Fiber orientation in continuous fiber-reinforced thermoplastics/metal hybrid joining via multi-pin arrays
Continuous fiber-reinforced thermoplastics (CFRTs) can in combination with high-strength metals offer characteristics that cannot be achieved with mono-material parts. One possible example is the combination of locally high-temperature resistance in the metal component with superior weight-related m...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2023-03-01
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| Series: | Science and Engineering of Composite Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/secm-2022-0165 |
| _version_ | 1827968956832415744 |
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| author | Popp Julian Busch Matthias Hausotte Tino Drummer Dietmar |
| author_facet | Popp Julian Busch Matthias Hausotte Tino Drummer Dietmar |
| author_sort | Popp Julian |
| collection | DOAJ |
| description | Continuous fiber-reinforced thermoplastics (CFRTs) can in combination with high-strength metals offer characteristics that cannot be achieved with mono-material parts. One possible example is the combination of locally high-temperature resistance in the metal component with superior weight-related mechanical properties due to the CFRT component. This approach requires a reliable and durable joining technology, which considers the material-specific properties and allows to exploit the full potential of CFRT/metal hybrid parts. A promising approach in the field of CFRT/metal joining is the use of metallic pins, which can be embedded in the locally heated CFRT component to create a form-fitting joint. In the current state of the art, primarily single-pins are investigated and characterized: especially the distinct fiber orientation in the direct pin pressing process is only described for single-pin joints. Behind this background, the present study aims at creating an understanding of the fiber orientation mechanism for multi-pin arrays. Therefore, in the scope of this study, unidirectional reinforced glass fiber/polypropylene samples are joined via direct pin pressing and infrared heating with different 1D and 2D multi-pins arrays with different pin-diameters, spacing and pin distributions. The resulting joint morphology is consequently analyzed using micro-computer-tomography. Based on the performed investigations, a model for the fiber displacement mechanism is proposed, and the first recommendations for the design of fiber-friendly multi-pin joints with unidirectional reinforcements are given. It showed that especially pin-spacing in fiber orientation in dependency of the pin diameter is critical for a fully reconsolidated joint quality, and it is suggested that a pin-offset in the fiber direction is beneficial for a fiber-friendly joining process. |
| first_indexed | 2024-04-09T18:30:35Z |
| format | Article |
| id | doaj.art-2239bd64c87a4290a7c7a5e18e766f5b |
| institution | Directory Open Access Journal |
| issn | 2191-0359 |
| language | English |
| last_indexed | 2024-04-09T18:30:35Z |
| publishDate | 2023-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Science and Engineering of Composite Materials |
| spelling | doaj.art-2239bd64c87a4290a7c7a5e18e766f5b2023-04-11T17:07:19ZengDe GruyterScience and Engineering of Composite Materials2191-03592023-03-01301p. 51210.1515/secm-2022-0165Fiber orientation in continuous fiber-reinforced thermoplastics/metal hybrid joining via multi-pin arraysPopp Julian0Busch Matthias1Hausotte Tino2Drummer Dietmar3Chair of Polymer Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, GermanyChair of Manufacturing Metrology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, GermanyChair of Manufacturing Metrology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, GermanyChair of Polymer Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, GermanyContinuous fiber-reinforced thermoplastics (CFRTs) can in combination with high-strength metals offer characteristics that cannot be achieved with mono-material parts. One possible example is the combination of locally high-temperature resistance in the metal component with superior weight-related mechanical properties due to the CFRT component. This approach requires a reliable and durable joining technology, which considers the material-specific properties and allows to exploit the full potential of CFRT/metal hybrid parts. A promising approach in the field of CFRT/metal joining is the use of metallic pins, which can be embedded in the locally heated CFRT component to create a form-fitting joint. In the current state of the art, primarily single-pins are investigated and characterized: especially the distinct fiber orientation in the direct pin pressing process is only described for single-pin joints. Behind this background, the present study aims at creating an understanding of the fiber orientation mechanism for multi-pin arrays. Therefore, in the scope of this study, unidirectional reinforced glass fiber/polypropylene samples are joined via direct pin pressing and infrared heating with different 1D and 2D multi-pins arrays with different pin-diameters, spacing and pin distributions. The resulting joint morphology is consequently analyzed using micro-computer-tomography. Based on the performed investigations, a model for the fiber displacement mechanism is proposed, and the first recommendations for the design of fiber-friendly multi-pin joints with unidirectional reinforcements are given. It showed that especially pin-spacing in fiber orientation in dependency of the pin diameter is critical for a fully reconsolidated joint quality, and it is suggested that a pin-offset in the fiber direction is beneficial for a fiber-friendly joining process.https://doi.org/10.1515/secm-2022-0165hybrid joiningcontinuous fiber-reinforced thermoplasticsglass fiberpinpin joiningdirect pressingfiber orientation |
| spellingShingle | Popp Julian Busch Matthias Hausotte Tino Drummer Dietmar Fiber orientation in continuous fiber-reinforced thermoplastics/metal hybrid joining via multi-pin arrays Science and Engineering of Composite Materials hybrid joining continuous fiber-reinforced thermoplastics glass fiber pin pin joining direct pressing fiber orientation |
| title | Fiber orientation in continuous fiber-reinforced thermoplastics/metal hybrid joining via multi-pin arrays |
| title_full | Fiber orientation in continuous fiber-reinforced thermoplastics/metal hybrid joining via multi-pin arrays |
| title_fullStr | Fiber orientation in continuous fiber-reinforced thermoplastics/metal hybrid joining via multi-pin arrays |
| title_full_unstemmed | Fiber orientation in continuous fiber-reinforced thermoplastics/metal hybrid joining via multi-pin arrays |
| title_short | Fiber orientation in continuous fiber-reinforced thermoplastics/metal hybrid joining via multi-pin arrays |
| title_sort | fiber orientation in continuous fiber reinforced thermoplastics metal hybrid joining via multi pin arrays |
| topic | hybrid joining continuous fiber-reinforced thermoplastics glass fiber pin pin joining direct pressing fiber orientation |
| url | https://doi.org/10.1515/secm-2022-0165 |
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