共搜索到47039条信息,每页显示10条信息,共4704页。用时:0小时0分0秒484毫秒
propagation images. The results show that in this pipeline, a distinct trend can be observed for all of maximum explosion pressure, the maximum explosion pressure rise rate, and the flame temperature.... 不同瓦斯体积分数爆炸火焰温度随时间动态变化曲线如图5所示. 图4 火焰传播过程中热电偶温度测量曲线(实线)与温度修正曲线(虚线) Fig. 4 Temperature measuring curves (solid lines) and temperature correction (dotted lines) by thermocouples during flame......
. The temperature rise behavior and microwave: Absorbing characteristics of ilmenite concentrate in microwave field [J]. Journal of Sichuan University, 2007, 39(2): 111-115. (in Chinese) [29] PICKLES...J. Cent. South Univ. Technol. (2010) 17: 1211-1215 DOI: 10.1007/s11771-010-0621-2 Microwave absorbing characteristics and temperature increasing behavior of basic cobalt carbonate in microwave......
correction. Chinese Journal of Rare Metals, 2014, 38(2): 202-209. [9] 陈 前, 王 岩. δ相时效态GH4169合金的热加工行为[J]. 中国有色金属学报, 2015, 25(10): 2727-2737. CHEN Qian, WANG Yan. Hot working behavior of delta-processed... material and interfacial friction condition at high temperature using inverse analysis[J]. Journal of Mechanical Science and Technology, 2010, 24(3): 639-648. [19] CHRISTIANSEN P, MARTINS P A F, BAY N......
match the FEM analysis results better, thus the accuracy of these formulas is improved. Key words: restrained steel beam; catenary action; rigid-plastic mechanism; numerical analysis; formula correction 1... analysis and formula correction 6.1 Error analysis As we know, there is still some deviations between the results of FEM analysis and the proposed formulas. The main reasons can be listed as below: 1......
growth function with the increase of temperature. Under the same strain condition, rock total damage decreases with the rise of confining pressure. By studying the electron microscope images (SEM... damage under different temperatures Both the elastic modulus and thermal damage show logistic increase curves with the rise of temperature (See Figure 1). The thermal damage curve can be divided......
and the decrease of the deformation temperature. Fig. 2 Comparison between friction-corrected and measured flow stress at different strain rates 3.2 Temperature correction Flow softening is a common..., at a strain rate of 1 s-1 and 10 s-1, the temperature increase is obvious. Due to the temperature rise, especially at a strain rate of 1 s-1 and 10 s-1, the measured flow stress curves must be corrected......
Low temperature thermoluminescence behaviour of Y2O3 nanoparticlesS.Delice1,M.Isik2,N.M.Gasanly3,41. Department of Physics, Hitit University2. Department of Electrical and Electronics Engineering... nanoparticles were investigated using low temperature thermoluminescence (TL) experiments. TL glow curve recorded at constant heating rate of 0.4 K/s exhibits seven peaks around 19, 62, 91,115,162,196......
Low temperature thermoluminescence behaviour of Y2O3 nanoparticlesS.Delice1,M.Isik2,N.M.Gasanly3,41. Department of Physics, Hitit University2. Department of Electrical and Electronics Engineering... nanoparticles were investigated using low temperature thermoluminescence (TL) experiments. TL glow curve recorded at constant heating rate of 0.4 K/s exhibits seven peaks around 19, 62, 91,115,162,196......
(1) 利用公式计算料滴质量(g),其中,ρ为料滴的密度(g/cm3). 料滴图像处理过程如图5所示,主要包括图像预处理和边缘提取2个部分.图5(a)中原始图像右侧为直径40 mm的标定圆.在拍摄过程中,由于存在反光及标定圆等干扰,因此,需要对料滴图像进行预处理来减少干扰,以便后续图像处理.预处理时,首先提取感兴趣区域.对于高分辨率,环境复杂的图像来说,水平切片法计算料滴体积计算过程复杂且容易受背景干扰,提取感兴趣区域会减少后续多余工作量[13-15].通过实验发现,料滴图像在B通道分量中与背景有明显的特征对比,获取感兴趣区域的B通道分量图像,如图5(b)所示. 预处理后对料滴图像进行阈值分割......
The friction and temperature rise on the marine gear tooth surfaces depend mainly on the meshing conditions in the asperity-contact regions. The contact pressure between two meshing teeth is often greater... distributed roughness on the surfaces will inevitably affect the mixed lubrication behavior, friction coefficient and temperature rise. Figure 5(b) presents the variations of friction coefficient μ......