Using orthogonal experimental method optimizing surface quality of CO2 laser cutting process for PMMA microchannels

Chen, Xueye; Li, Tiechuan; Zhai, Ke; Hu, Zengliang; Zhou, Mengde

doi:10.1007/s00170-016-8887-7

Cited by 47 publications

(12 citation statements)

References 14 publications

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“…After that, a through cut was performed on the sandwiched film using a 40 W CO 2 laser (Model: Fabool, SmartDIY Inc.), producing microchannels with an average width of 250 μm. The fabricated microchannel requires three laser passes at power of 1.2 W, speed of 150 mm/s, and focal distance of 50.8 mm. To increase the structural rigidity of the micromixer, a 3‐mm thick PMMA sheet was firmly clamped to the top of the central part.…”

Section: Methodsmentioning

confidence: 99%

Method for determining mixing index in microfluidics by RGB color model

Mahmud

Tamrin

2020

Asia-Pacific J Chem Eng

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Microfluidic mixing is a key process in miniaturized analysis system. Achieving adequate mixing performance is considerably difficult in microfluidic micromixer, as the flow is always associated with unfavorable laminar flow and dominated by molecular diffusion. The mixing performance of these micromixers are generally characterized as a function of mixing index based on dispersion (homogeneity) information, leading to either an overestimated or underestimated mixing index. This paper presents a new method for determining the mixing index of micromixers based on RGB color model by decoding mixing images to their respective red, green, and blue pixel intensities. Several digital composite images were used to perform initial benchmarking, and the proposed method accurately quantified the mixing index significantly better than previously adopted methods. The practicality of the method was further demonstrated by characterizing mixing of well‐known micromixers, namely T‐ and Y‐ micromixers, at varying Reynolds numbers of 5 ≤ Re ≤ 100. The results show that the mixing index decreases with the increase in Reynolds number, whereas the mixing index of the T‐micromixer was superior to that of Y‐micromixer, both agreeing well with the literature. The mixing index of these micromixers at varying Reynolds numbers of 5 ≤ Re ≤ 100 calculated using other methods were also compared and discussed. The proposed method is foreseen handy and robust in characterizing mixing in real time for gradient mixing in networked microchannels and multivortex mixing for the manipulation of fluids, particles, and biological substances.

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Section: Methodsmentioning

confidence: 99%

Method for determining mixing index in microfluidics by RGB color model

Mahmud

Tamrin

2020

Asia-Pacific J Chem Eng

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“…Therefore, it is necessary to focus efforts on considering additional functions. Assemblability is a case, thermo-fluid and thermoelectric applications (Lifton et al , 2014) (Chen et al , 2016), (Chen et al , 2017), (Chen et al , 2016), (Chen et al , 2016)) is another, personalization [(J. et al , 2016), (Deradjat and Minshall, 2017)], tolerances [(Xiao et al , 2017), (Panda et al , 2016)] and finishes [(Chohan and Singh, 2017), (Townsend et al , 2016)], are others.…”

Section: Analysis and Discussionmentioning

confidence: 99%

Design for additive manufacturing: a comprehensive review of the tendencies and limitations of methodologies

Taborda

Maury

Pacheco

2021

RPJ

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Purpose There are many investigations in design methodologies, but there are also divergences and convergences as there are so many points of view. This study aims to evaluate to corroborate and deepen other researchers’ findings, dissipate divergences and provide directing to future work on the subject from a methodological and convergent perspective. Design/methodology/approach This study analyzes the previous reviews (about 15 reviews) and based on the consensus and the classifications provided by these authors, a significant sample of research is analyzed in the design for additive manufacturing (DFAM) theme (approximately 80 articles until June of 2017 and approximately 280–300 articles until February of 2019) through descriptive statistics, to corroborate and deepen the findings of other researchers. Findings Throughout this work, this paper found statistics indicating that the main areas studied are: multiple objective optimizations, execution of the design, general DFAM and DFAM for functional performance. Among the main conclusions: there is a lack of innovation in the products developed with the methodologies, there is a lack of exhaustivity in the methodologies, there are few efforts to include environmental aspects in the methodologies, many of the methods include economic and cost evaluation, but are not very explicit and broad (sustainability evaluation), it is necessary to consider a greater variety of functions, among other conclusions Originality/value The novelty in this study is the methodology. It is very objective, comprehensive and quantitative. The starting point is not the case studies nor the qualitative criteria, but the figures and quantities of methodologies. The main contribution of this review article is to guide future work on the subject from a methodological and convergent perspective and this article provides a broad database with articles containing information on many issues to make decisions: design methodology; optimization; processes, selection of parts and materials; cost and product management; mechanical, electrical and thermal properties; health and environmental impact, etc.

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“…O 2 was used as the auxiliary gas. Chen et al in 2017 [11] aimed to analyze the effect of laser power, scanning speed, and processing times on the surface roughness of polymethyl-methacrylate microchannels with a CO 2 laser LCJG-1290 cutting process. Arun and Avanish in 2013 [12] investigated the laser cutting performance of a 1 mm duralumin sheet with the aim to improve the quality of the cut by simultaneously optimizing multiple performances such as cut edge surface roughness, kerf taper, and kerf width.…”

Section: Experimental Equipment and Procedures Of Base Holementioning

confidence: 99%

Study of Manufacturing Process of Holes in Aeroengine Heat Shield

Jiao

Liu

2019

International Journal of Aerospace Engineering

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The nickel-based superalloy GH3128 with high plasticity, high long-lasting creep strength, good resistance to oxidation and stamping, and good welding performance is widely used in aircraft engine heat shields. The many holes that need to be machined on the heat shield are not only small in diameter but also dense, and GH3128 as a typical hard-to-process material has the problems of large cutting force, high cutting temperature, and serious hardening. Therefore, poor dimensional accuracy and residual burrs have become the main factors that limit the processing efficiency and processing quality. So, a novel combination of manufacturing processes was proposed. Firstly, laser cutting technology was used to process the base hole in a GH3128 plate, followed by reaming, and finally, using a magnetic abrasive finishing effector to remove burrs formed during the first two steps. The whole drilling process of the heat shields fully meets the requirements of the technical parameters. This study provides new reference for manufacturing the holes of a heat shield and other similar porous parts.

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Using orthogonal experimental method optimizing surface quality of CO2 laser cutting process for PMMA microchannels

Cited by 47 publications

References 14 publications

Method for determining mixing index in microfluidics by RGB color model

Method for determining mixing index in microfluidics by RGB color model

Design for additive manufacturing: a comprehensive review of the tendencies and limitations of methodologies

Study of Manufacturing Process of Holes in Aeroengine Heat Shield

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