Additive manufacturing of multimaterial and multifunctional -structures via ultrasonic embedding of continuous carbon fiber
作者： David Espalin , Yirong Lin , Luis Chavez , Jose L. Coronel , Kazi Md Masum Billah
DOI: 10.1016/J.JCOMC.2021.100149
关键词:
摘要: Abstract Multimaterial and multifunctional parts were fabricated using an ultrasonic embedding technology in combination with 3D printing of thermoplastic. Continuous carbon fiber (CF) bundles impregnated polycarbonate solution (7 wt.%) prior to use the process. Using tool, a single layer CF bundle was embedded into printed containing one three raster angles (RA): 0°, +45/-45°, 90° RA. In tensile testing, highest ultimate stress (UTS) found samples +45/-45° RA (75% higher UTS when compared neat having same RA), followed by those 0° (60% increase). Samples (bundle) yielded least improvement (13%). Statistical t-test results showed that had superior mechanical strength while exhibiting less variation. Flexural testing specimens average flexural increase 7%, modulus 7% specimen. addition reinforcement, multilayer energy demonstrated. addition, change electrical resistance layers measured during loading demonstrate structural health monitoring functionality.
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