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Optimization of AWJM Process Parameters on 3D-Printed Onyx-Glass Fiber Hybrid Composite
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作者 Dharmalingam G Arun Prasad M +3 位作者 Deepak Panghal sachin salunkhe Siva kumar M Rathinasuriyan C 《Journal of Harbin Institute of Technology(New Series)》 CAS 2023年第2期84-98,共15页
Compared with conventional manufacturing methods, the additive manufacturing technique enhances mechanical properties. The present investigation of additive manufacturing technique is focused on delamination studies o... Compared with conventional manufacturing methods, the additive manufacturing technique enhances mechanical properties. The present investigation of additive manufacturing technique is focused on delamination studies of Onyx-Glass Fiber Hybrid Polymer Composite(OGFHPC) along with surface roughness properties during machining(drilling) of composites through abrasive water jet machining(AWJM). However, delamination is a major issue during machining of OGFHPC. In order to overcome these drawbacks, the fabrication of OGFHPC was carried out using fused deposition modeling(FDM) technology which is an additive manufacturing method with Mark forged Mark Two 3D-composite printer. The machinability studies were conducted for drilling operation through AWJM process with different abrasive mass flow rates, drilling diameters and traverse speeds. These drilling machinability process parameters were optimized through the design of experiments-Taguchi analysis followed by the analysis of variance(ANOVA) and validated through the Harmony Search Algorithm(HSA), Whale Optimization Algorithm(WOA) and Grey Wolf Optimization Algorithm(GWO). It was observed that minimum delamination and surface roughness of OGFHPC were optimized for AWJM at abrasive mass flow rates(450 g/min), drilling diameters(12 mm) and traverse speed rate(30 mm/min). 展开更多
关键词 Onyx-Glass composite fused deposition modeling AWJM DELAMINATION surface roughness Taguchi analysis
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Investigation on Effect of Radial and Extended Fins in PCM Heat Sink for LED Cooling
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作者 Thangamani Ramesh Ayyappan Susila Praveen +2 位作者 Praveen Bhaskaran Pillai sachin salunkhe J.Paulo Davim 《Journal of Harbin Institute of Technology(New Series)》 CAS 2023年第5期89-98,共10页
This work focuses on the efficiency of the LED acting as the heat sink containing Phase Change Material(PCM). Three different heat sink configurations(H-1, H-2, and H-3) are used in this study. Input power and the num... This work focuses on the efficiency of the LED acting as the heat sink containing Phase Change Material(PCM). Three different heat sink configurations(H-1, H-2, and H-3) are used in this study. Input power and the number of fins are altered to find their effect on junction temperatures, luminous flux, and thermal resistance. The junction temperature of heat sink H-3 with PCM decreased by 3.1 % when compared with heat sink devoid of PCM at 10 W. The thermal resistance of the heat sink H-3 is reduced by 18.2 % when compared to its counterpart devoid of PCM at 10 W. The luminous flux of the PCM filled heat sink H-3 is found to increase by 12.15 % against the PCM not filled heat sink H-1 at 10 W. The H-3 heat sink with PCM showed superior performance because of the enhanced natural convection and conduction in bulk PCM with fins, and with added high latent heat capacity of PCM. 展开更多
关键词 LED phase change material thermal resistance junction temperature luminous flux
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