Towards high-quality multi-spot-welded joints in thermoplastic composite structures

Conference paper (2017)

Authors

T. Zhao Structural Integrity & Composites - Aerospace Engineering

G. Palardy Structural Integrity & Composites - Aerospace Engineering

I.F. Villegas Structural Integrity & Composites - Aerospace Engineering

R. Benedictus Aerospace Structures & Materials

Research Group

Structural Integrity & Composites (Aerospace Engineering) (TU Delft)

Thermoplastic composites Ultrasonic spot welding Mechanical behaviour Fracture analysis Welding process control

To reference this document use:

http://resolver.tudelft.nl/uuid:0262d624-296d-4128-90e3-7db4365aa234

More Info

expand_more

Published Date

01-01-2017

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Aerospace Engineering

Department

Aerospace Structures & Materials

Research Group

Structural Integrity & Composites

Abstract

Ultrasonic welding is a promising assembly technique for thermoplastic composites and it is well-suited for spot welding. In this study, two typical welding process control strategies, i.e. displacement-controlled and energy-controlled welding, were selected to manufacture spot-welded joints. The influence of different boundary conditions, provided by different welding jigs, on the welding process and the performance of thus-created welded joints were investigated. The optimum input energy was found dependent on the welding jigs, while the optimum displacement was consistent for achieving the maximum weld strength in both welding jigs. Therefore, displacement-controlled welding showed more potential in producing consistent welds in sequential multi-spot welding.

Files

3159.pdf

(.pdf | 0.738 Mb)