• English
  • Deutsch
  • Log In
    Password Login
    Research Outputs
    Fundings & Projects
    Researchers
    Institutes
    Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Artikel
  4. FE-Simulation and Experimental Characterisation of Environmental Effects on the Diffusion and Mechanical Performance of Hyperelastic Adhesive Joints
 
  • Details
  • Full
Options
August 11, 2023
Journal Article
Title

FE-Simulation and Experimental Characterisation of Environmental Effects on the Diffusion and Mechanical Performance of Hyperelastic Adhesive Joints

Abstract
In operational applications, hyperelastic adhesive joints are exposed to environmental conditions (moisture and temperature) that affect their mechanical performance. The understanding of how the environment can influence the joint durability through both static and cyclic loading is a key aspect to ensure safety and avoid over-dimensioning. The current work presents an investigation of the effect of environment conditions on the diffusion and mechanical performance of two different hyperelastic adhesive joints (a polyurethane and a silicon-modified polymer). To assess the process of moisture mass diffusion, pure adhesive samples were weighted for 387 days when subjected to outdoor weathering conditions. An FEA-diffusion procedure method was demonstrated by (i) predicting the saturation concentration at steady conditions of 40 °C/15% r.h. (40/15) and 40 °C/60% r.h. (40/60), and (ii) predicting the experienced mass change due to outdoor weathering. The reversibility of the effect of conditioning at 40 °C/60% r.h. on the mechanical properties of the adhesives was assessed via quasi-static and fatigue tensile shear testing. The results support the conclusion that conditioning with the surrogate climate of 40 °C/60% r.h. does not cause irreversible damage, as any potential decrease in shear modulus, tensile shear strength and fatigue life due to 40/60 conditioning can be reversed by re-drying at 40/15.
Author(s)
Evangelista Fernandes, Pedro Henrique
Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung IFAM  
Wulf, Andreas  
Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung IFAM  
Nagel, Christof  
Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung IFAM  
Carrillo Beber, Vinicius  
Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung IFAM  
Journal
Eng  
Open Access
DOI
10.3390/eng4030121
Additional full text version
Landing Page
Language
English
Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung IFAM  
Keyword(s)
  • hyperelastic adhesives

  • polyurethane

  • SMP

  • diffusion

  • ageing

  • FEA

  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Contact
© 2024