TY - JOUR
T1 - Mechanical behaviour of thermoplastic composites spot-welded and mechanically fastened joints
T2 - A preliminary comparison
AU - Zhao, Tian
AU - Palardy, Genevieve
AU - Fernandez Villegas, Irene
AU - Rans, Calvin
AU - Martinez, Marcias
AU - Benedictus, Rinze
PY - 2016
Y1 - 2016
N2 - The in-plane and out-of-plane mechanical behaviour of both ultrasonically spot-welded and mechanically fastened joints was investigated by double-lap shear and pull-through tests, respectively. Spot-welded specimens showed comparable onset failure load and significantly higher joint stiffness compared to mechanical fasteners when carrying shear load. The failure modes and the damage within specimens were analysed after mechanical tests. Intralaminar failure and very limited damage on the out-most ply were found for welded specimens, whereas catastrophic through-the-thickness failure was observed for mechanically fastened joints. Based on the experimental outcomes, the mechanical performance and failure mechanisms of spot-welded joints were critically assessed in comparison to the mechanical fasteners .
AB - The in-plane and out-of-plane mechanical behaviour of both ultrasonically spot-welded and mechanically fastened joints was investigated by double-lap shear and pull-through tests, respectively. Spot-welded specimens showed comparable onset failure load and significantly higher joint stiffness compared to mechanical fasteners when carrying shear load. The failure modes and the damage within specimens were analysed after mechanical tests. Intralaminar failure and very limited damage on the out-most ply were found for welded specimens, whereas catastrophic through-the-thickness failure was observed for mechanically fastened joints. Based on the experimental outcomes, the mechanical performance and failure mechanisms of spot-welded joints were critically assessed in comparison to the mechanical fasteners .
KW - Thermoplastic resin
KW - Mechanical properties
KW - Fractography
KW - Joints/joining
UR - http://resolver.tudelft.nl/uuid:96cd7d1b-2b49-4762-95ce-54e4d646ff4c
U2 - 10.1016/j.compositesb.2016.12.028
DO - 10.1016/j.compositesb.2016.12.028
M3 - Article
SN - 1359-8368
VL - 112
SP - 224
EP - 234
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
IS - 1
ER -