A new technique for ultrasonic nondestructive evaluation of adhesive joints: Part I. Theory Academic Article uri icon

abstract

  • In this paper we proposed a new technique for ultrasonic nondestructive evaluation (UNDE) of adhesively bonded joints. We report an exact solution to the problem of reflection and tarnsmission of a plane, time-harmonic, longitudinal wave through an N-layered medium. The solution is valid for perfectly elastic as well as linear-viscoelastic materials, and for isotropic as well as anisotropic materials (for example, fiber-reinforced composite) so long as the wavepropagation vector coincids with one of the material coordinates. The transfer function, H*(ω) is defined as the trans-mitted (or reflected) field normalized with respect to the incident field. A closed-form solution for H*(ω) for the case of an adhesive joint (consisting of two adherends joined by an adhesive layer) immersed in an elastic fluid is derived. A detailed analysis of the sensitivity of H*(ω) to the wave speed and thickness of the adherends and the adhesive is carried out. An experimental verification of the analysis is the subject of Part II of this paper. © 1992 Society for Experimental Mechanics, Inc.

author list (cited authors)

  • Hanneman, S. E., & Kinra, V. K.

complete list of authors

  • Hanneman, SE||Kinra, VK

publication date

  • January 1, 1992 11:11 AM