31 Result(s)
within
Engineering
Characterization and Evaluation of Materials
Yu** Zhou
Chapter
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Chapter and Conference Paper
The Study of Fracture Toughness of Bohai Sea Ice
The evaluated method in engineering for ice load caused by the interaction of ice and structures is according to the compressive strength of ice. The test of interaction of ice and piles indicated that the maj...
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Chapter
Investigation of Thermal Diffusivity of Composite Material by ‘Mirage Effect’
Thermal difrusivity is one of the important physical properties of composite materials, no matter it is used as structural or functional elements. The determination of thermal diffusivity of composite is impor...
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Chapter
New Absorbing Boundary Conditions for Finite-Difference Modeling of Elastic Waves
The successful development of an effective NDE technique depends on a full understanding of the physics of ultrasound interaction with the test material. This can be best achieved through numerical simulation ...
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Chapter
Absorbing Boundary Conditions with Zero Reflection Angles for Compressional and Shear Incident Waves
The technique of artificial absorbing boundaries is often applied in the numerical modelling of wave propagation and other related numerical studies of ultrasonic NDE. For a physical problem with an unbounded ...
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Chapter
Numerical Model of Elastic Wave Interactions with a Diffusion Bond
Solid state bonds are being extensively developed and used in aerospace structures. As with any other bonding technology, a reliable method for estimating bond strength is needed in order to establish confiden...
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Chapter and Conference Paper
Modeling and Simulation of Microelectromechanical Systems with an Analog Hardware Description Language
In this paper, a modeling approach is introduced that includes the micromechanical components into the system level simulation. The proposed approach can be implemented by combining the commercially available ...
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Chapter
Performance Dependence of 4K Pulse Tube Cryocooler on Working Pressure
Performance of pulse tube cryocoolers working around 4 K region is affected by the fact that helium gas deviates from the ideal gaseous state. Previous experimental studies are mostly done in the working press...
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Chapter
Stability Study of Coaxial Pulse Tube Cooler Driven by Air Conditioning Compressor
A simple introduction is given to the development of a pulse tube cooler driven by a selfadjusted air-conditioning compressor in our laboratory. Based on our previous work, with input power increased to less t...
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Chapter
Performances of Two Types of Miniature Multi-Bypass Coaxial Pulse Tube Refrigerators
For the purpose of cooling space-borne infrared devices, two types of miniature multi-bypass coaxial pulse tube refrigerators are currently under development in our laboratory. The Oxford-style compressors wit...
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Chapter
Research of Two-Stage Co-Axial Pulse Tube Coolers Driven by a Valveless Compressor
Multi-stage pulse tube refrigerators driven by Stirling-type compressors have potential application in space and military. Here a 16 Hz, 55 cc rotary drive compressor was used to do two-stage pulse tube cooler...
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Chapter
Optimal Design of a Compact Coaxial Miniature Pulse Tube Cooler
This paper presents an optimal design of a 1W / 80K co-axial miniature pulse tube cooler based on the aid of numerical model that incorporates both thermodynamics and hydrodynamics for the oscillating flow and...
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Chapter
Experimental Comparison of Mixed-Refrigerant Joule-Thomson Cryocoolers with Two Types of Counterflow Heat Exchangers
A miniature, closed cycle Joule-Thomson cryocooler with gas mixtures operating between 67.5K to 100K was investigated experimentally. In the experiment, two types of miniature counterflow heat exchangers were ...
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Chapter and Conference Paper
An algorithm of Tool Path Generation for Parts with Regular Features
In general, for NC machining of the models with regular features, the relevant tool paths are also arranged in regularity. In this paper, an algorithm is researched of generating tool path attached to the mode...
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Chapter and Conference Paper
Optimization Design of Hydraulic Servo Actuators with 3-D.O.F. and Motion Decoupling
Robot actuator is one of very important key parts in robot researching field. Researchers hope an ideal kind of actuators with stronger output torque, lighter weight, smaller volume, motion decoupling and easi...
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Chapter and Conference Paper
Automated Generation of Dimension Chains for Auto-Body Dimensional Quality Evaluation
Dimensional quality evaluation is one of essential steps during auto-body early design stage. There are plenty of elements impacting on the variation propagation of assembly process. Dimension chain can addres...
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Chapter and Conference Paper
Coordination Component Based on Petri Net for Collaborative Design
Considering the lack of efficient coordination of task interdependencies in the collaborative design system, the temporal and resource coordination mechanisms for respective problems are established based on P...
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Chapter and Conference Paper
The Research on Integrated System of Mechanical Product Intelligent Design and Management Decision Support in CE Environment
From the views of optimising the process of product design and promoting the reliability and time utility of the management decision and improving the competitive ability of the product in the market, the theo...
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Chapter and Conference Paper
CAD Modeling of Straight Bevel Gears
In this paper, the foundation equations for gear modeling are presented. Based on ACIS geometric engine, gear-modeling software is developed. The solid model of a straight bevel gear is generated.
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Chapter and Conference Paper
Analysis of Compaction Process between Impact Compacting Machine and Roadbed
The non-linear soil mechanics model based on Mohr-Coulomb yield criteria is deducted, and impaction effect of non-column wheels of compacting machine is calculated using MSC/NASTRAN. The comparison between cal...
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Chapter and Conference Paper
Dynamic Compressive Properties of a PBX Analog as a Function of Temperature and Strain Rate
The compressive strength behavior of a Polymer Bonded Explosives (PBX) analog was measured as a function of temperature (25°C to 95°C) and strain rate (100 to 700 s-1) using the split Hopkinson pressure bar (SHPB...
