Papers by Keyword: Noncontact

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Authors: Bu Lei Xu, Yang Zhao, Ling Ke Yu, Bing Xu, Hao Er Zhang, Wen Long Lv, Dao Heng Sun
Abstract: Radio Frequency Identification (RFID) tag is one of the Automatic Identification technology, its application has been involved in all aspects of daily life. A new micro manufacturing technology called Aerosol Jet® printing is described to fabricate the RFID tag in this paper. The fabrication method of Aerosol Jet printing RFID tag is that print the line using sliver ink as the seed first, and then electroplate copper to increase the line width and thickness to reduce the resistance, thus it would get the higher quality factor Q. The width of seed lines printed is 60 μm with the tip of 250 μm in diameter. The inductance value of RFID tag printed is in the range of 2.87 μH to 2.97 μH, it meets the required value of 2 μH to 6 μH.
Authors: A.N. Baybakov, V.M. Gurenko, S.P. Yunoshev, S.V. Plotnikov, V.V. Sotnikov, K.P. Kascheev
Abstract: Ensuring the safety of running trains is the main condition of railways exploitation for transport of passengers and cargoes all over the world. This is determined by the growth of moving speed in railways and by the wear of the rolling stock. As the moving speed increases, the requirements of quality of railways and of the rolling stock become stricter. This entails the necessity of optimal use of rolling stock without decreasing the movement safety. In particular, in Russia, occurs the wear of car and locomotive stock. A similar situation exists in railways of India, Australia and some former socialist countries.
Authors: Rong Song He, Chih Ted Horn, Hou Jiun Wang, Shun Fa Hwang
Abstract: Digital image correlation (DIC) is a whole-field and non-contact strain measuring method. It could provide deformation information of a specimen by processing two digital images that are captured before and after the deformation. In this work, a hybrid genetic algorithm, in which a simulated annealing mutation process and adaptive mechanisms are added to the real-parameter genetic algorithm, is used to search the corresponding subset after deformation. To invest the accuracy and reliability of this method, some key parameters are considered. The results indicate that the out-of-plane shift should be included, and a subset with 30x30 pixels should be recommended. The population size of 500, 100 generations, and 60 iterations are good enough. As for the searching strategy, it is recommended that the design variables are divided into three groups, each time only one group is under search, and they takes terms consecutively.
Authors: João Antonio Pereira, Danilo Damasceno Sabino, Antonio Eduardo Turra
Abstract: This paper presents a noncontact technique for displacement measurement based on the variation of the pixels positions of a target object in the images captured by CCD or CMOS sensor. A video from a moving structure is made and then it is analyzed frame by frame and the variation of the pixels position of the target object in the structure is calculated for each frame and related with the position of the object in the image. The proposed approach is evaluated to measuring vibrations of a reduced scale model of two-floor building lab structure, which focuses on the advantage of using a unique camera for measurements of structural vibrations. The results obtained are compared to reference model and have shown good agreement.
Authors: Min Rae Lee, Joon Hyun Lee
Abstract: This paper is focused on the capability of the Acousto-Ultrasonic (AU) technique and the non-contact technique to provide diagnostic information useful to detect defect in composite. An acousto-ultrasonics (AU) is to simulate stress wave that resemble acoustic emission waves but without disrupting the material. One launched inside the material sample, the wave are modified by stochastic processes like those that affect spontaneous acoustic emissions from internal sources during stressing, deformation, etc. Moreover, acousto-uloasonic waves are launched periodically at predetermined times and with predetermined reparation rates. A fiber reinforced composite materials should be inspected in fabrication process in order to enhance quality by prevent defects such as delamination and void. In conventional ultrasonic technique for the evaluation of FRP, the transducer should be contacted on FRP. Therefore, in this study, advanced conventional contacting method (AU) and non-contact technique using air-coupled transducer can make contact and noncontacting ultrasonic technique available in evaluation of FRP. This paper demonstrates first results using an acousto-ultrasonic technique.
Authors: Arsen Babajayan, Jong Chul Kim, Song Hui Kim, Barry Friedman, Kie Jin Lee
Abstract: We observed the glucose concentration of solutions using a near-field microwave microprobe (NFMM). Instead of the usual invasive technique, we take the advantage of the noncontact and noninvasive evaluation capabilities of an NFMM. The NFMM with a high Q dielectric resonator allows observation of small variations of the permittivity due to changes in the glucose concentration. By measuring the reflection coefficient we could observe the concentration of glucose with a detectable resolution to 0.5 mg/ml (0.05 %). The glucose biosensor using a NFMM provides an unique approach for glucose monitoring for diabetes.
Authors: Qing Qing Zhu, Qiang Qiang Miao
Abstract: This paper introduced a measuring soil sample triaxial volume displacement system that used position sensing detector.The system course of principle and development was maken a detailed statement. The study was carried through literature [12] existing shortcomings. The shortcomings of former system was mended in the new system .This system had a high measuring precision and reasonable design. This systems triumphantly developed will be applied in triaxial specimens local sheared and port restriction .This system have greatly applied foreground to study deformation localizing , come into being cut strip and measuring volume change of unsaturated soil.
Authors: Kie Jin Lee, Arsen Babajayan, Song Hui Kim
Abstract: A near-field scanning microwave microscope (NSMM) is used to study the physical properties of DNA strands with a specific sequence and image lamda-DNA bundles. After the hybridization process between target and capture sequences, specific DNA binding events leads to microwave reflection coefficient (S11) changes of the NSMM. These changes are caused by a modification of the physical dielectric constant due to sequence specific DNA binding. This study demonstrates significant potential of the NSMM as a nondestructive and noncontact tool to detect DNA strands without a target-probe amplification process and as a valuable technique to understand the physical property of DNA.
Authors: Yu Jun Feng, Zheng Ye Xiong, Yong Qiang Li, Cun You Huang, Wen Qing Shi, Jing Min Chen
Abstract: Based on laser and capacitive sensor, a method of measuring deflectable angle is presented, and a noncontact angle measuring system is established. This system has the advantages of simple constitution, real-time, on-line measuring, non-contact and high precision. It can be widely used in engineering, especially in blade angle detection of knife and scissors.
Authors: Feng Sun, Jun Jie Jin, Koichi Oka
Abstract: This paper proposes a noncontact magnetic suspension of an iron ball using a flux path control mechanism. In this system, the suspension force is generated by a disk-type permanent magnet, and controlled by varying the angle of the permanent magnet that is driven by a rotary actuator. In this paper, first, the suspension principle is explained, and the prototype is introduced. Second, the characteristics of this system are examined by some basic experimental results. Third, a model is created, and the numerical simulation is carried out. Finally, the suspension experiments are succeeded using the prototype, and the results are shown and discussed.
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