A Numerical Analysis of the Temporal and Spatial Temperature Development during the Ultrasonic Spot Welding of Fibre-Reinforced Thermoplastics
| Autor: | Niels Modler, Michael Kucher, Shahan Tutunjian, Albert Fellermayer, Martin Dannemann |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Thermoplastic 0211 other engineering and technologies 02 engineering and technology Welding Industrial and Manufacturing Engineering law.invention law Composite material Aerospace Spot welding ultrasonic welding differential ultrasonic spot welding ultrasonic weld modelling fiber-reinforced thermoplastic laminates joining of fiber-reinforced thermoplastic composites polyamide 6.6 (PA6.6) 021102 mining & metallurgy chemistry.chemical_classification lcsh:T58.7-58.8 Ultrasonic welding business.industry Mechanical Engineering Numerical analysis 021001 nanoscience & nanotechnology chemistry Mechanics of Materials Temperature jump Ultrasonic sensor 0210 nano-technology business lcsh:Production capacity. Manufacturing capacity |
| Zdroj: | Journal of Manufacturing and Materials Processing, Vol 4, Iss 30, p 30 (2020) Journal of Manufacturing and Materials Processing Volume 4 Issue 2 |
| ISSN: | 2504-4494 |
| Popis: | The ultrasonic spot welding of fibre-reinforced thermoplastic laminates has received great interest from researchers, mainly in the fields of aerospace and automotive industries. It offers an efficient solution to join large thermoplastic composite parts through the spot welding approach with a high level of automation. In this paper, the temporal and spatial development of the temperature in an ultrasonic weld spot between two fibre-reinforced thermoplastic laminates was modelled. During the ultrasonic welding of thermoplastic composite laminates without energy directors a sudden temperature jump in the weld spot is usually observed. The temperature increase occurs rapidly up to the decomposition of the thermoplastic matrix and causes the degradation of the weld spot. To understand the temperature distribution within the weld spot and to calculate its temporal development, the thermal problem was analysed using a two-dimensional explicit finite difference method. To evaluate the models, the calculated time traces of the temperature in the weld spot were compared with the experimentally obtained values under comparable conditions. |
| Databáze: | OpenAIRE |
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