the quality of adhesive bonds: a preliminary study[J]. J Acoust Soc Am,1984,76(2):525-531.
[4]	Mclanghln R. A study of the differential scheme for composite materials[J]. Int J Engng Sci,1977,15(4):237-244.
[5]	卢子兴.泡沫塑料力学性能的理论和实验研究[D].北京:北京大学力学与工程科学系,1995:237-244.
[6]	阿肯巴赫.弹性固体中波的传播[M].上海：同济大学出版社,1992.
[7]	Rose JL, Zhu W, Zaidi M. Ultrasonic NDE of titanium diffusion bonding with guided waves[J]. Mat Eval,1998,56(4):535-539.
[8]	周晓军，莫镉秋，游红武.碳纤维复合材料分布孔隙率的超声衰减检测方法[J].复合材料学报,1997,14(3):107-113.
[9]	Chen Jinlong, Qin Yuwen. Novel quantitative nondestructive testing method for composite structures[J]. Optics and Lasers in Engineering,1998,30(3,4):299-304.
[10]	马铁军，杨思乾. LY12铝合金细小夹杂物的超声频谱法检测[J].无损探伤,2005,29(2):38-41.