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Characterization of resistance-welded thermoplastic composite double-lap joints under static and fatigue loading

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1177/0892705713490714
AuteurRechercher : ; Rechercher : ; Rechercher : ; Rechercher : 1; Rechercher :
Affiliation du nom
  1. Conseil national de recherches du Canada. Aérospatiale
FormatTexte, Article
SujetCarbon; Carbon fibers; Composite materials; Dynamic light scattering; Fatigue of materials; Joints (structural components); Plastics; Reinforced plastics; Resistance welding; Scanning electron microscopy; Stainless steel; Steel fibers; Stresses; Thermoplastics; Double lap joint; Fatigue loadings; Fusion bonding; Mechanical performance; Single lap shears; Stainless steel mesh; Thermoplastic composite; Welding
Résumé
An experimental investigation of resistance welding of thermoplastic composite double lap shear (DLS) joints is presented. DLS specimens consisting of unidirectional carbon fibre/polyetheretherketone (CF/PEEK), carbon fibre/polyetherketoneketone (CF/PEKK), carbon fibre/polyetherimide (CF/PEI) and 8-harness satin weave fabric glass fibre/polyetherimide (GF/PEI) composites were resistance welded using a stainless steel mesh heating element. The welded specimens were tested under static and fatigue loadings, and the quality of the welds was examined using optical and scanning electron microscopy. Weld strengths of 53, 49, 45 and 34 MPa were obtained for CF/PEEK, CF/PEKK, CF/PEI and GF/PEI DLS joints, respectively. Indefinite fatigue lives were obtained between 20 and 30% of the ultimate static failure loads of the joints. Performances of the resistance-welded DLS and single lap shear (SLS) joints were compared. It was shown that the effect of joint geometry, that is, DLS versus SLS, on the mechanical performance of the resistance-welded joints is minimal, indicating a good resistance of welded joints to peel stresses.
Date de publication
Dans
  • Journal of Thermoplastic Composite Materials 28, nº 6 (juin 2014) : 762–776.
Langueanglais
Publications évaluées par des pairsOui
Numéro NPARC21275477
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Identificateur de l’enregistrementdc570819-a0d9-4dfa-bfbb-c158dfad7577
Enregistrement créé2015-07-14
Enregistrement modifié2020-04-22
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