Abstract
In this study, the vacuum-bag-only (VBO) process was used to fabricate composite laminates by employing interleaved unidirectional fully impregnated prepreg and dry fiber. The mechanical test results show that the flexure strength, compression after impact (CAI) strength and compression before impact (CBI) strength of the carbon fiber composite laminate produced by this process are about 84%, 72% and 83% of the autoclave composite laminate, respectively. The CAI strength with impact energy of 8.5 J retained about 85.4% and 96.4% of the original strength, respectively, for the components fabricated by the interleaved layup VBO and conventional autoclave processes. Ultrasonic scanning was performed for the 50 × 50 cm2 unidirectional carbon fiber composite to identify the void distribution. The results show that the composites fabricated by interleaved layup VBO process have good quality and low porosity. In the case of glass fiber composites, the hybrid laminate of this process was used to fabricate composite laminate in which unidirectional glass fiber prepregs and bidirectional dry woven glass fiber fabric are interleaved layup. The ultrasonic test results show that the internal pores of this composite laminate are very few, and the quality is good. The feasibility of applying the process to different materials or woven materials was demonstrated.
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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
The authors would like to thank the financial support from Ministry of Science and Technology in Taiwan under the contract number of MOST 109-2221-E-006-030. In addition, the authors would like to thank the assistance from the Aeronautical Systems Research Division of National Chung-Shan Institute of Science and Technology (NCSIST) in Taiwan, for the successful completion of the ultrasonic detection part of this paper.
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Chang, YY., Young, WB. Study on the Characteristics of Vacuum-Bag-Only Processed Composites by Prepreg/Fiber Interleaved Layup. Fibers Polym 24, 653–670 (2023). https://doi.org/10.1007/s12221-023-00026-w
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DOI: https://doi.org/10.1007/s12221-023-00026-w