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Alternative flat coil design for electromagnetic forming using FEM M. AHMED1, S. K. PANTHI1, N. RAMAKRISHNAN2, A. K. JHA1, A. H. YEGNESWARAN1, R. DASGUPTA1, S. AHMED3 1. Advanced... component of EMF system which needs to be designed depending on application. Flat spiral coils are generally used for electromagnetic forming of sheet metals. However, with this type of coil the central......
Effect of diode-laser parameters on shear force of micro-joints soldered with Sn-Ag-Cu lead-free solder on Au/Ni/Cu pad WANG Jian-xin(王俭辛)1, XUE Song-bai(薛松柏)1, FANG Dian-song(方典松)2, JU Jin-long... soldering methods respectively. The influence of different heating methods as well as output power of diode-laser on shear force of micro-joints was studied and the relationship between the shear force......
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Concentrations and Distribution Patterns of Rare Earth Elements in Water Body from Intertidal Flat of Tianjin and Influence of Various Factors 丁士明1,王立军1,梁涛1,张朝生2,丁立强3,阎欣4 (1.Institute of Geography... of rare earth elements(REEs)in the intertidal flat of Tianjin were studied using P507 resin and ICP-MS analytical technology. The results show that average concentrations of REEs in the filtered......
Flat Absorber Phosphorous Black Nickel Coatings for Space ApplicationsV.Maria Shalini,P.Arockiasamy,R.Uma Rani,A.K.Sharma摘 要:A new process of flat absorber black nickel alloy coating was developed on stainless steel by electrodeposition from a bath containing nickel,zinc and ammonium sulphates;thiocyanate and sodium hypophosphite for space......
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Forming mechanism of three-dimensional integral fin based on flat surfaceXIANG Jian-hua(向建化)1, 2, DUAN Ji-an(段吉安)1, ZHOU Hai-bo(周海波)1, ZHANG Chun-liang(张春良)2, LIU Gui-yun(刘贵云)2, ZHOU Chao(周超)2(1... is composed of a spiral micro-groove and multi radial micro-grooves. Both ploughing-extrusion (P-E) and stamping were used to form the integral-fins with a connection between radial and circumferential......
package LADIA is written in the PV-WAVE code and provides all necessary tools for image processing and analysis. Image intensity peaks are determined by a cross-correlation technique, which avoids......
with compositions of 73 wt% of Ni and 45 wt% of Ni were used as under bump metallization(UBM) in wafer level chip scale package,and their reliability was evaluated through electromigration(EM)test compared with commercial Cu UBM.For Sn3.8 Ag0.7 Cu(SAC)/Cu solder joints,voids had initiated at Cu cathode after 300 h and typical failures of depletion of Cu cathode and cracks were detected after 1000 h......
计计算.计算结果表明:以圆管为比较基准,在满足给定约束条件具有相同换热量和泵功耗的条件下可以使换热管的体积减小46.4%,可见优化效果显著；该方法可以为工程设计提供参考.关键词:扁管；强化换热；优化设计Structural optimization analysis of flat tube for heat transfer enhancementHE Shi-jing1, YAN..., Harbin 150001, China)Abstract:Based on the heat transfer and resistance experiment, the evaluation and analysis on the volume of single flat tube with different degrees of flattening were discussed......
