共搜索到11908条信息,每页显示10条信息,共1191页。用时:0小时0分0秒515毫秒
J. Cent. South Univ. Technol. (2009) 16: 0683-0689 DOI: 10.1007/s11771-009-0113-4 Multi-objective coordination optimal model for new power intelligence center based on hybrid algorithm LIU Ji... of the power network planning effectively, on the basis of introducing the concept of power intelligence center (PIC), the key factor power flow, line investment and load that impact generation sector......
affected zone for GMAW and MIEA was observed,the minimum hardness corresponding to weld metal(*85 and *96 HV0.1for GMAW and MIEA,respectively).The high dilution between filler and base metal during welding...Tensile Properties and Fusion Zone Hardening for GMAW and MIEA Welds of a 7075-T651 Aluminum AlloyN.Alatorre1,2,3,R.R.Ambriz1,B.Noureddine2,3,A.Amrouche4,A.Talha5,D.Jaramillo11. Instituto Politcnico......
moving source (in pseudo-steady state condition). Figure 10 shows the weld thermal cycles for different distances from the center of the welding bead determined experimentally (Fig. 10(a)), analytically... determining the maximum weld temperature up to 13.0 mm from the weld center. The data in Table 2 indicate that within 10.5 mm from the center of the weld, the plate in every case reaches temperature......
Effects of Weaving Laser on Weld Microstructure and Crack for Al 6k21-T4 AlloyB.H.Kim1,W.T.Oh2,C.H.Kim3,J.H.Kim3,Y.S.Kim4,Y.H.Park11. Department of Materials Science and Engineering,Pusan National... Technology Service,KITECH,Jisa-dong,Ganseo-gu,Busan 618-230,Korea摘 要:For Al 6k21-T4 overlap weld joint,the shear-tensile strength by using the weaving......
A NEURAL NETWORK FOR WELD PENETRATION CONTROL IN GAS TUNGSTEN ARC WELDING J.Q. Gao1,C.S. Wu1,Y.H. Zhao1 (1.Institute of Materials Joining, Shandong University, Jinan 250061, China) Abstract:Realizing of weld penetration control in gas tungsten arc welding requires establishment of a model describing the relationship between the front-side geometrical parameters of weld pool and the back-side......
as HAZ. The thin zone subjected directly to the action of tool shoulder is referred as flow arm [16-21]. Semicircular rings on the top of weld surface are referred as banded microstructure. Distance..., LHR hardness level was generally higher for approximately HV10. Furthermore, the position of LHR was obviously different (greater distance from weld center) in comparison with lower half of the weld......
structure at weld seam center (region 1) and both sides of the center (region 2) of each weld layer 图7 焊接熔池结晶形态与温度梯度G,结晶速度R及溶质质量分数C0的关系 Fig. 7 Relationship of crystal forms of weld pool... diagonal cellular dendrite crystal are formed in weld center and off-centered area, respectively. The grain size in different regions of the weld increases layer-by-layer. In addition, HAZ is also found......
J. Cent. South Univ. Technol. (2011) 18: 898-908 DOI: 10.1007/s11771-011-0779-2 Recognition and depiction of special geologic bodies of Member 3 of Dongying Formation in Littoral Slope Zone, Qikou... geologic bodies of Member 3 of Dongying Formation in Littoral Slope Zone of Qikou Sag, which has important hydrocarbon exploration potential, are recognized and described under the constraint of sequence......
......
In?uence of Carbon Equivalent Value on the Weld Bead Bending Properties of High-Strength Low-Alloy Steel PlatesKwang Seok Lee22. Korea Institute of Materials Science, Implementation Research Division... during weld bead bend tests(WBBTs) was studied with ?ve different high-strength lowalloy steel plates that underwent different rolling processes. The test showed that cracks developed at the weld joint......