Optimizing the Process of Spot Welding of Polycarbonate-Matrix-Based Unidirectional (UD) Thermoplastic Composite Tapes
The aim of this work was to optimize spot welding of unidirectional tapes made of polycarbonate and carbon fibers. Three studies were performed to investigate the influences of various welding conditions on the quality of the welded spot. First, we used a full factorial experimental design to analyz...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/9/2182 |
| _version_ | 1797601784652365824 |
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| author | Janos Birtha Christian Marschik Eva Kobler Klaus Straka Georg Steinbichler Sven Schlecht Paul Zwicklhuber |
| author_facet | Janos Birtha Christian Marschik Eva Kobler Klaus Straka Georg Steinbichler Sven Schlecht Paul Zwicklhuber |
| author_sort | Janos Birtha |
| collection | DOAJ |
| description | The aim of this work was to optimize spot welding of unidirectional tapes made of polycarbonate and carbon fibers. Three studies were performed to investigate the influences of various welding conditions on the quality of the welded spot. First, we used a full factorial experimental design to analyze the influence of temperature and time on the welds’ tensile stress at break. Second, we repeated the experiment with optimized settings and conditions. Finally, we adopted a central composite design (CCD) to investigate the stability of the process. Our results show that temperature had the greatest influence on weld quality. The maximum tensile stress achieved was 23 MPa. Using a relatively high temperature for a short welding time resulted in self-cleaning of the welding head and in a faster and more stable process, and gel permeation chromatography (GPC) confirmed that these conditions caused no additional degradation. |
| first_indexed | 2024-03-11T04:08:46Z |
| format | Article |
| id | doaj.art-0fa11d34c7a94348bbe05f609dc506e8 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T04:08:46Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-0fa11d34c7a94348bbe05f609dc506e82023-11-17T23:36:20ZengMDPI AGPolymers2073-43602023-05-01159218210.3390/polym15092182Optimizing the Process of Spot Welding of Polycarbonate-Matrix-Based Unidirectional (UD) Thermoplastic Composite TapesJanos Birtha0Christian Marschik1Eva Kobler2Klaus Straka3Georg Steinbichler4Sven Schlecht5Paul Zwicklhuber6Institute of Polymer Injection Moulding and Process Automation, Johannes Kepler University Linz, Altenbergerstraße 69, 4040 Linz, AustriaCompetence Center CHASE GmbH, Altenbergerstraße 69, 4040 Linz, AustriaCompetence Center CHASE GmbH, Altenbergerstraße 69, 4040 Linz, AustriaInstitute of Polymer Injection Moulding and Process Automation, Johannes Kepler University Linz, Altenbergerstraße 69, 4040 Linz, AustriaInstitute of Polymer Injection Moulding and Process Automation, Johannes Kepler University Linz, Altenbergerstraße 69, 4040 Linz, AustriaCovestro Deutschland AG, Kaiser-Wilhelm-Allee 60, 51373 Leverkusen, GermanyENGEL AUSTRIA GmbH, Ludwig-Engel-Straße 1, 4311 Schwertberg, AustriaThe aim of this work was to optimize spot welding of unidirectional tapes made of polycarbonate and carbon fibers. Three studies were performed to investigate the influences of various welding conditions on the quality of the welded spot. First, we used a full factorial experimental design to analyze the influence of temperature and time on the welds’ tensile stress at break. Second, we repeated the experiment with optimized settings and conditions. Finally, we adopted a central composite design (CCD) to investigate the stability of the process. Our results show that temperature had the greatest influence on weld quality. The maximum tensile stress achieved was 23 MPa. Using a relatively high temperature for a short welding time resulted in self-cleaning of the welding head and in a faster and more stable process, and gel permeation chromatography (GPC) confirmed that these conditions caused no additional degradation.https://www.mdpi.com/2073-4360/15/9/2182thermoplastic compositesunidirectional tapesspot-weldingoptimization |
| spellingShingle | Janos Birtha Christian Marschik Eva Kobler Klaus Straka Georg Steinbichler Sven Schlecht Paul Zwicklhuber Optimizing the Process of Spot Welding of Polycarbonate-Matrix-Based Unidirectional (UD) Thermoplastic Composite Tapes Polymers thermoplastic composites unidirectional tapes spot-welding optimization |
| title | Optimizing the Process of Spot Welding of Polycarbonate-Matrix-Based Unidirectional (UD) Thermoplastic Composite Tapes |
| title_full | Optimizing the Process of Spot Welding of Polycarbonate-Matrix-Based Unidirectional (UD) Thermoplastic Composite Tapes |
| title_fullStr | Optimizing the Process of Spot Welding of Polycarbonate-Matrix-Based Unidirectional (UD) Thermoplastic Composite Tapes |
| title_full_unstemmed | Optimizing the Process of Spot Welding of Polycarbonate-Matrix-Based Unidirectional (UD) Thermoplastic Composite Tapes |
| title_short | Optimizing the Process of Spot Welding of Polycarbonate-Matrix-Based Unidirectional (UD) Thermoplastic Composite Tapes |
| title_sort | optimizing the process of spot welding of polycarbonate matrix based unidirectional ud thermoplastic composite tapes |
| topic | thermoplastic composites unidirectional tapes spot-welding optimization |
| url | https://www.mdpi.com/2073-4360/15/9/2182 |
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