Improved consistency of bond-line thickness when conducting single lap-shear joint tests

Joe Flanagan, Lorcan Byrne, Joseph Mohan, Barry Twomey, Kenneth T. Stanton

Research output: Contribution to journalArticlepeer-review

Abstract

This article details a method for improving the consistency of bond-line thickness during lap-shear sample preparation. This includes the schematic for a lap-shear sample test rig and consideration for controlled variation of the bond-line thickness for up to ten pairs of samples at a time. Concerns regarding the curing of the samples when held on a large heat reservoir are addressed through direct measurement of the bond-rig temperature in combination with the cure chamber temperature. Additionally, the application of a release coating to the bond-rig has been demonstrated to improve ease of sample removal for the bond-rig, minimizing potential damage to the lap-shear sample set before testing. The release coating provides a clean surface for subsequent sets of samples, ensuring an even surface and reducing cleaning and degradation of the machined geometries of the rig.

Original languageEnglish
Pages (from-to)1974-1978
Number of pages5
JournalMethodsX
Volume6
DOIs
Publication statusPublished - 2019
Externally publishedYes

Keywords

  • A novel method using a specially designed & coated bond-rig to improve the consistency and accuracy of sample lay-up when bonding samples for lap-shear testing
  • Adhesion
  • Aerospace
  • Automotive
  • Lap-shear
  • Release coating
  • Tensile testing

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