###### Abstract
Laser assisted AM technology utilized glass fiber (GF)-polypropylene (PP) prepreg composites for manufacturing test coupons by using laser assisted bonding and laser cutting [6]. GF/PP prepreg composites were added in successive layers, and 3D model was chopped into various 2D slices with each slice then sliced using associated 2D slice [6]. This process was repeated using a layer-by-layer approach to achieve a complete solid laminate in 3D model as defined per CAD file [6]. A prepreg was used as the first and base layer in the article as a substitute for the narrow cut tape for higher quality bonding for the solid laminate [6]. Laser and compaction roller were used for layer-by-layer placement of the tape strips. The CO\({}_{2}\) laser (with 100 W max. power) was emitted at the interface of two layers with 18\({}^{\circ}\) angle from the base prior to putting pressure via compaction roller to combine the prepreg [6]. The roller, laser beam, and mirrors were stationary in tape placement process, and the prepreg was provided under the compaction roller utilizing a motorized stage [6]. Process parameters for feeding the tape below the roller were laser power of 22-28 \(W\) and the speed of stage movement of 1-4 mm per second [6]. The fine shape was cut using full spectrum laser with 90W maximum power after getting a 2D shape profile [6]. The laser cutting process parameters of 31.5 W power, 70 mm/s cutting speed, and 1 mm spot diameter, which involved a 3D printed article to move back and forth between two stations [6]. While the microstructure, characterized by SEM, showed superior bonding of prepreg layers with no visible void or gap, which is substantially improved compared to other AM techniques such as FDM, the multifunctional properties on the 3D printed continuous carbon fiber solid laminate test coupons were not addressed [6]. This paper was limited to evaluation of the monofunctional property and its structural performance. Composites made up of polyamide 6 (PA-6) polymer films and conductive polyaniline (PANI) particles were chemically investigated by in-situ polymerization of aniline inside the PA-6 matrix at ambient temperature for surface electrical conductivity evaluation [7]. This study measured the frequency dependence of permittivity of these antistatic polymer films [7]. Surface electrical conductivity was measured by utilizing the potential decay technique [7]. While it was found that the improved surface electrical conductivity initiated by percolation of PANI phase in the surface layer of PA-6 films, this study did not address the coupled flexural-electrical evaluation of 3D printed multifunctional composites [7]. Mechanical and electrical properties of polyamide 6/graphene nanoplatelet composites manufactured using melt processing via twin-screw extrusion were evaluated [8]. Graphene nanoplatelets (GNPs) were used to examine the influence of particle dimensions on composite properties [8]. While the electrical conductivity and the increase in the weight fraction of GNPs were directly proportional that resulted in an increase of six orders of magnitude on the addition of up to 15 wt% GNPs, this study did not address multifunctional properties (coupled flexural-electrical) evaluation of 3D printed multifunctional carbon fiber composites [8]. The electrical, thermal, and mechanical properties of additively manufactured PA6 nanocomposites were investigated for electrostatic discharge applications [9]. Fused deposition modeling (FDM) was used for test samples fabrication, and it was found that the flexural properties were improved by 3 wt% addition of carbon nanofiber (CNF) with no enhancement observed at 5 wt% CNF [9]. While the volume resistivity of the PA6 matrix was significantly reduced due to the addition of 3 wt% and 5 wt% CNF which seemed to have potential use for static discharge products, this study did not cover the multifunctional properties of 3D printed continuous carbon fiber composites [9].