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Determination of mechanical properties of battery films from acoustic resonances

AIP Conference Proceedings 2018年第1期1949卷

作者： Kathryn L. Dallon Jing Yao Dean R. Wheeler Brian A. Mazzeo 1Department of Electrical and Computer Engineering Brigham Young University Provo Utah 84602 USA 2Department of Chemical Engineering Brigham Young University Provo Utah 84602 USA

Measuring the mechanical properties of lithium-ion battery films, such as thickness and elasticity, is important for predicting and improving homogeneity of the films and subsequent performance of the battery. Problems with film heterogeneity could be identified and addressed early on through accurate, non-destructive inspection of the electrode as it is being manufactured. This research investigates the use of acoustic measurements as an alternative means of non-destructive quality control that could be adapted for on-line use. Here we report on our efforts to distinguish among films with different mechanical properties using acoustic resonances. A clamped film is excited using a pulsed infrared laser to produce an acoustic resonance in a confined area, and a microphone measures the acoustic response. Because the resonance depends on properties such as thickness and density, the resonance frequency shifts with changes in these properties. As the thickness increases, the resonance frequency decreases. These results show that acoustic tests can demonstrate observable differences between films with different properties.

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The efficiency improving methods analyzing for the gasoil pump unit

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AIP Conference Proceedings 2019年第1期2141卷

作者： O. A. Lysenko A. V. Simakov M. Y. Chernev 1Department of Electrical Engineering Energy Institute Omsk State Technical University Mira Ave 11 Omsk 644050 Russia 2Department of Electrical Machines and General Electrical Engineering Electromechanical Faculty Omsk State Transport University Marx Ave 35 Omsk 644046 Russia 3Department of Theoretical Electrical Engineering and Electrification of Oil and Gas Industry Faculty of Automation and Computer Science Gubkin Russian State University of Oil and Gas (National Research University) Leninsky Prospekt Moscow 119991 Russia

In this article, the issues of improving the efficiency are considered. The aim of the work is to determine the benefits of using the PMSM-drive for the gasoil pump unit. Firstly, the object of study is selected. Secondly, the pump power consumption is analyzed. Then, energy optimization options are calculated. The method for determining power consumption parameters is a mathematical calculation. As a result, the object power characteristics are built. The pump energy consumption is calculated, the low efficiency of the pumping unit is determined. The efficiency may be increased by using PMSM-drive.

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Flexible, multi-measurement guided wave damage detection under varying temperatures

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AIP Conference Proceedings 2018年第1期1949卷

作者： Alexander C. S. Douglass Joel B. Harley 1Department of Mechanical Engineering University of Utah Salt Lake City Utah USA 2Department of Electrical and Computer Engineering University of Utah Salt Lake City Utah USA

Temperature compensation in structural health monitoring helps identify damage in a structure by removing data variations due to environmental conditions, such as temperature. Stretch-based methods are one of the most commonly used temperature compensation methods. To account for variations in temperature, stretch-based methods optimally stretch signals in time to optimally match a measurement to a baseline. All of the data is then compared with the single baseline to determine the presence of damage. Yet, for these methods to be effective, the measurement and the baseline must satisfy the inherent assumptions of the temperature compensation method. In many scenarios, these assumptions are wrong, the methods generate error, and damage detection fails. To improve damage detection, a multi-measurement damage detection method is introduced. By using each measurement in the dataset as a baseline, error caused by imperfect temperature compensation is reduced. The multi-measurement method increases the detection effectiveness of our damage metric, or damage indicator, over time and reduces the presence of additional peaks caused by temperature that could be mistaken for damage. By using many baselines, the variance of the damage indicator is reduced and the effects from damage are amplified. Notably, the multi-measurement improves damage detection over single-measurement methods. This is demonstrated through an increase in the maximum of our damage signature from 0.55 to 0.95 (where large values, up to a maximum of one, represent a statistically significant change in the data due to damage).

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Heat and mass transfer with viscous dissipation in porous medium: FEM based methodology

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AIP Conference Proceedings 2019年第1期2104卷

作者： T. M. Yunus Khan Maughal Ahmed Ali Baig Azeem N. Ameer Ahamad Irfan Anjum Badruddin 1Department of Mechanical Engineering College of Engineering King Khalid University PO Box 394 Abha 61421. Kingdom of Saudi Arabia 2Department of Mechanical Engineering CMR Technical Campus Hyderabad India 3Department of Mathematics and Computer Science Taylor’s University No. 1 Jalan Taylor’s Subang Jaya - 47500 Selangor Darul Ehsan Malaysia 4Mathematics Department Faculty of Science University of Tabuk P.O.BOX.741 Zip.71491 Saudi Arabia

Heat and mass transfer in porous media is a complex mathematical problem involving multiple partial differential equations. The current paper brings into picture the solution strategy to be applied using finite element method to solve the heat and mass transfer along with viscous dissipation in Cartesian coordinates. The applied methodology is successful in predicting the heat and mass transfer.

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On the numerical solution of nonlinear system of coupled sine-Gordon equations

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AIP Conference Proceedings 2018年第1期1997卷

作者： Ozgur Yildirim Meltem Uzun Oguz Altun 1Department of Mathematics Yildiz Technical University 34220 Esenler Istanbul Turkey 2Department of Computer Engineering Yildiz Technical University 34220 Esenler Istanbul Turkey

In this paper, a system of nonlinear coupled sine-Gordon, which have some powerful applications in physics and biology is considered. A special case of this system, which describe the open states in DNA double helices is studied. Numerical solution of this system is obtained by finite difference method with fixed point iteration. Some examples are considered and the results of numerical experiments are presented.

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Security analysis of Yu-CaO neural networks scheme

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AIP Conference Proceedings 2018年第1期2040卷

作者： Xiaoyan Ye Xiaoying Ye Ruiran Wu 1Department of Network Technology South China Institute of Software Engineering Guangzhou University China 2Department of Computer Science and Technology Neusoft Institute of Guangdong China

In 2006, Yu et al. presented a new cryptographic scheme based on delayed chaotic neural networks. However, Yang et al. found a fundamental flaw in Yu-Cao scheme by means of chosen plaintext attack in 2009. In this paper, a more effective method is described through the analysis of the Exclusive-or operation. As a result, it makes this cryptographic scheme insecure.

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Improving performance of indoor visible light communication systems with hexagonal designed LED transmitters

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AIP Conference Proceedings 2018年第1期1997卷

作者： Mahmoud Khaled Aburub Ahmetjan Bekenov 1Department of Computer Engineering Cyprus International University Nicosia TRNC Mersin 10 Turkey 2Department of Electrical and Electronic Engineering Cyprus International University Nicosia TRNC Mersin 10 Turkey

We discuss a simulation program for indoor visible light communication system with hexagonal LED array shape that will allow us to focus the luminance of optical light for the room center with neglecting of the boundary since they will be occupied by furniture. It is assumed that users will not be in those areas. We are going to model OOK, PPM and QAM modulation techniques with varied semi-angle degrees, as a result we want to prove with hexagonal shape we could make and uniform luminance in the room. MATLAB and Simulink will be used for simulation.

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Finite element solution strategy for viscous dissipation in porous medium

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AIP Conference Proceedings 2019年第1期2104卷

作者： Sarfaraz Kamangar Maughal Ahmed Ali Baig Azeem N. Ameer Ahamad Irfan Anjum Badruddin 1Department of Mechanical Engineering College of Engineering King Khalid University PO Box 394 Abha 61421. Kingdom of Saudi Arabia 2Department of Mechanical Engineering CMR Technical Campus Hyderabad India 3Department of Mathematics and Computer Science Taylor’s University No. 1 Jalan Taylor’s Subang Jaya - 47500 Selangor Darul Ehsan Malaysia 4Mathematics Department Faculty of Science University of Tabuk P.O.BOX.741 Zip.71491 Saudi Arabia 5Department of Mechanical Engineering College of Engineering King Khalid University PO Box 394 Abha 61421. Kingdom of Saudi Arabia

This article discusses the solution strategy to be adopted to solve the heat transfer in porous media having viscous dissipation effect. The solution strategy is based on finite element methodology being adopted to solve the equations. An iteratively procedure is used in order to predict the heat transfer behavior of porous medium confined in a square domain with heating and cooling of vertical walls.

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Ultrasound tongue contour extraction using BowNet network: A deep learning approach

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Proceedings of Meetings on Acoustics 2019年第1期39卷

作者： M. Hamed Mozaffari David Sankoff Won-Sook Lee 1Department of Engineering University of Ottawa School of Electrical Engineering and Computer Science Ottawa Ontario K1N 6N5 CANADA mmoza102@uottawa.ca 2Department of Mathematics and Statistics University of Ottawa 150 Louis Pasteur Pvt. Rooms 635-636 Ottawa Ontario K1N 6N5 CANADA sankoff@uottawa.ca 3Department of Engineering Professor School of Electrical Engineering and Computer Science (EECS) University of Ottawa Ottawa Ontario K1N 6N5 CANADA wslee@uottawa.ca

Ultrasound imaging is safe, relatively affordable, and capable of real-time performance. This technology has been used for real-time visualization and analyzing the functionality of human organs such as human tongue shape and motion during a real-time speech to study healthy or impaired speech production. Due to the noisy nature of ultrasound images with low-contrast characteristic, it might require expertise for non-expert users to recognize tongue shapes. To alleviate this difficulty and for quantitative analysis of tongue shape and motion, tongue surface can be extracted, tracked, and visualized instead of the whole tongue region. The progress of deep convolutional neural networks has been successfully exploited in various computer vision tasks. This paper presents two novel deep neural network models named BowNet and wBowNet benefits from the ability of global prediction of decoding-encoding models from integrated multi -scale-contextual information and the capability of full-resolution (local) extraction of dilated convolutions. Experimental results using ultrasound tongue image datasets from different ultrasound devices revealed that the combination of both localization and globalization searching could improve prediction result significantly. Assessment of BowNet models in real-time using both qualitatively and quantitatively studies showed their outstanding achievements in terms of accuracy and robustness in comparison with similar techniques.

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The computer coordination method and research of inland river traffic based on ship database

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AIP Conference Proceedings 2018年第1期1955卷

作者： Shanshan Liu Gen Li 1Information Engineering Department Guang Zhou Dong Hua College Guangzhou Guangdong 2Department of Computer Application Technology guang dong college of business and technology Zhaoqing Guangdong

A computer coordinated management method for inland river ship traffic is proposed in this paper, Get the inland ship’s position, speed and other navigation information by VTS, building ship’s statics and dynamic data bases, writing a program of computer coordinated management of inland river traffic by VB software, Automatic simulation and calculation of the meeting states of ships, Providing ship’s long-distance collision avoidance information. The long-distance collision avoidance of ships will be realized. The results show that, Ships avoid or reduce meetings, this method can effectively control the macro collision avoidance of ships.

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