搜索结果: 1-15 共查到“工学 surface roughness”相关记录33条 . 查询时间(0.097 秒)
Surface Charge-Driven Nanoengineering of Monodisperse Carbon Nanospheres with Tunable Surface Roughness
carbon nanospheres interfacial assembly surface charge surface roughness water dispersity
2023/6/19
Direct pyrolysis of polymer nanospheres usually leads to severe particle aggregation, uncontrolled surface morphology, and poor solvent dispersibility of the carbonaceous analogues. The successful man...
USING MULTI-DIMENSIONAL MICROWAVE REMOTE SENSING INFORMATION FOR THE RETRIEVAL OF SOIL SURFACE ROUGHNESS
Radar SAR PolSAR Soil Surface Roughness airborne in-field measurements
2016/12/1
In this Paper the potential of multi parametric polarimetric SAR (PolSAR) data for soil surface roughness estimation is investigated and its potential for hydrological modeling is evaluated. The study...
EVALUATION OF BIOLOGICAL FILMS TO SEA SURFACE ROUGHNESS OBSERVED BY SAR
SAR Ocean color Surface wind Surface roughness Biological activity
2015/12/28
The images of the sea surface roughness observed by PALSAR on ALOS over the Philippine Archipelagos were studied with other opportunities of satellite observations including MODIS and other measuremen...
DISCONTINUITY SURFACE ROUGHNESS MEASUREMENT TECHNIQUES AND THE EVALUATION OF DIGITAL PHOTOGRAMMETRIC METHOD
Joint surface roughness Roughness measurement techniques
2015/6/1
The development of the knowledge from classical photogrammetry to digital photogrammetry is provided simplicity on the works
carried out either on the field or on the laboratory. As a result of this...
ANALYSIS OF X-BAND POLARIMETRIC SAR DATA FOR THE DERIVATION OF THE SURFACE ROUGHNESS OVER BARE AGRICULTURAL FIELDS
Remote Sensing SAR Soil Land Cover Land Use Agriculture
2015/5/29
We investigated the potential of fully polarimetric data in X-band to discriminate the principal surface types present in a study site near Avignon in France: bare soils, agricultural fields, orchards...
纵向表面粗糙度对滚子副乏油润滑性能的影响（Effects of Longitudinal Surface Roughness on the Lubricating Performance of Starved Roller EHL Contacts）
滚子副 粗糙度 乏油 润滑性能
2010/12/28
对全膜及乏油条件下纵向粗糙度滚子副弹流润滑问题进行了求解。结果表明，滚子接触副中部与端部的润滑特性不同，由于端部效应的存在，其端部油膜厚度远低于中部。表面粗糙度会引起油膜厚度及压力的波动，在纯滚动条件下，油膜波动的波长等于粗糙度的波长，而幅值大于粗糙度的幅值。表面粗糙度会降低油膜厚度，尤其在乏油润滑条件下。供油膜厚越小，滚子接触副越容易乏油。在一定供油量下，表面粗糙度的幅值越大，波长越小，对滚子副...
基于激光反射的土壤表面粗糙度测量装置设计与试验（Design of a Laser Scanner for Characterizing Soil Surface Roughness）
土壤 粗糙度 三角测距法 激光测距传感器
2010/1/28
为了实时获取土壤表面粗糙度数据，设计了一种基于激光三角测距原理的土壤表面粗糙度专用测量装置。采用激光扫描测距仪测量微位移，其精度高、响应速度快，测距分辨力高达0.1mm，显著提高了土壤表面粗糙度的测量精度；借助于光电编码盘和螺杆组合实现高精度扫描定位；PDA作为上位机，农田环境下具有方便携带，大容量存储数据和智能化实时处理功能等优点。
微细铣削表面粗糙度预测与试验（Experiment and Prediction Model for Surface Roughness in Micro-milling）
微细铣削 表面粗糙度 正交回归分析
2010/1/28
分别采用正交试验回归分析法和基于正交旋转组合设计的二次响应曲面法（RSM）建立了微细铣削表面粗糙度预测模型，并在微小型车铣中心上对硬铝合金进行了试验研究，分析了铣削参数对表面粗糙度的影响。分别对两种预测模型进行了显著性检验并进行对比分析后发现：二阶响应曲面法的预测精度明显优于正交回归分析法。根据二次响应曲面法的试验结果，对回归方程中的回归系数进行了显著性检验，得出了铣削参数影响表面粗糙度的线性效应...
Prediction of Surface Roughness in Turning Using Adaptive Neuro-Fuzzy Inference System
Adaptive Neuro-Fuzzy Surface Roughness Prediction Turning
2010/1/15
Due to the extensive use of highly automated machine tools in the industry, manufacturing requires reliable models for the prediction of output performance of machining processes. The prediction of su...
基于农田不平度的拖拉机机组输入谱推导与振动仿真（Deduction of Input Spectrum of Tractor-implement Combination and Vibration Simulation Base on Farm Surface Roughness）
农田不平度 拖拉机作业机组 输入谱
2009/12/28
推导了拖拉机为两轴四轮、播种机为单轴两轮的六轮输入谱矩阵，可用于研究牵引式播种作业机组受农田不平度激励所产生振动的频域特性。用Roberson-Wittenburg(R-W)方法建立了牵引机组的22自由度动力学模型，然后根据R-W法建立了机组的动力学普遍方程，在对方程进行运动学和动力学分析的基础上，采用多步Geal-预估-校正法进行了时域求解，采用等效的统计线性化方法进行频域求解，对比分析表明动力...
Influence of workpiece inclination angle on the surface roughness in ball end milling of the titanium alloy Ti-6Al-4V
Machining Ball end milling Workpiece inclination angle
2009/12/14
Purpose: The aim of this work is to provide an in-depth understanding of the surface texture produced by various workpiece inclination angles using high speed finish ball end-milling of the titanium a...
Investigation of Surface Roughness of Austenitic Manganese Steel in Hot Machining
Hot machining surface roughness austenitic manganese steel
2009/10/14
In this study, surface roughness of austenitic manganese steel was investigated in hot machining by
heating with a liquid petroleum gas flame in a lathe machine. First, the value of surface roughness...
The Effects of Cutting Tool Coating on the Surface Roughness of AISI 1015 Steel Depending on Cutting Parameters
Machining Surface roughness Cutting tool coating Cutting parameters
2009/10/9
The effects of a number of cutting tool coating materials on the surface quality of workpieces, depending on various cutting parameters, were investigated. AISI 1015 steel was processed without coolin...
The Effect of Surface Roughness on the Performance of Hydromagnetic Squeeze Films between Two Conducting Rough Porous Elliptical Plates
Squeeze film Hydromagnetic lubrication Reynolds equation Roughness Load carrying capacity
2009/9/30
The present study analyzed the performance of hydromagnetic squeeze films between 2 conducting rough porous elliptical plates. The bearing surfaces were assumed to be transversely rough. The roughness...
水稻种绳直播机对地表不平度的动态响应（Dynamic Response of Taped Type Rice Direct Seeding Machine for Field Surface Roughness）
水稻 种绳直播机 地表不平度
2009/9/11
为了探索水稻种绳直播机对地表不平度激励的适应性，进行了动态模拟试验。根据样机的结构特点，设计了由角位移传感器、数据采集卡和计算机等构成的地表不平度检测系统。检测了由旋耕形成的原始地表不平度和经过种绳直播机作业后形成的地表不平度，应用Matlab软件对信号进行了时域和频域分析。应用等同法建立了系统的传递函数，分析了系统的动态特性。研究结果表明，由种绳直播机和土壤等构成的土壤—机器系统是一个具有一阶惯...