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Acoustic properties of closed-cell aluminum foams with different macrostructuresXingchuan Xia1,2,Zan Zhang2,Weimin Zhao2,Chong Li1,Jian Ding2,Chenxi Liu1,Yongchang Liu11. State Key Lab of Hydraulic..., as a kind of structure-function integration materials, the application of closed-cell aluminum foams has been restricted greatly in acoustic fields due to the difficulty of sound wave penetration......
Acoustic Emission Monitoring the Fatigue Crack Growth in SM50B-Zc Steel朱祖铭,王中光,蓬钧摘 要:<正> The acoustic emission(AE)characteristicsfrom the fatigue crack propagation in SM50B-Zcsteel were strongly affected by the environment me-dium.The AE feature from the fatigue process bothin air and in 3.5% NaCl aqueous solution mani-fested a periodicity which......
Optical and acoustic phonon modes confined in gallium phosphide nanoparticlesZHANG Zhaochun and ZHANG Neng School of Material Science and Engineering,Shanghai University,Shanghai 200072,China摘 要:The main aim of this paper is to discuss the confinement effects on the optical and acoustic phonon vibrational modes in gallium phosphide(GaP) nanoparticles......
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... are subjected to different acoustic pressures and the effect of grain refinement by ultrasonic treatment for these samples is different. With the increase of ultrasonic intensity, the acoustic pressure......
Effects of sonic speed ??on location accuracy of acoustic emission source in rocks LI Qi-yue, DONG Long-jun, LI Xi-bing, YIN Zhi-qiang, LIU Xi-ling School of Resources and Safety Engineering... and plane location tests were carried out. A broken pencil was simulated as acoustic emission source in the rocks. The line and plane location tests were carried out in the granite rod using two sensors......
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Monitoring Damage Evolution in a Titanium Matrix Composite Shaft Under Torsion Loading Using Acoustic EmissionXu Kong1,2,Yu-Min Wang1,Xu Zhang1,Qing Yang1,Guo-Xing Zhang1,Li-Na Yang1,Rui Yang11... under torsion loading were monitored using the acoustic emission technique. The composite shaft with SiC fibers at ± 45° orientations was prepared by the solid-state fabrication process. Both......
Influence of Interpenetrating Polymer Networks (IPN) Microstructure on Underwater Acoustic Stealth Performance罗忠College of Naval Architecture and Power, Naval University of Engineering摘 要:acoustic pulse tube device, the microstructure, phase separation degree, phase size and phase continuity......
Influence of Interpenetrating Polymer Networks (IPN) Microstructure on Underwater Acoustic Stealth Performance罗忠College of Naval Architecture and Power, Naval University of Engineering摘 要:acoustic pulse tube device, the microstructure, phase separation degree, phase size and phase continuity......
The Acoustic Emission Effects of Martensite Transformation in Alloys Cr12MoV and Fe-33Ni-4Ti-10Co焦成革,张宝祺,武高辉,姚忠凯摘 要:<正> 1 Introduction The method of acoustic emission (AE)as a new technique to study the processesin metals and alloys in the solid phase hasbeen widely used and developed since thelast 20 years. Martensite transformationis......
