The effect of conformal cooling channels on welding process in parts produced by additive manufacturing, laser powder bed fusion

Çalışkan, Cemal İrfan; Khan, Hamaid Mahmood; Özer, Gökhan; Waqar, Saad; Tütük, İbrahim

doi:10.1016/j.jmapro.2022.09.036

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…The consumption, of printed parts, print materials, 3 D printers, and software, has risen from US$13bn to US$29bn between 2016 and 2020 (Lluch-Cerezo et al , 2019; Ali et al , 2022). AM can deal with a wide range of complex forms and materials, including (polymers, metal and composites) (Çalışkan et al , 2022). As a result, AM has become extremely well-known in the industrial sector (Myers et al , 2022; Wanniarachchi et al , 2022).…”

Section: Introductionmentioning

confidence: 99%

Numerical investigations on mechanical properties of bio-inspired 3D printed geometries using multi-jet fusion process

Chand

Sharma

Trehan

et al. 2023

RPJ

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Purpose The purpose of this study is to find the best geometries among the cylindrical, enamel and honeycomb geometries based upon the mechanical properties (tensile test, compression test and shear test). Further this obtained geometry could be used to fabricate products like exoskeleton and its supporting members. Design/methodology/approach The present research focuses on the mechanical testing of cylindrical, enamel and honeycomb-shaped parts fabricated through multi-jet printing (MJP) process with a wall thickness of 0.26, 0.33, 0.4 and 0.66 mm. The polymer specimens (for tensile, compression and shear tests) were fabricated using a multi-jet fusion process. The experimental results were compared with the numerical modelling. Finally, the optimal geometry was obtained, and the influence of wall thicknesses on various mechanical properties (tensile, compression and shear) was studied. Findings In comparison to cylindrical, enamel structures the honeycomb structures required less time to fabricate and had lower tensile, compressive and shear strengths. The most efficient geometry for fully functional parts where tensile, compressive and shear forces are present during application – cylindrical geometry is preferred followed by enamel, and then honeycomb. It was found that as the wall thickness of various geometries was increased, their ability to withstand tensile, compressive and shear loads also enhanced. The enamel shape structure exhibits greater strain energy storage capacity than other shape structures for compressive loads, and the strength to resist the compressive load will be lower. In the case of cylindrical geometries for tensile loading, the resisting area toward the loading will be higher in comparison to honeycomb- and enamel-based structures. At the same time, the ability to store the stain energy is less. The results of the tensile, compression and shear load finite element analysis using ANSYS are in agreement with those of the experiments. Originality/value From the insight of literature review, it is found that a wide range of work is done on fused deposition modeling (FDM) process. But in comparison to FDM, the MJP provide the better dimensional accuracy and surface properties (Lee et al., 2020). Therefore, it is observed that past research works not incorporated the effect of wall thickness of the embedded geometries on mechanical properties of the part fabricated on MJP (Gibson, n.d.). Hence, in this work, effect of wall thickness on tensile, compression and shear strength is considered as the main factor for the honeycomb, enamel and cylindrical geometries.

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