Effects of various processing parameters on the mechanical properties and dimensional accuracies of Prosopis chilensis/PES composites produced by SLS

Abstract

Purpose The range of applications of the currently available biomass selective laser sintering (SLS) parts is limited and low-quality. This study aims to demonstrate the effects of the various processing parameters on the dimensional accuracy, bending strength, tensile strength, density and impact strength of the Prosopis chilensis/polyethersulfone (PES) composites (PCPCs) that were produced by SLS. The various processing parameters are laser power, scan speed, preheating temperature, scan spacing and layer thickness. In addition, the authors’ studied the effects of PCP particle size on the mechanical properties of the PCPCs. Design/methodology/approach The PCPC specimens were printed using an AFS SLS machine (additive manufacturing). The bending, tensile and impact strengths of the specimens were measured using a universal tensile tester. The dimensional accuracy of the bending specimens was determined by a Vernier caliper. The formability of the PCPC at various mixing ratios of the raw materials was earlier investigated by single-layer sintering experiments (Idriss et al., 2020b). The microstructure and particle distribution of the various PCPC specimens were analyzed by scanning electron microscopy (SEM). Findings The mechanical strengths (bending, tensile and impact strengths and density) and the dimensional accuracy of the PCPC SLS parts were directly and inversely proportional, respectively, to the laser power and preheating temperature. Furthermore, the mechanical strengths and dimensional accuracy of the PCPC SLS parts were inversely and directly proportional, respectively, to the scanning speed, scan spacing and layer thickness. Practical implications PCPC is an inexpensive, energy-efficient material that can address the drawbacks of the existing SLS parts. It is also eco-friendly because it lowers the pollution and CO2 emissions that are associated with waste disposal and SLS, respectively. The optimization of the processing parameters of SLS in this study produced high-quality PCPC parts with high mechanical strengths and dimensional accuracy that could be used for the manufacture of the roof and wooden floors, construction components and furniture manufacturing. Originality/value To the best of the authors’ knowledge, this study is among the first to elucidate the impact of the various SLS processing parameters on the mechanical properties and dimensional accuracy of the sintered parts. Furthermore, novel PCPC parts were produced in this study by SLS.

Study on selective laser sintering process and investment casting of rice husk/ Co-Polyamide (Co-PA hotmelt adhesive) composite

“…Therefore, through combined advantages results of RH content, 10 wt % is represent the optimum ratio in this study. The comparison of dimensional accuracy between the RHPA and related biomass composite SLS parts [30][31][32][33][34] is shown in Figure 10. From the comparison in Figure 10, the RHPA parts dimensional accuracy was superior to previously reported materials of wood-plastic composites, i.e., Bamboo flour/Thermoplastic, Cellulose/polyacid composite, and PCPC.…”

Face Shield 3D Printing User Experience Using Think Aloud Method During Pandemic in Malaysia

“…Producing a very high accuracy and fine finish, this technology has been using in dental and jewellery industry (Son et al, 2021) Powder bed fusion either using polymer or metal powder is a technology that thermal energy to melt and fused the powder to become an object. Known as selective laser sintering (SLS) is being use for mechanical parts production due to its material strength (Li et al, 2022).…”

“…Coded as SARS-CoV-2 is a β-coronavirus which is enveloped non-segmented positive-sense Ribonucleic acid (RNA) virus (subgenus sarbecovirus, Orthocoronavirinae subfamily) (Zhu et al 2020). It was confirmed that this virus originated from bats but how it was transmitted to humans is still unknown (Li et al 2022). As of 20 July 2021, 192,190,693 cases were detected, and the death toll has reached 4,123,780.…”