Ultrasonic welding of lap joints of PEI plates with PEI/CF-fabric prepregs
In this study, ultrasonic welding (USW) of lap joints of polyetherimide (PEI) plates (adherends) with carbon fiber (CF) prepregs impregnated with PEI was investigated. No energy director (ED) was used, so binder contents were varied in the prepregs to compensate for the lack of the polymer in the f...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2024-03-01
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| Series: | Frattura ed Integrità Strutturale |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/4831 |
| _version_ | 1797198892618481664 |
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| author | Vladislav Alexenko Defang Tian Sergey Panin Svetlana Bochkareva Iliya Panov |
| author_facet | Vladislav Alexenko Defang Tian Sergey Panin Svetlana Bochkareva Iliya Panov |
| author_sort | Vladislav Alexenko |
| collection | DOAJ |
| description |
In this study, ultrasonic welding (USW) of lap joints of polyetherimide (PEI) plates (adherends) with carbon fiber (CF) prepregs impregnated with PEI was investigated. No energy director (ED) was used, so binder contents were varied in the prepregs to compensate for the lack of the polymer in the fusion zone. In addition, the effect of the USW parameters on the structure and the mechanical properties of the lap-joints were analyzed. The most homogeneous macrostructure, the maintained structural integrity of both the CF-fabric in the prepregs and the lap-joined PEI adherends, as well as the maximum strength properties (tensile strength) were revealed for the USW joints with the minimum polymer content in the prepreg. In this case, rising the USW time from 400 up to 800 ms radically changed the macrostructure of the fusion zone, while the strength properties did not vary significantly (shear stresses were 42–48 MPa). Computer simulation of the influence of the PEI/CF-fabric ratios in the prepregs on the deformation response of the USW joints showed that the prepreg thicknesses and, accordingly, the PEI/CF ratios did not exert a noticeable effect on the strain–stress (tensile) diagrams, while the determining factor was the adhesion level.
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| first_indexed | 2024-04-24T07:07:05Z |
| format | Article |
| id | doaj.art-f2fe05a4a7384843b65e545ac71d7f3b |
| institution | Directory Open Access Journal |
| issn | 1971-8993 |
| language | English |
| last_indexed | 2024-04-24T07:07:05Z |
| publishDate | 2024-03-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Frattura ed Integrità Strutturale |
| spelling | doaj.art-f2fe05a4a7384843b65e545ac71d7f3b2024-04-22T00:21:09ZengGruppo Italiano FratturaFrattura ed Integrità Strutturale1971-89932024-03-011868Ultrasonic welding of lap joints of PEI plates with PEI/CF-fabric prepregsVladislav Alexenko0https://orcid.org/0000-0003-4375-9132Defang Tian1Sergey Panin2https://orcid.org/0000-0001-7623-7360Svetlana Bochkareva3https://orcid.org/0000-0003-4889-6128Iliya Panov4Institute of Strength Physics and Materials Science SB RAS, Tomsk, RussiaNational Research Tomsk Polytechnic University, Tomsk, RussiaInstitute of Strength Physics and Materials Science SB RAS, Tomsk, RussiaInstitute of Strength Physics and Materials Science SB RAS, Tomsk, RussiaNational Research Tomsk State University, Tomsk, Russia In this study, ultrasonic welding (USW) of lap joints of polyetherimide (PEI) plates (adherends) with carbon fiber (CF) prepregs impregnated with PEI was investigated. No energy director (ED) was used, so binder contents were varied in the prepregs to compensate for the lack of the polymer in the fusion zone. In addition, the effect of the USW parameters on the structure and the mechanical properties of the lap-joints were analyzed. The most homogeneous macrostructure, the maintained structural integrity of both the CF-fabric in the prepregs and the lap-joined PEI adherends, as well as the maximum strength properties (tensile strength) were revealed for the USW joints with the minimum polymer content in the prepreg. In this case, rising the USW time from 400 up to 800 ms radically changed the macrostructure of the fusion zone, while the strength properties did not vary significantly (shear stresses were 42–48 MPa). Computer simulation of the influence of the PEI/CF-fabric ratios in the prepregs on the deformation response of the USW joints showed that the prepreg thicknesses and, accordingly, the PEI/CF ratios did not exert a noticeable effect on the strain–stress (tensile) diagrams, while the determining factor was the adhesion level. https://www.fracturae.com/index.php/fis/article/view/4831Ultrasonic weldingLap jointPolyetherimideCarbon fiberPrepreg |
| spellingShingle | Vladislav Alexenko Defang Tian Sergey Panin Svetlana Bochkareva Iliya Panov Ultrasonic welding of lap joints of PEI plates with PEI/CF-fabric prepregs Frattura ed Integrità Strutturale Ultrasonic welding Lap joint Polyetherimide Carbon fiber Prepreg |
| title | Ultrasonic welding of lap joints of PEI plates with PEI/CF-fabric prepregs |
| title_full | Ultrasonic welding of lap joints of PEI plates with PEI/CF-fabric prepregs |
| title_fullStr | Ultrasonic welding of lap joints of PEI plates with PEI/CF-fabric prepregs |
| title_full_unstemmed | Ultrasonic welding of lap joints of PEI plates with PEI/CF-fabric prepregs |
| title_short | Ultrasonic welding of lap joints of PEI plates with PEI/CF-fabric prepregs |
| title_sort | ultrasonic welding of lap joints of pei plates with pei cf fabric prepregs |
| topic | Ultrasonic welding Lap joint Polyetherimide Carbon fiber Prepreg |
| url | https://www.fracturae.com/index.php/fis/article/view/4831 |
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