| Issue |
MATEC Web Conf.
Volume 414, 2025
9th Scientific and Technical Days in Mechanics and Materials: Innovative Materials and Processes for Industrial and Biomedical Applications (JSTMM 2024)
|
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|---|---|---|
| Article Number | 04001 | |
| Number of page(s) | 10 | |
| Section | Mechanical Design, Modeling & Manufacturing Processes | |
| DOI | https://doi.org/10.1051/matecconf/202541404001 | |
| Published online | 02 October 2025 | |
Formability of thin SS304 steel sheets: Consideration of blank geometry
1 General Directorate of Technological Studies, DGET, Higher Institute of Technological Studies of Kef (ISET-Kef), Department of Mechanical Engineering, Boulifa University Campus, 7100 Kef, Tunisia.
2 University of Tunis, El-Manar, National Engineering School of Tunis (LR-MAI), ENIT, BP 37 le BELVEDERE 1002 Tunis, Tunisia.
3 Arts & Métiers ParisTech, École Nationale Supérieure des Arts et Métiers de Lille, Laboratory of Mechanics, Surfaces and Materials Processing (MSMP-EA7350), 8, Boulevard Louis XIV, 59046 Lille, France.
4 LMPE (LR18ES01), National Superior School of Engineers of Tunis (ENSIT), University of Tunis, 5 Av. Taha Hussein, Montfleury 1008, Tunis, Tunisia.
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Abstract
New objectives have been set for GFRP (Glass Reinforced Polymer) compo-site materials, for aeronautical structures. This essentially involves the trade-off between strength and lightness of structures. They also have good resistance to corrosion and abrasion. GFRP composites are made by free molding and finished with dedicated drill holes often for riveting assembly. Delamination associated with CNC drilling processes is a serious industrial problem. It serves as a qualification standard for GFRP composites for aeronautical structures. The purpose of this work is to develop a decision rule to minimize delamination defects during CNC drilling. The response sur-face methodology (RSM) is used. The diameter of the tool (∅) is considered in the configuration of the CN drilling by taking advantage of the expected functionality. Thus, the RSM methodology is used to establish objective modeling that correlates the drilling circumstances with the delamination fault. Therefore, the delamination is a quadratic function of the feed rates and the tool diameter. This optimizes the tool diameter and feed rate to improve the industrial performance indicators of riveted assemblies.
Key words: Formability / Erichsen Test / Optimization RSM / Damage / AISI 304
© The Authors, published by EDP Sciences, 2025
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