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  • Experimental evaluation on the longitudinal compressive strength of carbon nanofibers z-threaded CFRP laminate manufactured by the magnetic compaction force assisted additive manufacturing method
Title: Experimental evaluation on the longitudinal compressive strength of carbon nanofibers z-threaded CFRP laminate manufactured by the magnetic compaction force assisted additive manufacturing method
The matrix sensitive weaknesses of Carbon Fiber Reinforced Polymer (CFRP) laminates are usually magnified by mainstream additive manufacturing (AM) methods due to the AM-process-induced voids and defects. In this paper, a novel Magnetic Compaction Force Assisted-Additive Manufacturing (MCFA-AM) method is used to print Carbon Nanofibers (CNF) Z-threaded CFRP (i.e., ZT-CFRP) composite laminates. The MCFA-AM method utilizes a magnetic force to simultaneously support, deposit, and compact Continuous Carbon Fiber Reinforced Polymer (C-CFRP) composites in free space and quickly solidifies the CFRP part without any mold; it effectively reduces the voids. Past research proved that the zig-zag threading pattern of the CNF z-threads reinforces the interlaminar and intralaminar regions in the ZT-CFRP laminates manufactured by the traditional Out of Autoclave-Vacuum Bag Only (OOA-VBO) method, and enhances the matrix sensitive mechanical, thermal, and electrical properties. In this study, the longitudinal compressive test (ASTM D695, i.e., SACMA SRM 1R-94) was performed on the MCFA-AM printed ZT-CFRP laminate. The results were compared with unaligned CNF-modified CFRP (UA-CFRP), control CFRP, and no-pressure CFRP samples’ data to investigate the impact of the CNF z-threads and MCFA-AM process on the CFRP’s performance. The 0.5-bar MCFA-AM printed ZT-CFRP showed comparable longitudinal compressive strength with the 1-bar OOA-VBO cured CFRP.  more » « less
Award ID(s):
2044513
PAR ID:
10482578
Author(s) / Creator(s):
; ; ;
Publisher / Repository:
SAMPE
Date Published:
Journal Name:
CAMX 2023 Technical Proceedings
Subject(s) / Keyword(s):
Magnetic Compaction Force Assisted-Additive Manufacturing Carbon Nanofiber Z-threaded CFRP longitudinal compressive strength
Format(s):
Medium: X
Location:
Atlanta, GA
Sponsoring Org:
National Science Foundation
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