Press Conduction Welding for Secondary Bonding of Aircraft Skin/Stiffener Assemblies Using Carbon Fiber/PEKK Thermoplastic Composites and PEI Adhesive
This study investigates the secondary bonding of aircraft skin/stiffener assemblies using press conduction welding with carbon fiber/polyetherketoneketone thermoplastic composites and polyetherimide adhesive. Recognizing the challenges posed by conventional welding methods in maintaining material in...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-03-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/16/6/750 |
| _version_ | 1797239573460287488 |
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| author | Hyunseok Choi Chan-Joo Lee Yong-Jun Jeon Woo-Chun Choi Dongearn Kim |
| author_facet | Hyunseok Choi Chan-Joo Lee Yong-Jun Jeon Woo-Chun Choi Dongearn Kim |
| author_sort | Hyunseok Choi |
| collection | DOAJ |
| description | This study investigates the secondary bonding of aircraft skin/stiffener assemblies using press conduction welding with carbon fiber/polyetherketoneketone thermoplastic composites and polyetherimide adhesive. Recognizing the challenges posed by conventional welding methods in maintaining material integrity and uniformity, this research explores an alternative methodology that mitigates these issues while ensuring high-strength bonds. The press conduction welding parameters were selected based on single-lap shear tests and applied in the bonding of skin and omega stiffener components. The temperature range was determined using differential scanning calorimetry. The pressure was held at 1 MPa for 180 s. The welding temperature that produced a high-bonding strength was identified experimentally; these key variables were then used in the welding process of the skin and omega stiffener. By analyzing how the fibers tear and the effectiveness of interdiffusion between the plies, we were able to gain insights into the bonding strength and fractured surface. The findings suggest that press conduction welding provides a viable route for secondary bonding in thermoplastic composite structures, highlighting its advantages in terms of processing efficiency and integrity. This study contributes to the understanding of the mechanical behaviors of bonded joints and underscores the significance of temperature control in the welding process. |
| first_indexed | 2024-04-24T17:53:41Z |
| format | Article |
| id | doaj.art-490989857b654efa8acab9ebb3d3d6d7 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-04-24T17:53:41Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-490989857b654efa8acab9ebb3d3d6d72024-03-27T14:01:14ZengMDPI AGPolymers2073-43602024-03-0116675010.3390/polym16060750Press Conduction Welding for Secondary Bonding of Aircraft Skin/Stiffener Assemblies Using Carbon Fiber/PEKK Thermoplastic Composites and PEI AdhesiveHyunseok Choi0Chan-Joo Lee1Yong-Jun Jeon2Woo-Chun Choi3Dongearn Kim4Department of Mechanical Engineering, Korea University, Seoul 02841, Republic of KoreaKorea Institute of Industrial Technology (KITECH), Incheon 21999, Republic of KoreaKorea Institute of Industrial Technology (KITECH), Incheon 21999, Republic of KoreaDepartment of Mechanical Engineering, Korea University, Seoul 02841, Republic of KoreaKorea Institute of Industrial Technology (KITECH), Incheon 21999, Republic of KoreaThis study investigates the secondary bonding of aircraft skin/stiffener assemblies using press conduction welding with carbon fiber/polyetherketoneketone thermoplastic composites and polyetherimide adhesive. Recognizing the challenges posed by conventional welding methods in maintaining material integrity and uniformity, this research explores an alternative methodology that mitigates these issues while ensuring high-strength bonds. The press conduction welding parameters were selected based on single-lap shear tests and applied in the bonding of skin and omega stiffener components. The temperature range was determined using differential scanning calorimetry. The pressure was held at 1 MPa for 180 s. The welding temperature that produced a high-bonding strength was identified experimentally; these key variables were then used in the welding process of the skin and omega stiffener. By analyzing how the fibers tear and the effectiveness of interdiffusion between the plies, we were able to gain insights into the bonding strength and fractured surface. The findings suggest that press conduction welding provides a viable route for secondary bonding in thermoplastic composite structures, highlighting its advantages in terms of processing efficiency and integrity. This study contributes to the understanding of the mechanical behaviors of bonded joints and underscores the significance of temperature control in the welding process.https://www.mdpi.com/2073-4360/16/6/750thermoplastic compositesconduction weldingcarbon fiber/PEKKsecondary bondingaerospace materialsPEI adhesive |
| spellingShingle | Hyunseok Choi Chan-Joo Lee Yong-Jun Jeon Woo-Chun Choi Dongearn Kim Press Conduction Welding for Secondary Bonding of Aircraft Skin/Stiffener Assemblies Using Carbon Fiber/PEKK Thermoplastic Composites and PEI Adhesive Polymers thermoplastic composites conduction welding carbon fiber/PEKK secondary bonding aerospace materials PEI adhesive |
| title | Press Conduction Welding for Secondary Bonding of Aircraft Skin/Stiffener Assemblies Using Carbon Fiber/PEKK Thermoplastic Composites and PEI Adhesive |
| title_full | Press Conduction Welding for Secondary Bonding of Aircraft Skin/Stiffener Assemblies Using Carbon Fiber/PEKK Thermoplastic Composites and PEI Adhesive |
| title_fullStr | Press Conduction Welding for Secondary Bonding of Aircraft Skin/Stiffener Assemblies Using Carbon Fiber/PEKK Thermoplastic Composites and PEI Adhesive |
| title_full_unstemmed | Press Conduction Welding for Secondary Bonding of Aircraft Skin/Stiffener Assemblies Using Carbon Fiber/PEKK Thermoplastic Composites and PEI Adhesive |
| title_short | Press Conduction Welding for Secondary Bonding of Aircraft Skin/Stiffener Assemblies Using Carbon Fiber/PEKK Thermoplastic Composites and PEI Adhesive |
| title_sort | press conduction welding for secondary bonding of aircraft skin stiffener assemblies using carbon fiber pekk thermoplastic composites and pei adhesive |
| topic | thermoplastic composites conduction welding carbon fiber/PEKK secondary bonding aerospace materials PEI adhesive |
| url | https://www.mdpi.com/2073-4360/16/6/750 |
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