搜索结果: 1-15 共查到“工学 Modulus”相关记录26条 . 查询时间(0.093 秒)
Smart polyurethane foam with magnetic field controlled modulus and anisotropic compression property
Polyurethane magnetorheological foam preparation in-situ polymerization carbonyl iron particle polyurethane foam
2015/3/27
A new kind of polyurethane (PU) magnetorheological (MR) foam was prepared via in situ polymerization and foaming for the first time. A chain-like structure of carbonyl iron particles in the liquid pol...
An iterative approach for modal analysis of solid rocket motor incorporating frequency dependent modulus
modal analysis eigenfrequency frequency dependent modulus
2014/5/19
The modulus of viscoelastic materials varies with excitation frequency.However,during modal analysis of frequency dependent materials,a material evaluation frequency is necessary because stiffness can...
Resilient Modulus of Unbound Aggregate Base Courses from Senegal (West Africa)
Resilient Modulus Summary Resilient Modulus Quartzite Basalt Bandia Limestone Un-bound Aggregates
2013/1/31
This paper presents the results of research conducted to investigate the Resilient Modulus (Mr) of unbound aggregates used as pavement layer in Senegal (West Africa) as well as the effect of water con...
Physically crosslinked poly(vinyl alcohol) hydrogels with magnetic field controlled modulus
Physical crosslinking heterosexual ethylene glycol water gel carbonyl iron particle PVA hydrogel magnetorheological
2015/3/30
Physically cross-linked isotropic and anisotropic poly(vinyl alcohol) (PVA) hydrogels containing micron-sized carbonyl iron particles were prepared through a cyclic freezing–thawing process. The PVA h...
Two-Stage Constant Modulus Algorithm Equalizer for Singularity Free Operation and Optical Performance Monitoring in Optical Coherent Receiver
Fiber optics communications Coherent communications Polarization
2015/6/5
A two-stage constant-modulus-algorithm (CMA) equalizer for polarization-demultiplexing in a polarization-division-multiplexed coherent receiver is demonstrated. The equalizer eliminates the singularit...
纳米铜晶胞体积弹性模量变化规律的分子动力学模拟（Molecular Dynamics Simulation for Variation Relationship of Volume-elasticity Modulus of Crystal Cu with Pressure and Temperature）
分子动力学 纳米铜晶胞 体积弹性模量
2009/12/28
用分子动力学的方法详细模拟纳米铜晶胞随温度与压强变化的规律，得到了铜晶胞体积弹性模量突变的敏感压强点。模拟结果表明：单晶铜的在压强小于75 GPa时体积弹性模量随温度升高而降低，随压强增大而增大；在压强大于75 GPa时，体积弹性模量随温度升高而增大，随压强增大而减小。
CANTILEVER CLAMPING RIGIDITY IMPACT ON DYNAMIC MODULUS OF ELASTICITY CALCULATION
transverse free vibration cantilever clamping rigidity dynamic modulus of elasticity
2009/11/26
The paper presents the impact of the clamping ratio of a clamped beech (Fagus sylvatica) cantilever specimen on the calculation of a dynamic modulus of elasticity. First we measured the specimen’s fre...
液压油弹性模量提高方法与试验（Method and Experiment for Increasing Effective Fluid Bulk Modulus in Hydraulic Systems）
闭式液压系统 有效体积弹性模量 抽真空 试验
2010/4/1
分析了液压系统中含气量、工作压力等参数对油液有效体积弹性模量的影响规律，在此基础上采用抽真空除气与弹性模量检测相结合的方法提高油液弹性模量至期望值，并试验于某大型液压泵站。应用结果表明：含气量对弹性模量值影响显著，利用抽真空能够有效减小油液的含气量，将弹性模量值由821.3MPa提高至1201MPa；该方法在闭式液压系统中能够实现油液弹性模量的提高。 Effective fluid bulk mo...
MUSIC, CBF and Differential Algebraic Constant Modulus Algorithms for Direction of Arrival Estimation in Passive Coherent Locators
Passive Radar Direction of Arrival (DOA) Passive Coherent Locators (PCL)
2009/7/28
In passive coherent locators (PCL) systems, noise and the precision of direction of arrival (DOA) estimation are key issues. This paper addresses the implementation of high-resolution DOA estimation m...
QAM Adaptation of Constant-Modulus Algorithm and Differential Phase Compensation for Polarization Demultiplex in Coherent Receiver
QAM Adaptation Constant-Modulus Algorithm Differential Phase Compensation Polarization Demultiplex Coherent Receiver
2015/7/16
The constant modulus algorithm is adapted for QAM signals and complemented with a differential phase compensation. This triples polarization control speed and doubles laser linewidth tolerance.
Apparent Elastic Modulus of Scale Estimated from Bending Property of Single Wool Fiber
Bending modulus Single wool fiber KES mechanical property
2009/5/8
We measured the bending properties of a wool fiber having the complex internal structure in the natural fiber. Especially, the effect of the scale of wool fiber on the mechanical characteristic was e...
Predicting the Modulus of Rupture of Glued-Laminated Beams by the Rigid Bodies-Spring Model
glued-laminated beam proportional-limit bending stress modulus of rupture RBSM
2009/3/6
Today, the probabilistic model adopting Monte Carlo simulation is the established method to predict the modulus of rupture (MOR) of glued-laminated beams.However, it would be significant to calculate ...
Longitudinal Change of Dynamic Modulus of Elasticity and Quality Evaluation by a Non-destructive Method in Todomatsu（Abies sachalinensis）Plus Trees
todomatsu stress wave velocity standing tree dynamic modulus of elasticity
2009/3/6
Longitudinal changes of dynamic modulus of elasticity values (Efr) of logs for todomatsu (Abies sachalinensis) were investigated to clarify the best vertical region of the stem (height from ground lev...
The Evaluation of Modulus of Elasticity at an Early Stage of Growth in Sugi (Cryptomeria japonica) Wood Using S2 Microfibril Angle of Latewood Tracheids as a Wood Quality Indicator
Cryptomeria japonica S2 microfibril angle modulus of elasticity
2009/3/4
The objective of this study was to examine the evaluation of modulus of elasticity (MOE) in mature wood using microfibril angle at an early stage of growth. Several wood qualities, such as latewood t...
An Analysis of Young’s Modulus Distribution in the Paper Plane
paper Young’s modulus orthotrophy
2009/2/12
Within our research work we determined the Young’s modulus distribution in the paper plane on the basis of results of tensile tests in selected directions. Using mathematical relationships valid for o...