Journal ArticleDOI
Strength development versus process data in ultrasonic welding of thermoplastic composites with flat energy directors and its application to the definition of optimum processing parameters
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TLDR
In this article, the ability to relate weld strength to the welding process data, namely dissipated power and displacement of the sonotrode, in ultrasonic welding of thermoplastic composite parts with flat energy directors, is described.Abstract:
Ultrasonic welding of thermoplastic composites is a very interesting joining technique as a result of good quality joints, very short welding times and the fact that no foreign material, e.g. a metal mesh, is required at the welding interface in any case. This paper describes one further advantage, the ability to relate weld strength to the welding process data, namely dissipated power and displacement of the sonotrode, in ultrasonic welding of thermoplastic composite parts with flat energy directors. This relationship, combined with displacement-controlled welding, allows for fast definition of optimum welding parameters which consistently result in high-strength welded joints.read more
Citations
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Journal ArticleDOI
Friction welding of dissimilar plastic/polymer materials with metal powder reinforcement for engineering applications
TL;DR: In this article, an attempt has been made to perform friction welding of dissimilar plastic based materials by controlling the melt flow index (MFI) after reinforcement with metal powders.
Journal ArticleDOI
Processing of thermoplastic matrix composites through automated fiber placement and tape laying methods: A review
Khaled Yassin,Mehdi Hojjati +1 more
TL;DR: Fiber-reinforced composite materials are replacing metallic components due to their higher specific strength and stiffness as mentioned in this paper, and thermoplastics emerged to overcome the time and labor inte...
Journal ArticleDOI
On avoiding thermal degradation during welding of high-performance thermoplastic composites to thermoset composites
TL;DR: In this paper, an ultrasonic welding procedure was proposed to prevent thermal degradation of the thermoset resin during high-temperature welding of thermoplastic to thermmoset composites, based on reducing the heating time to fractions of a second during the welding process.
Journal ArticleDOI
Advances in Ultrasonic Welding of Thermoplastic Composites: A Review
TL;DR: Different ultrasonic welding modes and their processing parameters, namely, weld time, weld pressure, amplitude, type of energy directors (EDs) affecting the welding quality and the advantages and disadvantages of UW over other bonding techniques, are summarized.
Journal ArticleDOI
On the effect of flat energy directors thickness on heat generation during ultrasonic welding of thermoplastic composites
TL;DR: In this paper, the effect of the thickness of flat energy directors (ED) on heat generation at the interface during ultrasonic welding was investigated. And the extent of the heat affected zone was assessed by welding specimens without consolidation at different stages of the process.
References
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Journal ArticleDOI
Advances in fusion bonding techniques for joining thermoplastic matrix composites: a review
TL;DR: Fusion bonding and the use of thermoplastic films as hot melt adhesives offer an alternative to mechanical fastening and thermosetting adhesive bonding as discussed by the authors, which is an issue because traditional joining technologies are not directly transferable to composite structures.
Journal ArticleDOI
Analysis and evaluation of bondline thickness effects on failure load in adhesively bonded structures
TL;DR: In this paper, it is found that the through-the-thickness stress distribution in the adhesive is the main cause for the errors in predicting the strength of the adhesive joints.
Journal ArticleDOI
Heating and bonding mechanisms in ultrasonic welding of thermoplastics
TL;DR: In this paper, an experimental study of the heating and bonding mechanisms in ultrasonic welding is described, where polystyrene specimens were joined under a variety of welding conditions while the temperatures at the interface and within the interior of these specimens were measured concurrently.
Journal ArticleDOI
Ultrasonic welding of PEEK graphite APC-2 composites
TL;DR: In this paper, the authors used a five part model that includes mechanics and vibration of the parts, viscoelastic heating, heat transfer, flow and wetting, and intermolecular diffusion.
Book
Plastics and Composites Welding Handbook
TL;DR: In this article, Knjiga prikazuje sve komercijalno dostupne postupke zavarivanja plastike i plasti~nih kompozita.