Bending stiffness analysis of composite sandwich beam with the application of Taguchi method
Date Issued
2005
Date
2005
Author(s)
Tseng, Chi-Feng
DOI
zh-TW
Abstract
The purpose of present study was to find out a best combination level of factors, which would give an optimal bending stiffness of a composite sandwich structure. Taguchi method was used for experiment planning, while bending test was applied based on a standard testing procedure, ASTM-C393, the force-displacement relationship was output. Output data were then used to do S/N ratio and ANOVA analysis, to investigate the contribution of each factor to bending stiffness, and the optimal combination of levels could be predicted. Verification experiment was then carried out to confirm the optimized sandwich beam.
Sandwich beams made of composite laminate with foam core were brought to discussion, and the factors considered were: type of laminate, core, and adhesive, and each factor with three levels. After levels of factor were chosen, L9 orthogonal array was used to set each level of factor to form 9 sets of testament. Since the property of the objective function, bending stiffness, which is the larger-the-better, S/N ratio could be calculated, and AVOVA analysis was carried out. The results showed with the combination of CFRP lamination, and foam with density of 100kg/m3, and adhesive Kit 138, there would be an optimal stiffness. Verification test was then carried out to verify the accuracy of the predict value.
With the application of Taguchi method, the contributions of each factor to objective function were investigated. Minimal numbers of tests were required to get the result. Without reducing accuracy, the cost and time could be effectively saved. The method was recommended to be a great tool to experiment design.
Subjects
田口法
複材三明治樑
參數設計
Taguchi method
composite sandwich beam
parameter design
Type
thesis