A Study on Motorcycle Engine Fixed Linking Structure of Carbon Composite with BMC Core Materials

• Main Author: 顧耿豪
• Other Authors: 邱長塤
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/10282980426876435685

碩士 === 逢甲大學 === 纖維與複合材料學系 === 103 === In this study, the bulk molding compound was manufactured by scrap carbon fiber prepreg and epoxy resin which was added different percentages modified glass beads, then to investigate the tensile, flexural, and impact mechanical properties. The SEM was used to observe the failure mode of after flexural test specimens. The BMC materials were used as the core material to produce the motorcycle engine fixed linking of carbon composites by hot- press method as well as to investigate the tensile stiffness and weight of the structures. The experimental results showed that the tensile strength of BMC composites are decrease with increasing modified glass beads loading. The 3 wt% glass bead loading exhibited the highest flexural strength. The tensile and flexural modulus of BMC composites are increase with increasing modified glass beads loading and the best is 9wt% loading. Compared with the unfilled glass beads of BMC composites, the tensile modulus and flexural modulus of 9wt% loading structure increased 19.66 % and 12.41 %, respectively. The modified glass beads added with 9 wt% of BMC composites had the better impact properties, and compared with the unfilled BMC composites, the impact failure force and energy absorption increased 41.15% and 24.44%, respectively. To observe the image photos of SEM after flexural tested specimen showed that the failure modes included fiber breakage, fiber pull-out, microcracks and debonding. The results of tensile test of engine fixed linking structure showed that the structure made with BMC core has higher tensile stiffness than with PU core and aluminum alloy linking structures. Compared to the aluminum alloy linking structure, the tensile stiffness was increased of 167.81 % and the weight was decrease of 27.29%.