Abstract
As structural materials, assembly for a composites panel cannot be avoided. Typically, composite panels are assembled using a fastener through a drilled hole. The main problem of drilling is delamination, which affects the strength of the assembly. In addition, the cost of drilling is high because of severe wear on drill bits. The main goal of this research is to develop a new punching operation method as an alternative to drilling during hole preparation. In this study, we investigated the effect of different puncher profiles on the quality of punched holes on composite panels. Six types of puncher profiles with minimum die clearance (1 %) were fabricated. Three quality aspects, namely, precise hole diameter, incomplete shearing, and delamination factor were measured. The conical shape puncher produced the lowest defect in terms of delamination and yielded an acceptable amount of incomplete shearing compared with the other punchers.
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Zain, M.S.M., Abdullah, A.B. & Samad, Z. Effect of puncher profile on the precision of punched holes on composite panels. Int J Adv Manuf Technol 89, 3331–3336 (2017). https://doi.org/10.1007/s00170-016-9339-0
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DOI: https://doi.org/10.1007/s00170-016-9339-0