The proceedings contain 228 papers. The special focus in this conference is on appliedscience and precisionengineering. The topics include: Effects of grain size and lubricating conditions on micro forward and backw...
ISBN:
(纸本)9783037859476
The proceedings contain 228 papers. The special focus in this conference is on appliedscience and precisionengineering. The topics include: Effects of grain size and lubricating conditions on micro forward and backward hollow extrusion of brass;direct heating billet within die during hot forging process;using soft material as die during hot forging;transparent conductive oxide GZO thin films by Sol-Gel process;photo-electronic properties of titanium dioxide nano thin films;step-stress accelerated degradation testing of NBR sealing ring;study the rheological property of gel abrasives in magnetic abrasive finishing;experiment on intermittent gas jet assisted modulated fiber laser drilling;temperature effect on mechanical properties of aluminum film;thermoelectric properties of transition metal deposited MWCNT buckypaper;a study on measurement of photoplethysmograph using a Smartphone camera;compound optical film using gray scale mask embedded with micro-voids;design of secondary optical element for a two-reflector solar concentrator;integrated multi-object Taguchi method with optical design for contact lenses;improvement on Zhang's camera calibration;video matching by one-dimensional PSNR profile;design of a magnetic gear set with low torque ripple;heat transfer of oscillating fluid through finned heat sink with top bypass clearance;reducing cogging force of a permanent magnet transverse flux linear synchronous motor;design and optimization on active engine mounting systems for vibration isolation;harmonic analysis and filter design for the light rail transit systems;modeling of a shape memory alloy beam and its stochastic chaos;parametric study of a micromixer with convergent-divergent sinusoidal walls;design and manufacturing of drug eluting depot stents with micro-sized drug reservoirs;finite-element analysis of the magnetic field in a magnetic gear mechanism;kinematic analysis of an 8-speed bicycle transmission hub;ground vibration characteristics for high-speed
To solve the problem of inadequate amplification ratio within the precision positioning platforms, a novel Z-shaped flexure hinge (ZFH) is proposed firstly in this paper. Meanwhile, a 2DOF XY precision positioning pla...
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To solve the problem of inadequate amplification ratio within the precision positioning platforms, a novel Z-shaped flexure hinge (ZFH) is proposed firstly in this paper. Meanwhile, a 2DOF XY precision positioning platform which realizes secondary amplification with bridge-shaped mechanisms and novel ZFHs is designed. The novel ZFH and the platform are analyzed by static modeling with compliance matrix method and the principle of force equilibrium. The simulation results show that the errors in both stiffness and amplification ratios of the platform are within 7%, and the performance of novel ZFH is improved by 50.70%. Finally, A prototype of the platform is fabricated for performance testing. The experimental results well validate the superior performance of the platform and novel ZFH.
To address the critical demand for on-machine metrology (OMM) in precision optics fabrication, a unique dualmode OMM system has been developed. By integrating polarization-based snapshot motionless phase shifting, thi...
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To address the critical demand for on-machine metrology (OMM) in precision optics fabrication, a unique dualmode OMM system has been developed. By integrating polarization-based snapshot motionless phase shifting, this OMM system enables the measurement of both surface form and roughness under laser interferometry mode and LED interference microscopy mode. Its compact and dual-mode design makes it ideal for on-machine tool alignment within single-point diamond turning (SPDT) machines, without the need to remove parts. To enhance its OMM capabilities, a defocus-model-based least square (L2) regression fitting algorithm and a convex-hullbased L2 regression are proposed to achieve precise retrieval of deviations in X and Y axes with robustness. Additionally, a high-precision calibration method for testing system misalignment, based on the Zernike highorder approximation model, is applied to relax the OMM system alignment requirements. As a result, rapid tool alignment is achieved without stringent alignment needs. The proposed OMM eliminates the necessity for offline metrology feedback during the tool alignment process and increases process efficiency by at least 50 %. Furthermore, it eliminates errors caused by removing, repositioning, and rebalancing the part, offering a novel alternative solution to address the critical demand for SPDT tool alignment and surface characterization.
With the rapid development of optical technology, opto-mechanical systems are widely applied in space exploration, high-energy laser applications, and ultra-precision laser processing and measurement. The precise asse...
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With the rapid development of optical technology, opto-mechanical systems are widely applied in space exploration, high-energy laser applications, and ultra-precision laser processing and measurement. The precise assembly of optical components is a key factor in ensuring the performance of opto-mechanical systems. Therefore, improving the assembly performance of optical systems has become one of the hot topics in optical research. The research on the assembly performance of existing opto-mechanical systems primarily emphasizes predictive model construction, optimization of structural stiffness, assembly process planning, and automation equipment development. These studies typically address only one or a few specific issues and lack a systematic review of the overall development status and technical interrelations of high-performance assembly technologies for opto-mechanical systems. Moreover, technology that integrates "design, assembly, measurement, and adjustment" to enhance optomechanical systems has yet to be developed. Centered on two key performance metrics of opto-mechanical systems-pointing accuracy and surface distortion, this paper reviews the theoretical frameworks and technical progress of related predictive models, addressing three aspects: current research status, error analysis, and quantitative performance description methods. Secondly, from the perspectives of optimization design and adjusting processes, this paper summarizes the main technical approaches for improving optical performance, comparing, and applying deterministic and uncertainty optimization methods for optical system error factors, and analyzes their applicability and limitations. Subsequently, this paper focuses on the development status of intelligent assembly and adjustment technologies and analyzes their role in improving assembly accuracy from two aspects: assembly processes and assembly equipment. Finally, this paper concludes by summarizing the findings and envisioning future d
The proceedings contain 40 papers. The topics discussed include: application of Buluhpring bamboo for flexural reinforcement in concrete beam;analysis of structural response and performance of educational facility bui...
The proceedings contain 40 papers. The topics discussed include: application of Buluhpring bamboo for flexural reinforcement in concrete beam;analysis of structural response and performance of educational facility buildings using linear time history and nonlinear pushover methods in high seismicity areas;supply chain optimization for biomass cofiring in 2x110 MW steam-based power plant;the influence of jatropha-waste cooking oil biodiesel physical properties on spray angle and fuel efficiency in diesel engines;effect of temperature and solar radiation on electrical power generated by 50WP monocrystalline photovoltaic panels at the south Tangerang climatology station;comparative analysis of product yield and chemical composition in sugarcane bagasse pyrolysis with and without iron catalysis;and investigation of blade number effect on the centrifugal blower as a small-scale water turbine.
Recently, with increased use of mobile phones, it has transformed into a multibillion-dollar Short Message Service or SMS. However, the drop in the cost of messaging services has led to an increased number of unsolici...
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