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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:

Aspheric lens can eliminate spherical aberrations, coma, astigmatism, field distortions, and otherThe demand for aspheric lens has increased in recent years because of its advantageous use in the electronicsand high-efficiency manufacturing technology for machining small-diameter aspheric lens for industrialHowever, the residual stress and profile deviation of the glass lens are greatly affected by variouskey technologies for glass lens molding, including glass and mold-die material forming, mold-die machining

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

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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: time consuming to use machining processes, such as grinding, polishing and lapping, to produce optical glassPrecision 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 aboveits glass transition temperature, in which the material has an unstable non-equilibrium structure.Such complexity often leads to residual stresses and shape distortion in a lens molded, causing unexpected

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

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An investigation into the properties of ternary and binary cement pastes containing glass powder

Marcelo Frota BAZHUNI, Mahsa KAMALI, Ali GHAHREMANINEZHAD

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 741-750 doi: 10.1007/s11709-018-0511-5

Abstract: The properties of binary and ternary cement pastes containing glass powder (GP) were examined.

Keywords： cement paste     glass powder     pozzolanic reaction     supplementary cementitious material    

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Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 376-382 doi: 10.1007/s11709-010-0086-2

Abstract: Pre-tensioned high strength trusses using alloy steel bar are widely used as glass wall supporting systemsThe breakage of glass panes in this type of system occurs occasionally, likely to be due to error indesign and analysis in addition to other factors like glass impurity and stress concentration aroundIt is not uncommon to see many similar glass wall systems fail in the wind load test chambers under a

Keywords： tension system     glass wall     nonlinear analysis     pre-tensioning     second-order analysis    

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Progress of three-dimensional macroporous bioactive glass for bone regeneration

Lijun JI, Yunfeng SI, Ailing LI, Wenjun WANG, Dong QIU, Aiping ZHU

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 470-483 doi: 10.1007/s11705-012-1217-1

Abstract: Bioactive glasses (BGs) are ideal materials for macroporous scaffolds due to their excellent osteoconductive, osteoinductive, biocompatible and biodegradable properties, and their high bone bonding rates. Macroporous scaffolds made from BGs are in high demand for bone regeneration because they can stimulate vascularized bone ingrowth and they enhance bonding between scaffolds and surrounding tissues. Engineering BG/biopolymers (BP) composites or hybrids may be a good way to prepare macroporous scaffolds with excellent properties. This paper summarizes the progress in the past few years in preparing three-dimensional macroporous BG and BG/BP scaffolds for bone regeneration. Since the brittleness of BGs is a major problem in developing macroporous scaffolds and this limits their use in load bearing applications, the mechanical properties of macroporous scaffolds are particularly emphasized in this review.

Keywords： bioactive glass     biopolymer     bone regeneration     macroporous scaffolds     tissue engineering    

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Influence of damages on static behavior of single-layer cable net supported glass curtain wall: full-scale

Gang SHI, Yongjiu SHI, Yuanqing WANG, Yongzhi ZUO, Xiaohao SHI, Zaoyang GUO,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 383-395 doi: 10.1007/s11709-010-0074-6

Abstract: The single-layer cable net supported glass curtain wall has been applied in many building structuresstudy the influence of such damages on the static behavior of the single-layer cable net supported glassThe stiffness contribution of glass panels to the single-layer cable net supported glass curtain wallThe stiffness contribution of glass panels increases with the load increase.Under the same loading condition, the stiffness contribution of glass panels to the damaged structure

Keywords： single-layer plane cable net supported glass curtain wall     damage     cable prestress loss     cable anchorageend failure     stiffness contribution of glass panels    

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Recycled glass replacement as fine aggregate in self-compacting concrete

Yasser SHARIFI, Mahmoud HOUSHIAR, Behnam AGHEBATI

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 419-428 doi: 10.1007/s11709-013-0224-8

Abstract: the concrete industry has adopted a number of methods to achieve this goal by replacement of waste glassTherefore, replacement of waste glass with fine aggregate in SCC should deeply be investigated comparedThe aim of the present study is to investigate the effect of glass replacement with fine aggregate onshown to decrease when the content of waste glass is increased.be produced SCC with waste glass as fine aggregate in a standard manner.

Keywords： Self Compacting Concrete (SCC)     recycle glass     fine aggregate     fresh and hardened properties    

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Characterization of aerodynamic performance of wind-lens turbine using high-fidelity CFD simulations

Islam HASHEM, Aida A. HAFIZ, Mohamed H. MOHAMED

Frontiers in Energy 2022, Volume 16, Issue 4,   Pages 661-682 doi: 10.1007/s11708-020-0713-0

Abstract: Wind-lens turbines (WLTs) exhibit the prospect of a higher output power and more suitability for urbanThe wind-lens typically comprises a diffuser shroud coupled with a flange appended to the exit peripheryIn this paper, the aerodynamic performance of the wind-lens is computationally assessed using high-fidelitythat the proposed methodology could be able to precisely predict the aerodynamic behavior of the wind-lensThe results affirm that wind-lens with cycloidal profile yield an augmentation of about 58% increase

Keywords： shroud     diffuser-augmented wind turbine (DAWT)     Betz limit     aerodynamics     computational fluid dynamics (CFD)    

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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.The glass-mold interface friction and adhesion are also discussed.Moreover, the latest advancements in glass molding technologies are detailed, including new mold materialsand their fabrication methods, viscoelastic constitutive modeling of glass, and microstructure molding

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

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Extended Hemispherical Lens and Its Applications in Millimeter Wave Focal Imaging Systems

Sun Zhongliang,Dou Wenbin

Strategic Study of CAE 2000, Volume 2, Issue 3,   Pages 42-47

Abstract: This paper analyzes extended hemispherical lens, which can be used in focal imaging.lens.of the lens is analyzed by using Stratton-Chu formula and ray tracing method.It will provide much information about the imaging performance of the lens.Furthermore, the lens can be used to couple with a quasi-optical system.

Keywords： millimeter waves     antennas     imaging     extended hemispherical lens    

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Assessment of glass fiber-reinforced polyester pipe powder in soil improvement

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 742-753 doi: 10.1007/s11709-021-0732-x

Abstract: This study investigates the use of glass fiber-reinforced polyester (GRP) pipe powder (PP) for improving

Keywords： shallow foundation     sandy soil     bearing capacity     soil improvement     pipe powder    

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Mechanical properties of steel, glass, and hybrid fiber reinforced reactive powder concrete

Atheer H.M. ALGBURI, M. Neaz SHEIKH, Muhammad N.S. HADI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 998-1006 doi: 10.1007/s11709-019-0533-7

Abstract: Steel fibers, glass fibers, and steel-glass hybrid fibers were used to prepare the FR-RPC.Glass fibers of 13 mm length and 1.3 mm diameter were used to prepare the glass fiber-reinforced RPCThe hybrid fiber-reinforced RPC (HFR-RPC) was prepared by mixing 0.9% steel fibers and 0.6% glass fibers

Keywords： reactive powder concrete     steel fiber     glass fiber     hybrid fiber    

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Fatigue shear performance of concrete beams reinforced with hybrid (glass-fiber-reinforced polymer+ steel

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 576-594 doi: 10.1007/s11709-021-0728-6

Abstract: Reinforced concrete beams consisting of both steel and glass-fiber-reinforced polymer rebars exhibitFor specimens that failed by fatigue shear, all the glass-fiber-reinforced polymer stirrups and someThe fatigue strength of the glass-fiber-reinforced polymer stirrups in the specimens was considerablytests on the glass-fiber-reinforced polymer bar, and the failure modes were different.Glass-fiber-reinforced polymer stirrups were subjected to fatigue tension and shear, and failed owing

Keywords： fatigue     shear     hybrid stirrups     hybrid reinforcement     fiber-reinforced polymer    

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Realization of energy-saving glass using photonic crystals

Yen-Hsiang CHEN, Li-Hung LIAO, Yu-Bin CHEN

Frontiers in Energy 2018, Volume 12, Issue 1,   Pages 178-184 doi: 10.1007/s11708-018-0523-9

Abstract: This work successfully developed an energy-saving glass with wavelength selectivity.The glass is composed of a SiO substrate and two layers of three-dimensional photonic crystals.The glass then possesses dual photonic band gaps in the near-infrared region to suppress penetrationExperimental results show that the energy-saving glass decreases temperature increment in a mini-houseMoreover, the temperature after thermal equilibrium is lower than that inside a counterpart using ordinary glass

Keywords： energy-saving glass     photonic crystals     polystyrene spheres     self-assembly    

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Analysis and comparison of laser cutting performance of solar float glass with different scanning modes

Wenyuan LI, Yu HUANG, Youmin RONG, Long CHEN, Guojun ZHANG, Zhangrui GAO

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 97-110 doi: 10.1007/s11465-020-0600-8

Abstract: Cutting quality and efficiency have always been important indicators of glass laser cutting.These modes can achieve high-performance hole cutting of thick solar float glass using a 532-nm nanosecondThe mechanism of the glass laser cutting under these two different scanning modes has been described.The range of glass processing that can be achieved in the concentric circle scanning mode is wider thanthat the concentric circle scanning mode shows evident advantages in the performance of solar float glass

Keywords： laser cutting     solar float glass     scanning mode     surface quality     cutting efficiency    

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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

Precision glass molding: Toward an optimal fabrication of optical lenses

Liangchi ZHANG,Weidong LIU

Journal Article

An investigation into the properties of ternary and binary cement pastes containing glass powder

Marcelo Frota BAZHUNI, Mahsa KAMALI, Ali GHAHREMANINEZHAD

Journal Article

Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Journal Article

Progress of three-dimensional macroporous bioactive glass for bone regeneration

Lijun JI, Yunfeng SI, Ailing LI, Wenjun WANG, Dong QIU, Aiping ZHU

Journal Article

Influence of damages on static behavior of single-layer cable net supported glass curtain wall: full-scale

Gang SHI, Yongjiu SHI, Yuanqing WANG, Yongzhi ZUO, Xiaohao SHI, Zaoyang GUO,

Journal Article

Recycled glass replacement as fine aggregate in self-compacting concrete

Yasser SHARIFI, Mahmoud HOUSHIAR, Behnam AGHEBATI

Journal Article

Characterization of aerodynamic performance of wind-lens turbine using high-fidelity CFD simulations

Islam HASHEM, Aida A. HAFIZ, Mohamed H. MOHAMED

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

Extended Hemispherical Lens and Its Applications in Millimeter Wave Focal Imaging Systems

Sun Zhongliang,Dou Wenbin

Journal Article

Assessment of glass fiber-reinforced polyester pipe powder in soil improvement

Journal Article

Mechanical properties of steel, glass, and hybrid fiber reinforced reactive powder concrete

Atheer H.M. ALGBURI, M. Neaz SHEIKH, Muhammad N.S. HADI

Journal Article

Fatigue shear performance of concrete beams reinforced with hybrid (glass-fiber-reinforced polymer+ steel

Journal Article

Realization of energy-saving glass using photonic crystals

Yen-Hsiang CHEN, Li-Hung LIAO, Yu-Bin CHEN

Journal Article

Analysis and comparison of laser cutting performance of solar float glass with different scanning modes

Wenyuan LI, Yu HUANG, Youmin RONG, Long CHEN, Guojun ZHANG, Zhangrui GAO

Journal Article