Bending Research of Composite I-beam Structures with uniform loading

• Main Authors: Chung-Wei Hsu, 徐崇偉
• Other Authors: Shen-Jwu Su
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/73681482765567947542

碩士 === 中華科技大學 === 飛機系統工程研究所在職專班 === 101 === Abstract Composite materials have been used widely in high-tech products and daily supplies. It is gradually replacing the traditional metal materials and ceramic materials in today's technological era. Composite sandwich structures have the mechanical properties of light quality and high-strength; however it’s easy to cause damage to bear the load, especially for a single point and concentrated load. Hence, this research uses fiber glass/epoxy composite material and adopts the sandwich composite I-beams to study the optimization design of composite sandwich structures. In addition, discusses the level position of fiber glass and the layer intensity difference, seeks the light quality, high strength compound materials structure Liang. In here, we uses multi-tree loading test approach to simulate equally bending loads and discuss the composite I-beams bending strength, as the results to seek the best sandwich I-beam structure. This fiber sandwich structure is uses in general aviation lightweight balsa wood as the core material for I-beam. Outer structure was vertical stack of laminated coated glass fiber. On hand lamination method and process technology such as vacuum bag forming method and glue manufacture were used. The finial high strength, light weight, corrosion resistance, easy moon shape and forming of sandwich composite I-beams was done. IN order to verify it’s bending structural strength, impose the equally and single point weight to the finished product by the method of simple beam to proceed destroy experiments. Experimental results show that the fiber reinforcement structure and I-beam design can significantly enhance the beam strength of multiplied by load. Glass fiber and resin can enhance the tensile strength of wood structure and surface. Meanwhile the folding location and number of layers have large anti-bending capabilities and will be beneficial for future applications.