Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C Impact Factor & Information

Journal description

Current impact factor: 0.16

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 0.163
2012 Impact Factor 0.274
2011 Impact Factor 0.548
2009 Impact Factor 0.548

Impact factor over time

Impact factor
Year

Additional details

5-year impact 0.30
Cited half-life 4.20
Immediacy index 0.00
Eigenfactor 0.00
Article influence 0.10
ISSN 0257-9731

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Having analyzed the main random variables which affected the synchronization accuracy, this paper presents a time synchronization method with high precision of the networked CNC system based on RTE which combines the IEEE 1588 protocol with a ring topology. This synchronization method adopts the instant fixed-time forwarding mechanism increasing the synchronization frequency and high frequency measurement clock to decrease the measurement error, and uses the DPLL and the PI controller for drift compensation and offset compensation respectively to reduce the frequency drift of crystal oscillator. Meanwhile the algorithm of the DPLL and the PI controller are analyzed respectively. Finally, in this paper an experimental platform is built, and some experiments are conducted to verify the performance of the time synchronization method. The experimental results demonstrate that the synchronization method achieves high synchronization accuracy.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 04/2015; 36(2):91-105.
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    ABSTRACT: Based on the traditional active steering system, a novel active steering (AFS) system integrated with electric power steering (EPS) function is introduced, which can achieve the functions of both active steering and electric power steering. In view of the interference from road random signal and sensor noise in the novel active steering system, a time-delay Ho control model of the novel active steering system is built. With satisfying steering feel, good robust performance and steering stability being the control objectives, the time-delay H-infinity controller for the novel AFS system is designed. The simulation results show that the novel AFS system with time-delay H-infinity control strategy can attenuate the road interference quickly, and there is no resonance peak in the bode diagram.It can make the driver obtain more useful information in the low frequency range, and attenuate the road interference better in the high frequency range, thus the driver can get more satisfying road feel. Therefore, the designed time-delay controller can synthesize the advantages of both robust performance and robust stability, and has certain contribution to the design of the novel AFS system.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 02/2015; 36(1):11-19.
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    ABSTRACT: In this paper, we have designed a gait analysis system for detecting circular walking parameters for Parkinson's disease patients. The analysis system integrates low-cost sensors and devices with processing software and is easily portable with bluetooth wireless communication. Sensors employed include a gyroscope and four force sensitive resistors (FSR), which are wearable sensors attached to a patient, and a fixed laser scanner as well. The gait analysis system can measure and analyze circular walking data so that gait parameters such as walking speed, step length, and cadence can be obtained. In addition, the system can differentiate between normal steps and unusual steps such as freezing of gait (FOG) and asymmetric gaits. Five normal people have been asked to walk the circular path three times to collect the testing data. Experimental tests reveal that coefficient of determination of walking time was 0.99 and that of step number was 1 by comparing the test data of the system with those analyzed with video images.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 02/2015; 36(1):1-9.
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    ABSTRACT: In this study, the heat recovery from HCCI (Homogeneous Charge Compression Ignition) engine exhaust gas using organic Rankine cycle (ORC) to convert to power is presented. Refrigerants R141b, R123, R245ca, R245fa and toluene have been employed as working fluids for efficiency analyses. Their performances were also compared under different turbine inlet temperature. Toluene shows the highest efficiency and least mass flow rate among these working fluids; however, R141b can generate more work than other working fluids. R141b has also been compared with toluene under the same engine working condition. Results indicate that R141b generates more power than toluene but its mass flow rate is much more than that of toluene. The inlet air pressure of the engine significantly influences the thermal efficiency of ORC and the overall efficiency of HCCI-ORC system; low speed with high engine inlet pressure performs higher efficiency.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 02/2015; 36(1):31-39.
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    ABSTRACT: The influence of the 45.6% infrared portion of solar radiation goes counter to a reduction of the energy consumed by air conditioning. This paper suggests a solution to reduce the solar heat gain through glass windows in buildings by mounting a heat insulation film on the glass which has the ability to absorb or reflect some part of the infrared spectrum by means of nano ceramic particles embedded in a thin PET layer. This study deals with a comparison of both the numerical and experimental results obtained using three new thin film samples of different materials to determine their thermal insulation effects. The experimental results showed an average temperature reduction of about 20 degrees C on a black collector at steady state when using the best thin film compared with the use of regular glass. This revealed that the thin films used effectively reduced indoor temperature by reflection/absorption of a selected band in the infrared spectrum and this made them well suited for the control of solar heat gain through windows.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 02/2015; 36(1):85-90.
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    ABSTRACT: Amorphous alloy as a kind of new material with excellent mechanical properties has good super-plasticity and can precisely replicate the surface of mold in the supercooled liquid region (SCLR). It is suitable for manufacturing the precisely complex micro-and nano-scale components. To study the deformation behavior of micro amorphous alloy sheet, micro sheet tensile tests of Zr(55)Cu(30)Al(10)Ni(5)amorphous alloy were conducted at different temperatures of the SCLR and different strain rates. The stress-strain curves and the elongation of Zr55Cu30Al10Ni5 amorphous alloy under different conditions are obtained. The results indicate that the Zr55Cu30Al10Ni5 amorphous alloy has excellent super-plasticity. The steady state stress valuesdecrease with the increasingof deformation temperature or the decreasing of strain rate. The plastic deformation behavior of Zr55Cu30Al10Ni5 amorphous alloy is strongly dependent on the strain rate and temperature in the SCLR, which suggests the amorphous alloy have high strain rate sensitivity exponent and temperature sensitivity.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 02/2015; 36(1):49-57.
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    ABSTRACT: The goal of this study was to investigate the eligibility of using surface electromyography (EMG) as a feedback signal for ankle torque control in both normal and stroke subjects performing ankle joint angle tracking with a rehabilitation robot. The potential advantage of using EMG as an estimator of active torque is direct facilitation of torque control of individual muscle. A fuzzy PD+I controller was implemented to control the robot. A static EMG-torque map was constructed at 5 ankle positions experimentally for each subject. The map was interpolated to estimate the active dorsiflexion torque exerted on the ankle from the EMG of tibialis anterior muscle. Both EMG and the output of the torque sensor were acquired and a weighting factor was used to adjust the relative contribution from these two signals for controlling the robot. Six normal subjects and seven stroke patients were recruited. The angle trajectory to be tracked was alternating ramps (3 degrees/s) of dorsiflexion and plantarflexion. The results showed that all the tested combinations of EMG and the torque sensor signal could be used as the feedback signal for torque control during angle tracking with the robot. The normal subjects had a better performance than the stroke patients and the tracking performance was better when only the signal from the torque sensor was used.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 02/2015; 36(1):21-29.
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    ABSTRACT: The friction factor is a crucial parameter in metal forming, and it affects the billet forming process. This paper discusses the AL6061 aluminum friction factor based on the results of a ring crush test. Experimental and simulation compression ratios were combined in this study to draw graphs by using these friction values. Finally, DEFORM (TM) 3D software was used to analyze the impact of the various experimental parameters that were involved in forming a bicycle stem, to explore the effective stress, effective strain, axial force, velocity field, and observed micro-grain products, and to simulate and conduct size comparison experiments. The results of the analysis can be used to stabilize the finite element software that is used to form bicycle stems.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 02/2015; 36(1):41-48.
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    ABSTRACT: In this study, process and cold forging die designs were proposed to make a hollow part with small gear shapes on both ends with a triple-action press. The characteristics of high slenderness ratio, non-uniform hollow part thickness, and small gear shapes on both-ends result in difficulty of die filling and high forging load. First approach, one-pass forging die design was adopted to make all features of the part with an inner web and evaluate the forming difficulty and defects of triple-action forging process. Second approach, a multi-pass process design of two preforms was proposed to make hollow part without small gear shape on open ends. A finish triple-action forging design was proposed to produce the small features on open ends. A flash ring around the small features of the part was designed to improve the material flow of die filling and decrease the forming load. The parameters of preform and finish forging die designs were studied using the FEM simulation processes. The forging experiments were carried out to verify the proposed method, the experiment results showed good agreement with the simulations.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 02/2015; 36(1):75-84.
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    ABSTRACT: Polyvinylidene Fluoride (PVDF), a piezoelectric polymer, is suitable for flexible devices because of its flexibility and lightweight. In this article, the authors adopt commercial PVDF film to make a flexible PVDF film-loudspeaker. The proposed flexible PVDF film-loudspeaker is a sandwiched membrane structure which contains a PVDF film sandwiched in between two silver electrode-layers. An audio signal is applied to the PVDF film, which responds by the mechanical deflection in proportion to the voltage applied across the PVDF film, thus converting electrical energy into mechanical vibration. Therefore, the coupled electromechanical characteristic of the composite membrane dominates the performance of the loudspeaker. This work is to find the resonant frequencies and vibration mode shapes of the proposed flexible PVDF film-loudspeaker as well as its frequency response.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 02/2015; 36(1):59-66.
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    ABSTRACT: This study used a micro drawing to determine the effects of die angle (alpha=-15 degrees similar to 15 degrees) on the formability of micro circle cups. A program for finite element analysis of incremental elastic-plasticity deformation is developed by combining the flow rule of Prandtl-Reuss with finite element deformation theory and the stress-strain relation of correction materials. The program is then used to simulate the circle cup micro drawing process. The program uses general r(min) algorithm to solve problems of elastic-plasticity status and die contact. Simulations performed using the finite element analysis program acquire the relations among deformation, punch load, stroke, thickness distribution, stress, and strain distribution during the circle cup micro drawing process, which indicate the changes in the forming process. The simulation was consistent with experimental results, i.e., easily-cracked areas in the micro circle cup forming process appear on the punch fillet.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 02/2015; 36(1):67-73.
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    ABSTRACT: A novel pulses discriminator for linear motors direct-drive electrical discharge machining and a control strategy for its high efficiency deep-hole processing with thin electrode are proposed. From the fundamental experiments, both conventional ZNC EDM and the direct-driven (LmEDM for short) reveal machining speed break-away points. Associated with the feedback from a novel effective pulse discriminator, a reasonable EDM jump control is further proposed. It is found the direct–drive EDM with such a control is much more efficient than traditional ZNC-EDM by totally three times of speed, for the aspect ratio of 17.5 of deep EDM. Conducted by LmEDM alone, it can also achieve two times of ZNC-EDM speed. Moreover, the surface integrity is also improved with less wear of electrode and higher wall straightness. It is contributed from more efficient debris processing by the effective pulses information, high acceleration of linear motors, and reasonable jump control.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 04/2013; 34(2):167-176.
  • Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 01/2012;
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    ABSTRACT: This paper presents an unknown-index algorithm for the lattice Boltzmann method to solve unknowns on boundaries with irregular or fractal geometry in the fluid flows. This algorithm is easy implemented as well as the bounceback method, but the solutions of unknowns can be given by not only the bounceback assumption of all unknowns but also solving the governing equations. By this scheme, we simulate the flow past a cylinder in an unbounded domain and get consistent results with other literatures. Afterward we replace the cylinder by a two-dimensional Taiwan-island-like object with outlines similar to the irregular coasts. Both steady and unsteady flows with vortex shedding are discussed by evaluating the drag coefficients and Strouhal number via the momentum-exchange method.
    Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers - Series C 12/2011; 32(6):523-531.