The Experts below are selected from a list of 97671 Experts worldwide ranked by ideXlab platform
N V Shuley - One of the best experts on this subject based on the ideXlab platform.
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subsurface target recognition based on transient electromagnetic scattering
IEEE Transactions on Antennas and Propagation, 2009Co-Authors: Hoishun Lui, N V Shuley, Faisal Aldhubaib, Hon Tat HuiAbstract:The E-Pulse Technique which typically uses transient scattering data from radar targets in free space is one of the most well known resonance based radar target recognition schemes on which target recognition is based. In this communication, the possibility of subsurface target recognition based on the E-Pulse Technique is investigated using numerical examples of a metallic hip prosthesis embedded in models of realistic human tissue.
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detection of depth changes of a metallic target buried in a frequency dependent lossy halfspace using the e Pulse Technique
IEEE Transactions on Electromagnetic Compatibility, 2007Co-Authors: Hoishun Lui, N V ShuleyAbstract:The extinction Pulse (E-Pulse) Technique has been widely applied to the problem of free-space radar target identification. In this paper, the possibility of applying the same E-Pulse Technique to a subsurface target recognition scheme is investigated. In particular, the detection of depth changes of a metallic target is considered with numerical examples that determine the depth of a hip prosthesis model buried inside representative human tissue.
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radar target identification using a banded e Pulse Technique
IEEE Transactions on Antennas and Propagation, 2006Co-Authors: N V ShuleyAbstract:Resonance based radar target recognition using the extinction Pulse (E-Pulse) Technique was first implemented in the mid 1980s. Various derivatives of the E-Pulse Technique itself as well as the associated problems of identification and differentiation have been reported throughout the literature. In this paper a modified version of the E-Pulse, termed the "banded" E-Pulse Technique is introduced as an alternative tool for target identification
Yiming Jiang - One of the best experts on this subject based on the ideXlab platform.
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use of the potentiostatic Pulse Technique to study and influence pitting behavior of 317l stainless steel
Journal of The Electrochemical Society, 2020Co-Authors: Bin Chen, Yangting Sun, Dingzhou Cai, Qiong Yao, Liqiang Yin, Yiting Wan, Yiming JiangAbstract:Potentiostatic Pulse Technique (PPT) measurements with different parameters were performed on 317L stainless steel. It is revealed that the selection of time parameters can control pitting size and the influences of cycle number concentrate in the first few cycles. The most stable pits initiated and grew simultaneously in the first cycle. Additionally, critical pitting temperature (CPT) measurements were performed after PPT measurements. The results verify that CPT values and their distribution range are influenced by test conditions. The CPT values of samples have an obvious increase after PPT tests. Therefore, by choosing appropriate parameters, PPT method can be used to change the surface condition of stainless steel sample and then improve its pitting resistance.
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the temperature dependent pitting and repassivation behaviors of uns s31803 duplex stainless steel in chloride solutions
Corrosion Science, 2019Co-Authors: Xuan Wu, Yuanyuan Yang, Jin Li, Yiming JiangAbstract:Abstract An improved electrochemical method named thermal Pulse Technique was designed to measure the current flowing from a potentiostatically maintained UNS S31803 electrode in 1 M NaCl solution, while various thermal Pulses were applied on the solutions. Both the critical pitting temperature (CPT) and the repassivation temperature (Tr) were measured in one thermal Pulse. The Tr data presented an inverted V-shape trend as the cooling rate decreased. Both the CPT and Tr values declined after multiple thermal Pulses. The cyclic potentiodynamic polarization curves present a sharp transition of pitting and repassivation potential at the temperature ranged between the CPT and Tr.
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determination of pitting initiation of duplex stainless steel using potentiostatic Pulse Technique
Electrochimica Acta, 2010Co-Authors: Juan Gao, Yiming Jiang, Bo DengAbstract:Abstract Duplex stainless steel simultaneously comprises various phases, inclusions, precipitates and grain boundaries. It is full of academic and valuable significance for materials designing and processing optimization to ascertain the corrosion resistance of corresponding phases and various microstructures. However, up to date, efficient evaluation Technique is still scare mainly due to difficulty in controlling of micropits. In this work, for the first time, optimized potentiostatic Pulse Technique (PPT) was established and applied to study the rule of initiation of pits of solution annealed and aged DSS in 1.0 mol/L NaCl solution. The results showed that the size of pits can be well-controlled by adjusting the condition of potential Pulse. Combined with SEM/EDS system observation, it was found that for solution-annealed specimens, sulphide and oxide mixed inclusions were the preferential pit initiation sites, while for aged specimens, majority pits occurred at inclusions in area impoverished in Cr/Mo, which is vicinal to σ phase. The phenomena that growing pits is retarded by precipitation rich in Cr/Mo, i.e. σ phase, was testified and explained.
Hon Tat Hui - One of the best experts on this subject based on the ideXlab platform.
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subsurface target recognition based on transient electromagnetic scattering
IEEE Transactions on Antennas and Propagation, 2009Co-Authors: Hoishun Lui, N V Shuley, Faisal Aldhubaib, Hon Tat HuiAbstract:The E-Pulse Technique which typically uses transient scattering data from radar targets in free space is one of the most well known resonance based radar target recognition schemes on which target recognition is based. In this communication, the possibility of subsurface target recognition based on the E-Pulse Technique is investigated using numerical examples of a metallic hip prosthesis embedded in models of realistic human tissue.
Rushan Chen - One of the best experts on this subject based on the ideXlab platform.
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radar target recognition based on multi directional e Pulse Technique
IEEE Transactions on Antennas and Propagation, 2013Co-Authors: Huanhuan Zhang, Dazhi Ding, Rushan ChenAbstract:In the implementation of E-Pulse Technique based radar target recognition system, only one E-Pulse is constructed for each target and it is considered to be aspect-independent, which is grounded in the knowledge that E-Pulse synthesis is based on the poles of targets and they are aspect-independent. But our recent study suggests that the poles obtained by pole extraction algorithm are aspect-dependent although theoretically poles of targets are aspect-independent. This is because the residues of the poles are aspect-dependent. The residues represent the contributions of the poles to the late-time transient scattered field and they may be so small at some aspect angles that the corresponding poles can not be extracted by pole extraction algorithm. Consequently, different poles may be extracted at different aspect angles. If only one E-Pulse is constructed using the poles extracted at one aspect angle, it may not work for the transient scattered fields at other aspect angles. In order to solve this problem, we propose a multi-directional E-Pulse Technique which constructs multiple E-Pulses for different angle regions of a target. Numerical results show that the proposed method is very robust and can dramatically improve the recognition rate of E-Pulse Technique.
Hoishun Lui - One of the best experts on this subject based on the ideXlab platform.
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subsurface target recognition based on transient electromagnetic scattering
IEEE Transactions on Antennas and Propagation, 2009Co-Authors: Hoishun Lui, N V Shuley, Faisal Aldhubaib, Hon Tat HuiAbstract:The E-Pulse Technique which typically uses transient scattering data from radar targets in free space is one of the most well known resonance based radar target recognition schemes on which target recognition is based. In this communication, the possibility of subsurface target recognition based on the E-Pulse Technique is investigated using numerical examples of a metallic hip prosthesis embedded in models of realistic human tissue.
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detection of depth changes of a metallic target buried in a frequency dependent lossy halfspace using the e Pulse Technique
IEEE Transactions on Electromagnetic Compatibility, 2007Co-Authors: Hoishun Lui, N V ShuleyAbstract:The extinction Pulse (E-Pulse) Technique has been widely applied to the problem of free-space radar target identification. In this paper, the possibility of applying the same E-Pulse Technique to a subsurface target recognition scheme is investigated. In particular, the detection of depth changes of a metallic target is considered with numerical examples that determine the depth of a hip prosthesis model buried inside representative human tissue.
