Výsledky vyhledávání - "Villegas, I.F."

In-Situ Monitoring of Weld Line Thickness in Continuous Ultrasonic Welding of Thermoplastic Composites

Autor: Akay, E., Köhler, F., Villegas, I.F., Vassilopoulos, Anastasios P., Michaud, Véronique

Publikováno v: Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability: Vol 2 – Manufacturing
Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability

Continuous ultrasonic welding (CUW) is one of the most efficient integration methods of thermoplastic composites. Researchers from our group have already utilized CUW method by using both frame based and robotic welding platforms to achieve sufficien

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Future Plans for the Development of an Industrialized Continuous Ultrasonic Welding Process

Autor: Jongbloed, B.C.P., Akay, E., Köhler, F., Villegas, I.F.

Publikováno v: Proceedings of ITHEC 2022 – 6th International Conference and Exhibition on Thermoplastic Composites – BREMEN, Germany

The need for robust joining methods for thermoplastic composites increases since the usage of these materials expands steadily in the aerospace industry. Continuous ultrasonic welding has been demonstrated in the recent years as one of the most promi

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The dangers of single-lap shear testing in understanding polymer composite welded joints

Autor: Villegas, I.F., Rans, C.D.

Publikováno v: Royal Society of London. Philosophical Transactions A. Mathematical, Physical and Engineering Sciences (online), 379(2203)

Single-lap shear (SLS) joints are straightforward to manufacture. This makes them especially attractive for testing polymer composite welded joints. Owing to local heating, which is characteristic of composite welding processes, the production of mor

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Robotic sequential ultrasonic welding of thermoplastic composites: Process development and testing

Autor: Choudhary, A., Villegas, I.F.

Publikováno v: Proceedings of the ASC 36TH Annual Technical VIRTUAL Conference

Multi-spot sequential ultrasonic welding is a promising joining technique for fibre-reinforced thermoplastic composites structures (TPC). In existing research on the multi-spot sequential ultrasonic welding process, welds are produced through the use

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Static ultrasonic welding of carbon fibre unidirectional thermoplastic materials and the influence of heat generation and heat transfer

Autor: Köhler, F., Villegas, I.F., Dransfeld, C.A., Herrmann, A.

Publikováno v: Journal of Composite Materials, 55(15)

Ultrasonic welding is a promising technology to join fibre-reinforced thermoplastic composites. While current studies are mostly limited to fabric materials the applicability to unidirectional materials, as found in aerospace structures, would offer

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Multi-spot ultrasonic welding of thermoplastic composite single-lap joints: Effect of spot spacing and number of spots on weld strength

Autor: Zhao, T., Tsakoniatis, Ioannis, Rans, C.D., Villegas, I.F., Benedictus, R.

Publikováno v: ECCM 2018-18th European Conference on Composite Materials

Thermoplastic composite spot welded joints are more well-suited for carrying shear load rather than peel load. However, peel load is difficult to be eliminated in single-lap joint configuration. In this paper, a series of mechanical tests were carrie

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Ultrasonic Welding of Thermoplastic Composites

Autor: Villegas, I.F.

Publikováno v: Frontiers in Materials, 6(10)

Ultrasonic welding is a very fast and energy-efficient technique for the joining of thermoplastic composites. This article looks into main aspects of ultrasonic welding of continuous fiber-reinforced thermoplastic composites, namely energy directors,

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Investigation on the melting of the weld interface in continuous ultrasonic welding of thermoplastic composites

Autor: Jongbloed, B.C.P., Teuwen, Julie J.E., Villegas, I.F., Benedictus, R.

Publikováno v: Proceedings of 22nd International Conference on Composite Materials (ICCM), Melbourne (Australia), 2019

Continuous ultrasonic welding is a new promising high-speed joining technique for thermoplastic composites. At the moment no straightforward method exists to find an optimum welding speed to easily obtain high strength joints. However, for static ult

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