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Study on Heat-driven Thermoacoustic Cryocoolers Operating in the Cryogenic Temperature Range from Liq
Heat-driven thermoacoustic cryocooler is a new kind of cryogenic technology without any moving parts which promises high reliability, long lifetime and low cost. There are great application potentials for it in the place where electricity is....
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Theoretical Approach and Development on a High Frequency Miniature Acoustic-Driven Thermoacoustic Ref
The research of miniature high frequency thermoacoustic refrigerator faces many challenges such as sound field mismatch and viscosity losses caused by dimension decrease, especially lack of suitable high sound pressure resonating system beca....
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Key Components and Overall Performance Study of the Moving-Magnet Linear Compressor for Striling Refr
With the rapid technical improvement of aero scope, solid electronics and cryobiology, free-piston, high cooling capacity Stirling refrigerators based on the moving magnet linear compressor own bright and extensive application prospect. In t....
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Influencing Factors of Photographic Properties of Hydrophilic Photothermographic Materials
In recent years, significant advances were made in technology of photothermographic (PTG) materials, and wide application was realized in medical films fields. However, there were still some problems needing to be further studied, such as di....
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Research on Application and Theory of Mechanism for 6-3-3 Parallel Mechanism
In this doctoral dissertation, study of parallel robot is reviewed from viewpoint of theory of mechanism and there are six central dissertations in the review: structure theory, kinematics analysis, workspace analysis, singularity analysis,....
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Study of Conceptual Design Solution Process Based on Function
Conceptual design is the early phase in product design process. It is critical to product life-cycle. The core of conceptual design is the solving process and utility of knowledge to realize the process. The goal of product design is the att....
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Stochastic Resonance and Its Application in Weak Signal Detection
When the nonlinearity of a system matches with its input signal and its input noise, the additivity of the noise would not decrease the system output signal-to-noise ratio (SNR on the contrary, it can greatly improve the SNR of the system, i....
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Research of Data Fusion Based on Vector Hydrophones
Multi sensor data fusion is a technology of multi subject across. Recent twenty years, technology of multi sensor data fusion is generally attended and widely used along with technologies of sensor、computer、communication and signal proce....
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Theoretical and Experimental Researches on Capillary-Assisted Evaporation
For the evaporation of the working fluid with low saturated vapor pressure, to overcome the unfavorable influence of the liquid pressure on its saturated temperature, the falling film evaporating heat transfer method is usually adopted, such....
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Vapor-Liquid Equilibria for Multi-component Mixed Refrigerants at Cryogenic Temperature Range
In recent years, there are many great achievements on the research of mixed-gases Joule-Thomson refrigerators (MJTRs). Driven by an ordinary air-conditioning compressor, the MJTR has become dominant for applications over a large temperature....
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Interaction between Polymer and Laser (Ⅲ) Manufacture of Fine Circuit on Polyimide Film by Selectiv
With the development of microelectronic industry, new techniques are urgently required to lower the pollution, simplify and the producing process of electronic circuit, and miniaturize the products. Electroless plating is widely used because....
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Study on Product Life Cycle 3E+S Assessment and Methodology of Decision Analysis
Sustainable development seeks to meet current needs of the society without compromising the ability of future generations to satisfy their own needs. Sustainable development requires a dynamic state of harmony between economic activity and e....
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The Study on Fuzzy Quality Function Deployment Technology of Product Design
Quality function deployment (QFD) is a systematic customer-oriented method of product design. Through matrices named 'House of Quality' (HOQ) translation, Customer requirements are broken down into each stage of designing and manufacturing r....
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Preparatiion and Tribological Investigation of Rare Earth Nanocomposite Thin Films
Micro-electromechanical-systems (MEMS) technology has been received much attention for its characteristics such as small size, light weight,compact integration and advanced aptitude. Friction, wear and stiction are the important factors whic....
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The Fundamental Investigation on Magnetron Sputtering Ti-Ni Alloy Thin Film in Micro Electro Mechanic
Microelectromechanical systems (MEMS) have paved a new way for technological industry by mechanical miniaturization, informational integration and functional diversification. In 21st century the development of MEMS is promising and has penet....
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Train-Track-Bridge System and Train-Bridge Stochastic Vibration
From the point of view of system dynamics, the train-track-bridge dynamics analysis theory and computing programs are established. Computing results and in site testing results are compared to validate the train-track-bridge analysis theory.....
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Field Experimental and Theoretical Study on Blating Wave Propagation Charcteristics under Different T
Based on the bed rock blasting excavation at Ling'ao Nuclear Power Station(LNPS),Guangdong,China,rock mass blast vibration has been monitored. By experiments on the spot and theoretic analyses,comprehensive studies are carried out on the law....
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Dynamic Performance Analysis and Robust Design of a Tuning Fork Vibratory Micromachined Gyroscope Str
At present, with ceaseless improvement of micro-electro-mechanical technology (MEMT), development of the technology of the micro-electro-mechanical system (MEMS) tends to be directed forward its application in industrial branches.Especially,....
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Study on the Mechanism of Innovative Micro/Nano Measuring Probes
Three kinds of innovative micro/nano measuring probe system will be introduced in this paper, which developed from the DVD pickup head combining with the analysis about the optical theory, the mechanism structure and the electronics characte....
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Research on the Fault Diagnosis Method of Rolling Element Bearing Based on Cyclostationary Signal Pro
Rolling element bearing is one of the most widely used components in almost all kinds of machinery. Its working condition has influence on product quality and working safety in industry directly. So it is very significant to research on bear....
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Study on Weak Fault Characteristics Extraction of Rolling Element Bearing and Gear Based on Cyclostat
With the development of technology, rotating machinery possesses more and more complex structure, which asks for accurate operation situation to ensure long-term safe running. As vital parts of rotating machinery, rolling element bearing and....
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Research on Mechanical Noise Sources Identification and Feature Extraction
As the result of vibration emission in air, machine sound signal carries affluent information about the working condition of machine and it can be used to make mechanical fault diagnosis. The fundamental problems for sound diagnosis are to e....
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Study on Stiffness and Dynamic Optimization of Tower Crane Structure
The issue of static stiffness of tower crane is researched in current thesis to meet the need of modifying standard, GB/T 3811-83 "Design rules for cranes". Based on the mass data obtained from existing tower cranes and theoretical analysis,....
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Study on the Numerical Simulation and the Thermodynamic Model of the Tank Discharge Process
Discharge method is one of methods to measure the flow rate characteristics of pneumatic components. Being simple, energy-saving and efficient, it is also highly applicable. In this internationally coordinated research project, theoretical a....
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VPSs Based Manufacturing System Mode and Its Application Research
Due to the competation of international market, manufacturing industry is facing the stress of staifying customers with small batch production and rapid response to dynamic market. Conventional manufacturing systems can' t meet such requirem....
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On the New Methodology of Mechanism Design Based on Nonlinear Scince
In 1961, E. Lorenz made an important contribution when he studied nonlinear equations motivated by the turbulence of motion of the atmosphere. He discovered that a small change in initial conditions leads to very different outcomes in a rela....
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Research on the Theory and Technologies of Mechanical Product Genetic Engineering Based on Function S
Conceptual design of mechanical product is the most important stage of product design process. The product conceptual scheme is the most crucial to the product ultimate quality, the market competitiveness and the profitability of enterprises....
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Meshing Analysis and Design of New Hy-Vo Silent Chain
Sponsored by National Natural Science Foundation of China(50575089), analyzing the New Hy-Vo Dentiform Chain and its structure form, referring to the newest achievement of New High-speed Dentiform Chain Meshing Function and Its Design(502750....
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Research on Camshaft Connecting- Rod Type Low Speed High Torque Hydraulic Motors with High- Pressure
Camshaft connecting- rod type low speed high torque hydraulic motor is an important hydraulic actuator that is widely used in many industry fields. At present, making rated pressure rank of hydraulic motors higher has been becoming a stringe....
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Experimental Study and Numerical Simulation of Pulse Tube Refrigerator Below 20K
The pulse tube refrigerator has no moving part at the cold end, so it has advantages over other types of refrigerators in terms of reliability, cost, lifetime. Great progress has been made on the development of the pulse tube refrigerators .....