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is proposed to evaluate damage of silt through field measurement ultrasonic data. The study could provide a theoretical basis for the treatment of silty soil highway. Key words: silt of Yellow River Flood Field; dynamic triaxial; soil dynamic characteristic; ultrasonic wave velocity Cite this article as: JIN Qing, ZHENG Ying-jie, CUI Xin-zhuang, CUI She-qiang, QI Hui, ZHANG Xiao-ning, WANG Shuai......
Surface Nanocrystallization of Magnesium Alloy AZ91D by High-Energy Shot Peening张津School of Materials Science & Engineering,University of Science and Technology BeijingCollege of Materials Science & Engineering,Chongqing University of Technology摘 要:High-energy shot peening (HESP), a method to produce severe plastic deformation by high velocity flying......
Localization system for mobile robot using scanning laser and ultrasonic measurement LIU Kai(刘凯)1, SUN Zeng-qi(孙增圻)1, AN Bin(安斌)2 (1. Department of Computer Science & Technology, Tsinghua... and position information for the robot. Then, a novel scanning laser and ultrasonic absolute positioning system was developed to eliminate the accumulative error in dead reckoned robot heading......
Numerical simulation of acoustic pressure field for ultrasonic grain refinement of AZ80 magnesium alloy SHAO Zhi-wen, LE Qi-chi, ZHANG Zhi-qiang, CUI Jian-zhong Key Laboratory of Electromagnetic... pressures on the behaviors of cavitation bubble in the melt were studied. The ultrasonic field propagation in the melt was also characterized. The results show that samples from different positions......
heat-resistant parts. Key words: semi-solid metals; rheocasting; Al-Si alloy; ultrasonic vibration; properties 1 Introduction Hypereutectic Al-Si alloys with high Si content, which have... are detrimental to the mechanical properties[1-2]. It has been known that ultrasonic vibration has the effects of refining microstructure of metals. Ultrasonic vibration was employed in the field of metal’s......
Mechanism and microstructure of nickel-ceria composite coatings prepared by pulse current deposition under the ultrasonic field周小卫1,沈以赴1,郑莹莹1,靳惠明21. College of Materials Science and Technology... with pulse current (PC) deposition and the ultrasonic (U) field was used to fabricate pure nickel and nickel-ceria composite coatings, respectively. Morphology, crack propagation, and crystal texture were......
Mechanism and microstructure of nickel-ceria composite coatings prepared by pulse current deposition under the ultrasonic field周小卫1,沈以赴1,郑莹莹1,靳惠明21. College of Materials Science and Technology... with pulse current (PC) deposition and the ultrasonic (U) field was used to fabricate pure nickel and nickel-ceria composite coatings, respectively. Morphology, crack propagation, and crystal texture were......
Q. High-energy ultrasonic filed effects on the microstructures and mechanical behaviors of A356 alloy [J]. Journal of Alloys and Compounds, 2009, 470: 168-172. [15] JIAN X, XU H, MEEK T T, HAN Q... Abstract: The squeeze pressure field and power ultrasonic field were applied during the conventional casting process of Al-5.0Cu alloy simultaneously. The effects of individual squeeze pressure or power......
course of micro-sized non-metallic inclusions in an ultrasonic standing wave field was numerically simulated. The results of theoretical analysis and numerical simulation show that the movement...ULTRASONIC SEPARATION OF MICRO-SIZED INCLUSIONSIN MOLTEN METAL X.Q.Bai1,J.C.He1 (1.Key Laboratory of National Education Ministry for Electromagnetic Processing of Materials, NortheasternUniversity......
shielding properties [1-2]. It will reduce the energy consumption if Mg-Li series alloys are successfully widespread applied. But the strength of Mg-Li alloys at room temperature especially at high temperature is low[3]. Additionally, the alloys have poor corrosion resistance, which limits their applications [4-6]. Several previous investigations proposed that high intensity ultrasonic treatment was one......
