TY - JOUR
T1 - Improvement of interleaving Aramid pulp micro-fibers on compressive strengths of carbon fiber reinforced polymers with and without impact
AU - CHENG, Fei
AU - YANG, Guangming
AU - HU, Yunsen
AU - YUAN, Bingyan
AU - HU, Xiaozhi
N1 - Funding Information:
This work was supported financially by the National Natural Science Foundation of China (No. 52102115 ) and the Fundamental Research Funds of Southwestern University of Science and Technology, China (No. 20zx7141). The authors acknowledged the facilities, the scientific and technical assistance of Microscopy Australia at the Centre for Microscopy, Characterization & Analysis, the University of Western Australia. The authors would like to thank Shiyanjia Lab, China ( http://www.shiyanjia.com ) for SEM analysis.
Funding Information:
This work was supported financially by the National Natural Science Foundation of China (No. 52102115) and the Fundamental Research Funds of Southwestern University of Science and Technology, China (No. 20zx7141). The authors acknowledged the facilities, the scientific and technical assistance of Microscopy Australia at the Centre for Microscopy, Characterization & Analysis, the University of Western Australia. The authors would like to thank Shiyanjia Lab, China (http://www.shiyanjia.com) for SEM analysis.
Publisher Copyright:
© 2023 Chinese Society of Aeronautics and Astronautics
PY - 2023/10
Y1 - 2023/10
N2 - Compressive strengths and elastic moduli of Carbon Fiber Reinforced Polymer (CFRP) composites can be noticeably improved by multiple ultra-thin interlays with non-woven Aramid Pulp (AP) micro/nano-fibers. 10-ply CFRP specimens with 0, 2, 4, 6, 8 g/m2 AP were tested under uniaxial compression. Those flexible AP fibers, filling the resin-rich regions and further constructing the fiber bridging at the ply interfaces, can effectively suppress delamination growth and lead to very good improvements both in the compressive strength and the elastic modulus. The CFRP specimen with an optimum interlay thickness has a distinct shear failure mode instead of the typical delamination cracking along the direction of continuous carbon fibers. Compressive Strengths After Impacts (CAI) of 12.35 J were also measured, up to 90% improvement in CAI has been observed. It is concluded those ultra-thin interlays of non-woven AP micro/nano-fibers are beneficial to design and manufacture “high strength” CFRP composites.
AB - Compressive strengths and elastic moduli of Carbon Fiber Reinforced Polymer (CFRP) composites can be noticeably improved by multiple ultra-thin interlays with non-woven Aramid Pulp (AP) micro/nano-fibers. 10-ply CFRP specimens with 0, 2, 4, 6, 8 g/m2 AP were tested under uniaxial compression. Those flexible AP fibers, filling the resin-rich regions and further constructing the fiber bridging at the ply interfaces, can effectively suppress delamination growth and lead to very good improvements both in the compressive strength and the elastic modulus. The CFRP specimen with an optimum interlay thickness has a distinct shear failure mode instead of the typical delamination cracking along the direction of continuous carbon fibers. Compressive Strengths After Impacts (CAI) of 12.35 J were also measured, up to 90% improvement in CAI has been observed. It is concluded those ultra-thin interlays of non-woven AP micro/nano-fibers are beneficial to design and manufacture “high strength” CFRP composites.
KW - Aramid pulp
KW - Carbon Fiber Reinforced Polymer (CFRP)
KW - Compressive strength
KW - Interfacial reinforcing
KW - Interleaving
UR - http://www.scopus.com/inward/record.url?scp=85171594500&partnerID=8YFLogxK
U2 - 10.1016/j.cja.2023.08.009
DO - 10.1016/j.cja.2023.08.009
M3 - Article
AN - SCOPUS:85171594500
SN - 1000-9361
VL - 36
SP - 459
EP - 470
JO - Chinese Journal of Aeronautics
JF - Chinese Journal of Aeronautics
IS - 10
ER -