TY - JOUR
T1 - Enhancing weld attributes in ultrasonic spot welding of carbon fibre-reinforced thermoplastic composites
T2 - Effect of sonotrode configurations and process control
AU - Zhao, Tian
AU - Zhao, Quanyue
AU - Wu, Wenwang
AU - Xi, Li
AU - Li, Ying
AU - Wan, Zhishuai
AU - Villegas, Irene Fernandez
AU - Benedictus, Rinze
N1 - Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/4/15
Y1 - 2021/4/15
N2 - Ultrasonic welding is a versatile welding technique for the assembly of thermoplastic composite structures. The research in this paper aims at improving the manufacturing efficiency and the weld attributes, featured by welded area, weld strength and failure mechanisms, of ultrasonic spot welded joints by adopting proper sonotrodes combined with process control techniques. To achieve this goal, the research was carried out in two steps. In the first part, single-spot ultrasonic welding was performed by using sonotrodes with various diameters. The influence of the sonotrode sizes on the welding processes and weld attributes of the as-manufactured welded joints was investigated. Based on the information gathered from the first part, a novel simultaneous spot welding technique to produce two welded spots within a single step was subsequently proposed. The results in both parts indicated that the increase of the sonotrode size could significantly improve the welding efficiency. The weld attributes were also effectively enhanced by adopting proper welding force.
AB - Ultrasonic welding is a versatile welding technique for the assembly of thermoplastic composite structures. The research in this paper aims at improving the manufacturing efficiency and the weld attributes, featured by welded area, weld strength and failure mechanisms, of ultrasonic spot welded joints by adopting proper sonotrodes combined with process control techniques. To achieve this goal, the research was carried out in two steps. In the first part, single-spot ultrasonic welding was performed by using sonotrodes with various diameters. The influence of the sonotrode sizes on the welding processes and weld attributes of the as-manufactured welded joints was investigated. Based on the information gathered from the first part, a novel simultaneous spot welding technique to produce two welded spots within a single step was subsequently proposed. The results in both parts indicated that the increase of the sonotrode size could significantly improve the welding efficiency. The weld attributes were also effectively enhanced by adopting proper welding force.
KW - Fractographic analysis
KW - Thermoplastic composites
KW - Ultrasonic spot welding
KW - Weld attributes
UR - http://www.scopus.com/inward/record.url?scp=85100009304&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2021.108648
DO - 10.1016/j.compositesb.2021.108648
M3 - Article
AN - SCOPUS:85100009304
SN - 1359-8368
VL - 211
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
M1 - 108648
ER -