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: finned tube; surface treating; heat transfer; multi-dimensional surface  ... nucleating cavities on heat exchange surface is an excellent way to enhance heat transfer. SCOTT and MASSOUD[10] attained three-dimensional porous SHFS in hill-piled shape by using the copper powder......
of pressure and friction between the plough tool and works. During the extrusion-plough process, it is noticed that four kinds of fins are appeared, which are gestation fin, multi-dimensional fin, tumor and overlap fin, when using different machining parameters. And multi-dimensional fin which has high heat transmission efficiency is a kind of complicated fin with cockscomb-like 3D substructure fin......
Evaluation of surface textures and skid resistance of pervious concrete pavementCHEN Yu(陈瑜)1, WANG Ke-jin(王科进)2, ZHOU Wen-fang(周文芳)1(1. School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410004, China; 2. Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames IA50010, USA)Abstract:Surface textures had......
to dry and flooding modes were achieved. Furthermore, obtained surface roughness is much better that under MQL. DHAR et al [20] evaluated the effect of MQL on cutting temperature, chip and dimensional... showed that although cutting temperature was high for dry machining using a multi-layer PVD coated tool (TiN/TiAlN), and the values of cutting force, surface quality, and tool wear were low in dry......
3D Evaluation Method of Cutting Surface Topography of Carbon / Phenolic (C/Ph) Composite周鹏Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education,Dalian University of Technology摘 要:3D evaluation method of cutting surface topography for C/Ph composites was established.The cutting surface was measured by Talyscan......
3D Evaluation Method of Cutting Surface Topography of Carbon / Phenolic (C/Ph) Composite周鹏Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education,Dalian University of Technology摘 要:3D evaluation method of cutting surface topography for C/Ph composites was established.The cutting surface was measured by Talyscan......
, submicron, micron WC grains and some voids on the surface can be observed clearly at high magnification (Fig. 1(b)). Fig. 1 Micrographs of multi-dimensional WC-10Co4Cr powder at different...) of WC-10Co4Cr coatings and 304 stainless steel in fresh water 3.5 Cavitation erosion behavior and mechanism Figure 7 shows the surface morphologies of the multi-dimensional WC-10Co4Cr coating......
的动力学框图 Fig. 2 Dynamic diagram of parallel mechanism of multi-dimensional loading system 1.2 液压动力元件建模 EH-MDLPM采用非对称液压缸作为执行机构进行力加载,阀控非对称液压缸原理图如图3所示,图3中为活塞杆无杆腔压力;为活塞杆无杆腔面积;为活塞杆无杆腔流量;为活塞杆有杆腔压力;为活塞杆有杆腔面积;为... of electro-hydraulic multi-dimensional force loading system with parallel mechanism 2 系统耦合分析 根据式(7)可以得到阀控非对称液压缸输出力为 (10) 式中:为单位矩阵. 结合式(8)~(10)可得,在各位姿下阀控非对称液压缸输出力为 (11) 式中:为驱动信号到阀控非对称液压缸输出力的传递函数. 由式......
of coating porosity and surface roughness of nickel-aluminum alloy (Ni-5%Al) in plasma spray forming was presented, which was based on the multi-dimensional statistical behaviors of the droplets as well...-aluminum alloy Ni-5%Al (mass fraction) coating porosity and surface roughness in plasma spray forming based on the multi-dimensional statistic behaviors of droplets as well as the simplification......
in the simulating body fluids(SBF) and hydroxyapatite formation on the surface was investigated.We could evidence the formation of hydroxyapatite on the forsterite surface after 7 days of immersion.The MTT......