Mechanical reliability of short carbon fiber reinforced ABS produced via vibration assisted fused deposition modeling. Issue 9 (12th November 2018)

• Record Type: Journal Article
• Authors: Keleş, Özgür; Anderson, Eric H.; Huynh, Jimmy
• Is Part Of: Rapid prototyping journal. Volume 24:Issue 9(2018)
• Page Start: 1572
• Page End: 1578
• Publication Date: 2018-11-12
• Subjects: 3D printing -- Mass customization -- Fused filament fabrication -- Mass production -- Porous materials; Engineering design -- Periodicals; 620.004205
• DOI: 10.1108/RPJ-12-2017-0247
• Languages: English
• ISSNs: 1355-2546

Abstract

Abstract : Purpose: Mechanical reliability (variations in mechanical properties) of fused deposition modeled (FDMed) short-fiber-reinforced composites are unknown, which limits wider and safer use of these composites. Accordingly, this paper aims to investigate the mechanical reliability of FDMed model material short-carbon-fiber-reinforced acrylonitrile butadiene styrene (SCFR-ABS). A new vibration-assisted FDM (VA-FDM) process was used to reduce porosity. Design/methodology/approach: Tensile tests were performed on FDMed SCFR-ABS produced with and without vibrations. Weibull analysis was performed to quantify the variation in fracture strength, tensile strength, strain at break and strain at tensile strength. Findings: Introduction of vibrations to the extrusion head during FDM decreased the inter-bead porosity in SCFR-ABS and thus improved elastic modulus, toughness, fracture strength, tensile strength and strain at break. Weibull modulus of fracture strength increased from 25 to 57 with vibrations. Practical implications: The reported Weibull analysis offers a practical design guideline to predict failure rates at specific service stresses. Originality/value: A detailed Weibull analysis of the variations in the mechanical properties of FDMed SCFR-ABS was performed for the first time. A new vibration-assisted FDM process was reported to reduce inter-bead porosity in FDMed composites.