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Application of Phase-sensitivity Detector in Air-coupled Ultrasonic Testing Wei Dong1, a, Zhou Ziwei1, b and Zhou Zhenggan2, c 1School of electronic and information engineering, University of Science and Technology Liaoning, Liaoning, China 2Institute for Nondestructive Testing, Beihang University, Beijing, China aasweidong@yahoo.com.cn, bzhouzw@163.com, czzhenggan@buaa.edu.cn Keywords: Phase-sensitivity detector; Super-heterodyne Receiver; Air-coupled Ultrasonic; Ultrasonic imaging.
But there is poor power efficiency of transducer and long time pulse residue, due to the enormous difference consisted in the acoustic impedance between the transducer material and the air.
Chinese Journal of Mechanical Engineering, Vol. 44(2008), p.10 [2] Y.
Chinese Journal of Scientific Instrument, Vol. 27(2006), p.592 [6] Ritec Inc.

Then, the model is imported into ANSYS in IGES format, element with eight nodes and six faces ,appropriate mesh size are selected , the parameters as following: the material is gray cast iron, density=7200kg/m3,the young’s module=174GPa,the Poisson ratio=0.275, Fig 2 presents the finite element crossbeam model.
Acknowledgements The research presented in this paper was supported by the National Key Special Science and Technology Subject of China (No.2009ZX04002-031).
Journal of Tsinghua University.Vol.46 (2006), p.191-193
Journal of Vibration and Shock.Vol.2 (2008), p.168~172

Therefore, exploring the effective simulation of a scientific method which can improve the efficiency of electroless plating experiments and save a lot of manpower and material resources instead of the traditional experimental methods becomes the general trend.
Xi'an:  University of Electronic Science and Technology of Xi’an Press, 1996:1-4
International Journal of Impact Engineering [J], 2007, 34 (12): 1907
Journal of Chongqing University [J], 2002, 25 (6): 85.

Resulting in a lot of man power, material waste.
Acknowledgements This work was financially supported by the sub-topic of National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2011BAK07B03-9).
References [1] Xiaojing Wang, Fan Wang: Green Manufacturing, Mechanical and Automation Engineering Vol. 340 (2013), p. 903 [2] Zhang Zeliang, Li Xiongfei: International Journal of Digital Content Technology and its Applications Vol. 6 (2012), p. 69 [3] Zhang Zeliang, Li Xiongfei: Journal of Convergence Information Technology Vol. 7 (2012), p. 119 [4] Seyedi, Younes: IEEE Transactions on Wireless Communications Vol. 12 (2013), p. 3760 [5] Li Xin-zhi: Surface and Coatings Technology Vol. 232 (2013), p. 627

Suppose that the operating frequency of the cavity is 7.0MHz, with a length l=40mm, radius a=30mm, and its material is copper.
Acknowledgements The research was supported by the National Natural Science Foundation of China (51076044), the Fundamental Research Funds for the Central Universities (09MG35).
Journal of thermophysics and heat transfer, 10 (1996) 277-283
Journal of North China Electric Power University, 29 (2002) 44-47

Hybrid Prediction Method of Flight Accident Based on ARIMA and SVM Jing-Shun Duanmu1,a, Xu-Sheng Gan1,b and Jian-Guo Gao1,c 1 Material Management and Safety Engineering College, Air Force Engineering  University, Xi’an, Shaanxi, 710051, China a dmjs3836@163.com, b ganxusheng123@163.com, c gjg123@163.com Keywords: Auto-regressive integrating moving average; Unit roots test; Support vector machine; Flight accident; Hybrid prediction method Abstract.
China Safety Science Journal, 20(6), (2010), 40-44 [3] S.
Journal of Civil Aviation University of China, 24(1), (2006), 53-56 [4] D.

A High Speed Radio on Fiber Based on Optical Double-sidebands via Optical Filter and Optical Phase Modulation Guang Li Guangdong Institute of Science and Technology, Jinwan District Zhuhai, Guangdong, China 276563188@qq.com Keywords: optical double-sidebands; optical radio frequency; radio on fiber; optical fiber communication; wireless communication network.
In recent years, there are many reports regarded radio on fiber research in journals around the world[4-8].
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Should authors use tables or figures from other Publications, they must ask the corresponding publishers to grant them the right to publish this material in their paper.

Optical and Morphological Studies of Gold Nano Thin Films on Glass Substrates for Surface Plasmon Resonance Sensors Mina Mohammadiana, Amir Hossein Sarib,* Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran amina.mohammadian@srbiau.ac.ir, b,*sari@srbiau.ac.ir Keywords: Surface plasmon resonance, sputtering, refractive index sensor, thin film, Kretschmann configuration.
In this method, a change in the refractive index of the probed material shifts the resonance signal; which is the detection method of the SPR sensors [7].
García, Extended and localized surface plasmons in annealed Au films on glass Substrates, Journal of Applied Physics 108, (2010) 074303
Masingh, Surface plasmon resonance based refractive index sensor for liquids, Indian Journal of Pure & Applied Physics 43 (2005) 854-858

In Key Engineering Materials (Vol. 890, pp. 82-94).
InAdvanced Materials Research 2013 (Vol. 814, pp. 187-192).
In Key Engineering Materials (Vol. 890, pp. 66–75).
Materials Today: Proceedings. 2021 Aug 3; [8] Arameh E., Abdelmagid H., Faris T., Hamed A.D., Farzad K.
Simulation and experimental study of underwater dissimilar friction-stir welding between aluminium and steel, Journal of Materials Research and Technology, Volume 9, Issue 3, 2020, Pages 3767-3781, ISSN 2238-7854, https://doi.org/10.1016/j.jmrt.2020.02.003; [9] Shanavas, S., Edwin Raja Dhas, J. & Murugan, N.

Materials & Methods 3.1.
Direct ink writing of piezoelectric materials: A comprehensive review.
Journal of Materials Chemistry C, 9, 5804–5821
Materials Today: Proceedings, 62, 912–920
Roy, “Mechanical characterization of TPU-based flexible substrates for wearable electronics,” Journal of Materials Research, vol. 34, pp. 1248–1257, 2019