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Review of small aspheric glass lens molding technologies

Shaohui YIN,Hongpeng JIA,Guanhua ZHANG,Fengjun CHEN,Kejun ZHU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 66-76 doi: 10.1007/s11465-017-0417-2

Abstract: As an advanced manufacturing technology, the glass lens molding process has been recognized as a low-costprofile deviation of the glass lens are greatly affected by various key technologies for glass lens molding, including glass and mold-die material forming, mold-die machining, and lens molding.These key technical factors, which affect the quality of the glass lens molding process, are systematicallytechnical bottlenecks and problems, as well as to predict the potential applicability of glass lens molding

Keywords： aspheric glass lens     mold-die manufacturing     lens molding     molding process simulation    

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Microcellular injection molding process for producing lightweight thermoplastic polyurethane with customizable

Thomas ELLINGHAM, Hrishikesh KHARBAS, Mihai MANITIU, Guenter SCHOLZ, Lih-Sheng TURNG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 96-106 doi: 10.1007/s11465-018-0498-6

Abstract:

A three-stage molding process involving microcellular injection molding with core retraction and an

Keywords： thermoplastic polyurethane     microcellular injection molding     cavity expansion     compressive strength     hysteresis    

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Three-dimensional numerical simulation for plastic injection-compression molding

Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 74-84 doi: 10.1007/s11465-018-0490-1

Abstract:

Compared with conventional injection molding, injection-compression molding can mold optical partsHowever, the melt flow process in a closed cavity becomes more complex because of the moving cavity boundaryIn this study, a 3D simulation method was developed for injection-compression molding.The melt flow and pressure distribution in the cavity were investigated by using the proposed simulationmethod and compared with those of injection molding.

Keywords： injection-compression molding     simulation     injection molding     melt flow     cavity pressure    

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Recent advancements in optical microstructure fabrication through glass molding process

Tianfeng ZHOU,Xiaohua LIU,Zhiqiang LIANG,Yang LIU,Jiaqing XIE,Xibin WANG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 46-65 doi: 10.1007/s11465-017-0425-2

Abstract: This paper presents an overview of optical microstructure fabrication through glass molding and highlightsthe applications of optical microstructures in mold fabrication and glass molding.Moreover, the latest advancements in glass molding technologies are detailed, including new mold materialsand their fabrication methods, viscoelastic constitutive modeling of glass, and microstructure moldingprocess, as well as ultrasonic vibration-assisted molding technology.

Keywords： optical microstructure     microgroove     microlens     glass molding process     single-point diamond cutting    

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Intelligent methods for the process parameter determination of plastic injection molding

Huang GAO, Yun ZHANG, Xundao ZHOU, Dequn LI

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 85-95 doi: 10.1007/s11465-018-0491-0

Abstract:

Injection molding is one of the most widely used material processing methods in producing plasticThe determination of process parameters is important in obtaining qualified products and maintainingThis article reviews the recent studies and developments of the intelligent methods applied in the processparameter determination of injection molding.A framework of process parameter determination is proposed after comprehensive discussions.

Keywords： injection molding     intelligent methods     process parameters     optimization    

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density measurement for plastic injection molding via ultrasonic technology

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0714-2

Abstract: Density variation during the injection molding process directly reflects the state of plastic melt andcontains valuable information for process monitoring and optimization.Experiments with different process conditions are conducted, including different melt temperature, injectionmeasurement, non-destructive, high accuracy, low cost, and is of great application value for the injection molding

Keywords： ultrasonic measurement     melt density     in-situ measurement     injection molding    

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Trends of process parameters impact on forming quality of part during the gas-assisted injection molding

Qiu Shuijin,Jiang Shaofei,Chai Guozhong,Lu Congda

Strategic Study of CAE 2009, Volume 11, Issue 4,   Pages 84-90

Abstract:

This paper investigates process optimization for the specific rib withsection s-3 during the gas-assisted injection molding firstly, which is to get relationship betweenprocess parameters and quality evaluations,based on the Taguchi experimental design.Then, in the light of the above process conditions, a comparative study of four different cross-sectionribs are done, to investigate trend of the impact of the single process parameter on forming quality

Keywords： gas-assisted injection molding     rib     Taguchi experiment design    

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Dynamic modelling and simulation of a post-combustion CO capture process for coal-fired power plants

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 198-209 doi: 10.1007/s11705-021-2057-7

Abstract: Modelling and simulation provide a low-cost opportunity to evaluate performances and guide flexible operationfirst-principle post-combustion capture models are computationally expensive, which limits their use in real time processsimulation and control.model and then the dominant factor is used to fit properties and simplify the chemical and physical process

Keywords： CO2 capture     post-combustion capture     simulation     dominant factor    

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Numerical simulation and experimental research on the wheel brush sampling process of an asteroid sampler

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0732-0

Abstract: brush, the contact dynamics model between particles and sampling wheel brushes is established and a simulationand experimental verification of the sampling process are conducted.of the sampling process.the dynamic torque sensor is used to test the torque change of the wheel brush during the sampling processMoreover, a numerical simulation analysis of the sampling process of the wheel brush sampler in a microgravity

Keywords： asteroid sampling     wheel brush sampler     discrete element method     parameter calibration     experimental research    

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Precision glass molding: Toward an optimal fabrication of optical lenses

Liangchi ZHANG,Weidong LIU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 3-17 doi: 10.1007/s11465-017-0408-3

Abstract: Precision glass molding (PGM) has thus been developed to realize an efficient manufacture of such opticalFor example, a PGM process must be carried out within the super-cooled region of optical glass aboveThis makes a PGM process sensitive to its molding temperature.consideration from mold material selection, property and deformation characterization of optical glass to process

Keywords： precision glass molding     optical lens     constitutive modeling     optimization     manufacturing chain     Industry    

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Synergistic optimization framework for the process synthesis and design of biorefineries

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 251-273 doi: 10.1007/s11705-021-2071-9

Abstract: The conceptual process design of novel bioprocesses in biorefinery setups is an important task, whichWe propose a novel framework incorporating superstructure optimization and simulation-based optimizations synergistic effects by sequentially performing superstructure optimization to determine candidate processtopologies and simulation-based optimization to consolidate the process design under uncertainty offer

Keywords： biotechnology     surrogate modelling     superstructure optimization     simulation-based optimization     process    

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Monte Carlo simulation of the diffusion-limited aggregating process of particle suspension systems

Jiajing XU, Lin ZHANG, Yongjian TANG, Wei DAI, Wenwen SHAN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 270-274 doi: 10.1007/s11705-009-0273-7

Abstract: The aggregating process of particle suspension systems is a very universal phenomena and crucial forIn this paper, the aggregating process was simulated with off-lattice diffusion-limited cluster-cluster

Keywords： cluster-cluster aggregation     distribution function     relationship     process     universal    

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Process simulation and economic analysis of reactor systems for perfluorinated compounds abatement without

Boreum Lee,Sunggeun Lee,Ho Young Jung,Shin-Kun Ryi,Hankwon Lim

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 4,   Pages 526-533 doi: 10.1007/s11705-016-1590-2

Abstract: eliminating toxic HF effluent and their feasibility was studied at various temperatures with a commercial processBased on process simulation results, preliminary economic analysis shows that cost savings of 12.37%

Keywords： perfluorinated compounds (PFCs)     CF4     process simulation     economic analysis    

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Decision support for the development, simulation and optimization of dynamic process models

Norbert Asprion, Roger Böttcher, Jan Schwientek, Johannes Höller, Patrick Schwartz, Charlie Vanaret, Michael Bortz

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 210-220 doi: 10.1007/s11705-021-2046-x

Abstract: Simulation is besides experimentation the major method for designing, analyzing and optimizing chemicalThe ability of simulations to reflect real process behavior strongly depends on model quality.Validation and adaption of process models are usually based on available plant data.Using such a model in various simulation and optimization studies can support the process designer in

Keywords： decision support     multicriteria optimization     model validation     dynamic model     sensitivity analysis    

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Integration of molecular dynamic simulation and free volume theory for modeling membrane VOC/gas separation

Bo Chen, Yan Dai, Xuehua Ruan, Yuan Xi, Gaohong He

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 2,   Pages 296-305 doi: 10.1007/s11705-018-1701-3

Abstract: Gas membrane separation process is highly unpredictable due to interacting non-ideal factors, such asAlthough molecular dynamic (MD) simulation can mimic those complex effects, it cannot precisely predictby combining the MD simulation with the free volume theory.Small scale MD simulation and pure gas permeation data are employed to correlate pressure-irrelevantprocess.

Keywords： membrane vapor separation     membrane process modeling     process engineering     free volume theory     volatile organic    

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Title Author Date Type Operation

Review of small aspheric glass lens molding technologies

Shaohui YIN,Hongpeng JIA,Guanhua ZHANG,Fengjun CHEN,Kejun ZHU

Journal Article

Microcellular injection molding process for producing lightweight thermoplastic polyurethane with customizable

Thomas ELLINGHAM, Hrishikesh KHARBAS, Mihai MANITIU, Guenter SCHOLZ, Lih-Sheng TURNG

Journal Article

Three-dimensional numerical simulation for plastic injection-compression molding

Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI

Journal Article

Recent advancements in optical microstructure fabrication through glass molding process

Tianfeng ZHOU,Xiaohua LIU,Zhiqiang LIANG,Yang LIU,Jiaqing XIE,Xibin WANG

Journal Article

Intelligent methods for the process parameter determination of plastic injection molding

Huang GAO, Yun ZHANG, Xundao ZHOU, Dequn LI

Journal Article

density measurement for plastic injection molding via ultrasonic technology

Journal Article

Trends of process parameters impact on forming quality of part during the gas-assisted injection molding

Qiu Shuijin,Jiang Shaofei,Chai Guozhong,Lu Congda

Journal Article

Dynamic modelling and simulation of a post-combustion CO capture process for coal-fired power plants

Journal Article

Numerical simulation and experimental research on the wheel brush sampling process of an asteroid sampler

Journal Article

Precision glass molding: Toward an optimal fabrication of optical lenses

Liangchi ZHANG,Weidong LIU

Journal Article

Synergistic optimization framework for the process synthesis and design of biorefineries

Journal Article

Monte Carlo simulation of the diffusion-limited aggregating process of particle suspension systems

Jiajing XU, Lin ZHANG, Yongjian TANG, Wei DAI, Wenwen SHAN,

Journal Article

Process simulation and economic analysis of reactor systems for perfluorinated compounds abatement without

Boreum Lee,Sunggeun Lee,Ho Young Jung,Shin-Kun Ryi,Hankwon Lim

Journal Article

Decision support for the development, simulation and optimization of dynamic process models

Norbert Asprion, Roger Böttcher, Jan Schwientek, Johannes Höller, Patrick Schwartz, Charlie Vanaret, Michael Bortz

Journal Article

Integration of molecular dynamic simulation and free volume theory for modeling membrane VOC/gas separation

Bo Chen, Yan Dai, Xuehua Ruan, Yuan Xi, Gaohong He

Journal Article