Multi-material Design in the Case of a Coupled Selection of Architectures and Materials: Application to Embedded Electronic Packaging

• Published in: Journal of materials engineering and performance Vol. 28; no. 12; pp. 7248 - 7258
• Main Authors: Baracchini, Paul, Guillebaud, Claire, Kromm, François-Xavier, Wargnier, Hervé
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.12.2019
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion and Coatings; Engineering Design; Materials Science; Quality Control; Reliability; Safety and Risk; Tribology; genetic algorithm; modeling and simulation; computational materials development; optimization algorithm; materials by design; multi-material
• ISSN: 1059-9495; 1544-1024
• DOI: 10.1007/s11665-019-04437-w

The objective of this study was to produce a methodology for designing multi-materials. This methodology was to be applied to an electronic embedded packaging structure for the aeronautics field. The reference material used for the electronic packaging was substituted for a multi-material able to combine the benefits of both material and architecture in order to enhance performance. The design of the multi-material was based on a coupled selection of materials and architectures performed using materials and geometrical pattern databases. The methodology provided both the optimal design in response to specifications and a large diversity of optimized designs (in terms of architectures and materials) relevant for the conceptual design stage. First, the optimal design of the electronic packaging was determined using a genetic algorithm. Next, the built approach integrated a hybridization of the genetic algorithm with a backtracking algorithm in order to propose optimized designs in a controlled time. Finally, the search space was modified by removing optimal designs previously identified by the genetic algorithm in order to determine a wide diversity of optimized designs.