A Quantitative Framework for Process Control in the Structural Bonding of Aerospace Composites with MGS L418 Epoxy
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| Publicado en: | Journal of Composites Science vol. 9, no. 11 (2025), p. 603-615 |
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| Autor principal: | |
| Publicado: |
MDPI AG
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| Materias: | |
| Acceso en línea: | Citation/Abstract Full Text + Graphics Full Text - PDF |
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| 022 | |a 2504-477X | ||
| 024 | 7 | |a 10.3390/jcs9110603 |2 doi | |
| 035 | |a 3275535817 | ||
| 045 | 2 | |b d20250101 |b d20251231 | |
| 100 | 1 | |a Favela Ruben |u Colegio Nueva Vizcaya, Investigation, Chihuahua 30809, Mexico; rubenfavela@hotmail.com; Tel.: +1-316-570-2012 | |
| 245 | 1 | |a A Quantitative Framework for Process Control in the Structural Bonding of Aerospace Composites with MGS L418 Epoxy | |
| 260 | |b MDPI AG |c 2025 | ||
| 513 | |a Journal Article | ||
| 520 | 3 | |a The structural integrity of adhesively bonded composites is critically dependent on manufacturing process fidelity. While the MGS L418 epoxy system is widely used in aerospace applications, a quantitative hierarchy of its process variables is absent from the literature, leading to reliance on qualitative guidelines and inherent performance variability. This study closes this gap through a comprehensive sensitivity analysis. A 26-2 fractional factorial Design of Experiments (DOE) quantified the effects of six variables on single-lap shear strength. An Analysis of Variance (ANOVA) established a definitive hierarchy: induction time was the dominant factor, with a sub-optimal 15 min period causing a 74% strength reduction (p < 0.000). Surface preparation was the second most significant factor, with mechanical abrasion increasing strength by 17% (p = 0.000). Ambient humidity was a marginal factor (p = 0.013), linked to amine blush formation. The interaction effects were statistically insignificant, simplifying the control strategy. This work provides a validated, quantitative model that defines a robust process window, prioritizing induction time and surface preparation to de-risk manufacturing and ensure the reliability of safety-critical bonded structures. | |
| 653 | |a Process variables | ||
| 653 | |a Fractional factorial design | ||
| 653 | |a Shear tests | ||
| 653 | |a Humidity | ||
| 653 | |a Design of experiments | ||
| 653 | |a Viscosity | ||
| 653 | |a Shear strength | ||
| 653 | |a Failure analysis | ||
| 653 | |a Sensitivity analysis | ||
| 653 | |a Structural integrity | ||
| 653 | |a Process controls | ||
| 653 | |a Bond strength | ||
| 653 | |a Adhesives | ||
| 653 | |a Manufacturing | ||
| 653 | |a Variance analysis | ||
| 653 | |a Safety critical | ||
| 653 | |a Composite materials | ||
| 653 | |a Adhesive bonding | ||
| 653 | |a Surface preparation | ||
| 773 | 0 | |t Journal of Composites Science |g vol. 9, no. 11 (2025), p. 603-615 | |
| 786 | 0 | |d ProQuest |t Materials Science Database | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/3275535817/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text + Graphics |u https://www.proquest.com/docview/3275535817/fulltextwithgraphics/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/3275535817/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |