Effect of MoS2 on microstructure and mechanical property of ultrasonically welded carbon fiber/polyamide 66
Porous defect induced by thermal decomposition is one of the most significant factors in determining the weld quality of ultrasonically welded thermoplastics. MoS2 has high thermal stability and a two-dimensional layer structure, which could play a key role in improving the thermal stability of the...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424003478 |
| _version_ | 1797247850588930048 |
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| author | Xinrong Tan Qian Zhi Yongbing Li Yuhua Chen Yuhang Hu Yuqiang Chen Xinhua Shi Hongyang Wu |
| author_facet | Xinrong Tan Qian Zhi Yongbing Li Yuhua Chen Yuhang Hu Yuqiang Chen Xinhua Shi Hongyang Wu |
| author_sort | Xinrong Tan |
| collection | DOAJ |
| description | Porous defect induced by thermal decomposition is one of the most significant factors in determining the weld quality of ultrasonically welded thermoplastics. MoS2 has high thermal stability and a two-dimensional layer structure, which could play a key role in improving the thermal stability of the thermoplastics. In this study, MoS2 with 0.5 wt%, 1.0 wt%, 1.5 wt%, and 2.0 wt% loadings are incorporated into carbon fiber/polyamide 66 composite (CF/PA 66), and its effect on microstructure and mechanical properties of the joint is evaluated with the combination of finite element analysis. Results showed the incorporation of MoS2 slightly influenced tensile property of the composite while had a considerable effect on joint performance. With 1.5 wt% loading of MoS2, the highest peak load was enhanced to 6.20 kN from 5.05 kN and the difference in peak load became limited. This is mainly because the temperature of the workpiece under the horn rose above the thermal decomposition point of the composite during ultrasonic welding (UW). However, MoS2 filler improved the thermal stability of the workpiece and alleviated the thermal decomposition of PA 66 during UW. As a result, the workpiece with MoS2 addition can endure longer weld time to increase the weld area of the joint and improve the weld microstructure and porous defect, which results in higher peak load and stability. This work provides a new solution for improving the joint strength of ultrasonically welded thermoplastics. |
| first_indexed | 2024-03-08T02:00:26Z |
| format | Article |
| id | doaj.art-04c57f8a7cff40aba74d16662c19e34a |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-24T20:05:15Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-04c57f8a7cff40aba74d16662c19e34a2024-03-24T06:58:08ZengElsevierJournal of Materials Research and Technology2238-78542024-03-012928572867Effect of MoS2 on microstructure and mechanical property of ultrasonically welded carbon fiber/polyamide 66Xinrong Tan0Qian Zhi1Yongbing Li2Yuhua Chen3Yuhang Hu4Yuqiang Chen5Xinhua Shi6Hongyang Wu7Hunan Engineering Research Center of Forming Technology and Damage Resistance Evaluation for High Efficiency Light Alloy Components, Hunan University of Science and Technology, Xiangtan, 411201, ChinaHunan Engineering Research Center of Forming Technology and Damage Resistance Evaluation for High Efficiency Light Alloy Components, Hunan University of Science and Technology, Xiangtan, 411201, China; Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structure, Shanghai Jiao Tong University, Shanghai, 200240, China; Corresponding author. Hunan Engineering Research Center of Forming Technology and Damage Resistance Evaluation for High Efficiency Light Alloy Components, Hunan University of Science and Technology, Xiangtan, 411201, ChinaShanghai Key Laboratory of Digital Manufacture for Thin-walled Structure, Shanghai Jiao Tong University, Shanghai, 200240, ChinaJiangxi Key Laboratory of Forming and Joining Technology for Aerospace Components, Nanchang Hangkong University, Nanchang, 330063, ChinaHunan Engineering Research Center of Forming Technology and Damage Resistance Evaluation for High Efficiency Light Alloy Components, Hunan University of Science and Technology, Xiangtan, 411201, ChinaHunan Engineering Research Center of Forming Technology and Damage Resistance Evaluation for High Efficiency Light Alloy Components, Hunan University of Science and Technology, Xiangtan, 411201, ChinaSBT Ultrasonic Technology Co., Ltd. Shanghai, 200240, ChinaSBT Ultrasonic Technology Co., Ltd. Shanghai, 200240, ChinaPorous defect induced by thermal decomposition is one of the most significant factors in determining the weld quality of ultrasonically welded thermoplastics. MoS2 has high thermal stability and a two-dimensional layer structure, which could play a key role in improving the thermal stability of the thermoplastics. In this study, MoS2 with 0.5 wt%, 1.0 wt%, 1.5 wt%, and 2.0 wt% loadings are incorporated into carbon fiber/polyamide 66 composite (CF/PA 66), and its effect on microstructure and mechanical properties of the joint is evaluated with the combination of finite element analysis. Results showed the incorporation of MoS2 slightly influenced tensile property of the composite while had a considerable effect on joint performance. With 1.5 wt% loading of MoS2, the highest peak load was enhanced to 6.20 kN from 5.05 kN and the difference in peak load became limited. This is mainly because the temperature of the workpiece under the horn rose above the thermal decomposition point of the composite during ultrasonic welding (UW). However, MoS2 filler improved the thermal stability of the workpiece and alleviated the thermal decomposition of PA 66 during UW. As a result, the workpiece with MoS2 addition can endure longer weld time to increase the weld area of the joint and improve the weld microstructure and porous defect, which results in higher peak load and stability. This work provides a new solution for improving the joint strength of ultrasonically welded thermoplastics.http://www.sciencedirect.com/science/article/pii/S2238785424003478Ultrasonic weldingJointsMechanical testingMicrostructural analysis |
| spellingShingle | Xinrong Tan Qian Zhi Yongbing Li Yuhua Chen Yuhang Hu Yuqiang Chen Xinhua Shi Hongyang Wu Effect of MoS2 on microstructure and mechanical property of ultrasonically welded carbon fiber/polyamide 66 Journal of Materials Research and Technology Ultrasonic welding Joints Mechanical testing Microstructural analysis |
| title | Effect of MoS2 on microstructure and mechanical property of ultrasonically welded carbon fiber/polyamide 66 |
| title_full | Effect of MoS2 on microstructure and mechanical property of ultrasonically welded carbon fiber/polyamide 66 |
| title_fullStr | Effect of MoS2 on microstructure and mechanical property of ultrasonically welded carbon fiber/polyamide 66 |
| title_full_unstemmed | Effect of MoS2 on microstructure and mechanical property of ultrasonically welded carbon fiber/polyamide 66 |
| title_short | Effect of MoS2 on microstructure and mechanical property of ultrasonically welded carbon fiber/polyamide 66 |
| title_sort | effect of mos2 on microstructure and mechanical property of ultrasonically welded carbon fiber polyamide 66 |
| topic | Ultrasonic welding Joints Mechanical testing Microstructural analysis |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424003478 |
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