NDE (Nondestructive Evaluation) of Adhesive Bonds. Phase 1.

Abstract

This report describes the results of a successful effort to demonstrate the feasibility of using leaky Lamb waves to detect and delineate flaws in the bond surface of metal/rubber laminates, even when adherends remain in intimate contact. It is shown that the leaky Lamb wave method can detect and image a poorly bonded surface when conventional pulse-echo method failed even to detect the flaw. A new technique was implemented for preparing partially bonded surfaces by varying the percentage of adhesive coverage, and results are provided that illustrate the sensitivity of the leaky Lamb wave method in detecting different surfaces prepared by this technique. An analytical model of the leaky Lamb wave phenomenon in homogenous, isotropic metal/rubber laminates is described. Numerical results for a metal/rubber laminate immersed in water are included.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 11, 1987
Accession Number
ADA184823

Entities

People

  • Cecil M. Teller
  • K. J. Diercks

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Waves
  • Adhesives
  • Composite Materials
  • Contracts
  • Detection
  • Engineering
  • Frequency
  • Laminates
  • Materials
  • Measurement
  • Metal Plates
  • Pull Tests
  • Reliability
  • Signal Processing
  • Test And Evaluation
  • Test Methods
  • Wave Propagation

Readers

  • Groundwater Contamination Remediation.
  • Structural Health Monitoring of Composite Structures.
  • Thin Film Deposition Science.