Optimization of flexible printed circuit board electronics in the flow environment using response surface methodology

•Flexible printed circuit boards (FPCBs) experience more deflection and stress in the flow environment.•Optimization study was conducted on the flexible printed circuit board (FPCB) electronics.•Response surface methodology (RSM) with the central composite design technique was applied.•The separate...

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Bibliographic Details
Published in:Microelectronics and reliability 2013-12, Vol.53 (12), p.1996-2004
Main Authors: Leong, W.C., Abdullah, M.Z., Khor, C.Y.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit boards
Deflection
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Flow velocity
Mathematical models
Misalignment
Response surface methodology
Stresses
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Summary:•Flexible printed circuit boards (FPCBs) experience more deflection and stress in the flow environment.•Optimization study was conducted on the flexible printed circuit board (FPCB) electronics.•Response surface methodology (RSM) with the central composite design technique was applied.•The separate effects of the independent variables and their interactions were investigated.•The optimized condition resulted in a maximum deflection of 0.402mm and a maximum stress of 0.582MPa. A flexible printed circuit board (FPCB) is flexible, thin and lightweight; however, FPCBs experience more deflection and stress in the flow environment because of fluid–structure interaction (FSI), which affects their performance. Therefore, the present study focuses to optimize a typical FPCB electronic in order to minimize the deflection and stress induced in the system. In this study, numeric parameters (i.e., flow velocity, component size, component thickness, misalignment angle, as well as the length and width of the FPCB) were optimized using response surface methodology (RSM) with the central composite design technique. The separate effects of the independent variables and their interactions were investigated. The optimized condition was also examined to substantiate the empirical models generated using RSM. At a flow velocity of 5m/s, the optimum values of the component size, component thickness, misalignment angle, as well as the length and width of the FPCB were determined at 11.69mm, 12.37mm, −0.73°, as well as 180mm and 180mm, respectively. This optimized condition resulted in a maximum deflection of 0.402mm and a maximum stress of 0.582MPa. The findings conveyed can contribute to the development of FPCB industries.
ISSN:0026-2714
1872-941X
DOI:10.1016/j.microrel.2013.06.008