Durability of steel joints with ductile adhesive subjected to fatigue tests

B. Enciso, E. Paz, C. Trujillo, J. Abenojar, M. A. Martínez*

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

Abstract

The aim of this work is the study of the adhesive joints degradation within the polyurethane-steel and silicone-steel joints from the point of view of their behavior on service and under aging conditions. In order to evaluate the performance of the adhesive, the maximum strength resistance of different types of joints was calculated. This value was compared with the one obtained before the fatigue test. First, the maximum lap shear is determined in the single lap joints, followed by fatigue tests that will be done on the same lap joints with an increasing number of cycles, up to 105. Lap joints will be tested at several percentages values of the maximum lap shear. The material fatigue threshold is obtained from the resulting data. In some cases, and due to the inherent viscoelasticity of the adhesives, the samples may reach the fatigue threshold, and therefore it will not break. In those cases, the determination of damage suffered is performed by lap shear tests. The same procedure was carried out in aged silicone and polyurethanes joints and results were compared with non-aged samples. Finally, an analysis of the surface and morphological modifications, were investigated with scanning electron microscopy (SEM).

Original languageEnglish
Title of host publicationProceedings of the 7th International Conference on Fracture Fatigue and Wear, FFW 2018
EditorsMagd Abdel Wahab
PublisherPleiades journals
Pages458-463
Number of pages6
ISBN (Print)9789811304101
DOIs
Publication statusPublished - 2019
Event7th International Conference on Fracture Fatigue and Wear, FFW 2018 - Ghent, Belgium
Duration: 9 Jul 201810 Jul 2018

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference7th International Conference on Fracture Fatigue and Wear, FFW 2018
Country/TerritoryBelgium
CityGhent
Period9/07/1810/07/18

Keywords

  • Fatigue shear test
  • Flexible elastic joint
  • Fractography

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