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Fingerprint Matching Based on Local Relative Orientation Field 被引量:1
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作者 ZHUEn YINJian-ping ZHANGGuo-min 《Wuhan University Journal of Natural Sciences》 EI CAS 2004年第4期435-438,共4页
A fingerprint matching method based on local relative orientation field is proposed. It extracts local relative orientation field around each minutia for minutiae matching. Local orientation features are also used to ... A fingerprint matching method based on local relative orientation field is proposed. It extracts local relative orientation field around each minutia for minutiae matching. Local orientation features are also used to sorting minutiae in order to speed up searching a minutia when pairing minutiae. The experimental result reveals that this method achieves improved recognition accuracy. Key words fingerprint matching - ridge-based minutiae matching - local relative orientation field - sorting minutiae CLC number TP 391 Foundation item: Supported by the National Natural Science Foundation of China (60373023)Biography: ZHU En (1976-), male, Ph. D candidate, research direction: pattern recognition, image processing and information security. 展开更多
关键词 fingerprint matching ridge-based minutiae matching local relative orientation field sorting minutiae
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A Retrieval Matching Method Based Case Learning for 3D Model 被引量:1
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作者 Zhi Liu Qihua Chen Caihong Xu 《Journal of Software Engineering and Applications》 2012年第7期467-471,共5页
The similarity metric in traditional content based 3D model retrieval method mainly refers the distance metric algorithm used in 2D image retrieval. But this method will limit the matching breadth. This paper proposes... The similarity metric in traditional content based 3D model retrieval method mainly refers the distance metric algorithm used in 2D image retrieval. But this method will limit the matching breadth. This paper proposes a new retrieval matching method based on case learning to enlarge the retrieval matching scope. In this method, the shortest path in Graph theory is used to analyze the similarity how the nodes on the path between query model and matched model effect. Then, the label propagation method and k nearest-neighbor method based on case learning is studied and used to improve the retrieval efficiency based on the existing feature extraction. 展开更多
关键词 CASE Learning-based RETRIEVAL matching SIMILARITY matching
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Block-Based Adaptive Image Steganography Using LSB Matching Revisited 被引量:2
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作者 Wei Huang Yao Zhao Rong-Rong Ni 《Journal of Electronic Science and Technology》 CAS 2011年第4期291-296,共6页
Recently, an edge adaptive image stegano- graphic method based on least significant bit (LSB) matching revisited (EA-LSBMR) has been proposed, which holds good visual quality and proper security under appropriate ... Recently, an edge adaptive image stegano- graphic method based on least significant bit (LSB) matching revisited (EA-LSBMR) has been proposed, which holds good visual quality and proper security under appropriate embedding rates. However, from the extensive experiments to EA-LSBMR, we find that the discrete Fourier transform (DFT) spectrum of pixelpairs differences histogram still reveals the presence of a secret message even in a low embedding rate. To enhance the security, a modified scheme is proposed in this paper, which can defeat the above-mentioned analysis and keep the visual quality better than EA-LSBMR in higher embedding rates. Experimental results using a latest universal steganalysis method have demonstrated the proposed method's good performance. 展开更多
关键词 Index Terms---Block-based steganography least significant bit matching revisited pixel-pairs differences histogram steganalysis.
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Source Range Estimation Based on Pulse Waveform Matching in a Slope Environment
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作者 吴祖勇 张仁和 +2 位作者 秦继兴 彭朝晖 孟洲 《Chinese Physics Letters》 SCIE CAS CSCD 2017年第7期122-125,共4页
An approach of source range estimation in an ocean environment with sloping bottom is presented. The approach is based on pulse waveform correlation matching between the received and simulated signals. An acoustic pro... An approach of source range estimation in an ocean environment with sloping bottom is presented. The approach is based on pulse waveform correlation matching between the received and simulated signals. An acoustic prop- agation experiment is carried out in a slope environment. The pulse signal is received by the vertical line array, and the depth structure can be obtained. For the experimental data, the depth structures of pulse waveforms are different, which depends on the source range. For a source with unknown range, the depth structure of pulse waveform can be first obtained from the experimental data. Next, the depth structures of pulse waveforms in dif- ferent ranges are numerically calculated. After the process of correlating the experimental and simulated signals, the range corresponding to the maximum value of the correlation coefficient is the estimated source range. For the explosive sources in the experiment with two depths, the mean relative errors of range estimation are both less than 7%. 展开更多
关键词 Source Range Estimation based on Pulse Waveform matching in a Slope Environment
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Scene matching based on non-linear pre-processing on referenceimage and sensed image
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作者 ZhongSheng ZhangTianxu SangNong 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2005年第2期237-240,共4页
To solve the heterogeneous image scene matching problem, a non-linear pre-processing method for the original images before intensity-based correlation is proposed. The result shows that the proper matching probability... To solve the heterogeneous image scene matching problem, a non-linear pre-processing method for the original images before intensity-based correlation is proposed. The result shows that the proper matching probability is raised greatly. Especially for the low S/N image pairs, the effect is more remarkable. 展开更多
关键词 intensity-based correlation heterogeneous image scene matching
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High Lattice Match Growth of InAsSb Based Materials by Molecular Beam Epitaxy 被引量:2
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作者 任洋 郝瑞亭 +4 位作者 刘思佳 郭杰 王国伟 徐应强 牛智川 《Chinese Physics Letters》 SCIE CAS CSCD 2016年第12期133-137,共5页
High lattice match growth of InAsSb based materials on GaSb substrates is demonstrated. The present results indicate that a stable substrate temperature and the optimal flux ratios are of critical importance in achiev... High lattice match growth of InAsSb based materials on GaSb substrates is demonstrated. The present results indicate that a stable substrate temperature and the optimal flux ratios are of critical importance in achieving a homogeneous InAsSb based material composition throughout the growth period. The quality of these epilayers is assessed using a high-resolution x-ray diffraction and atomic force microscope. The mismatch between the GaSb substrate and InAsSb alloy achieves almost zero, and the rms surface roughness of InAsSb alloy achieves around 1.7A over an area of 28μm × 28μm. At the same time, the mismatches between GaSb and InAs/InAs0.73Sb0.27 superlattices (SLs) achieve approximately 100 arcsec (75 periods) and zero (300 periods), with the surface rms roughnesses of InAs/InAs0.73Sb0.27 SLs around 1.8 A (75 periods) and 2.1A (300 periods) over an area of 20 μm×20 μm, respectively. After fabrication and characterization of the devices, the dynamic resistance of the n-barrier-n InAsSb photodetector near zero bias is of the order of 10^6Ω·cm^2. At 77K, the positive-intrinsic-negative photodetectors are demonstrated in InAsSb and InAs/InAsSb SL (75 periods) materials, exhibiting fifty-percent cutoff wavelengths of 3.8μm and 5.1μm, respectively. 展开更多
关键词 INASSB as is GaSb on in High Lattice match Growth of InAsSb based Materials by Molecular Beam Epitaxy of by
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Matching Rota-Baxter Systems and Gröbner-Shirshov Bases
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作者 Yi Zhang Shuangjian Guo 《Algebra Colloquium》 SCIE CSCD 2024年第3期389-406,共18页
Motivated by the concept of matching Rota-Baxter algebras arising from polarized associative Yang-Baxter equations and Volterra integral equations,we introduce the notion of a matching Rota-Baxter system,which general... Motivated by the concept of matching Rota-Baxter algebras arising from polarized associative Yang-Baxter equations and Volterra integral equations,we introduce the notion of a matching Rota-Baxter system,which generalizes the Rota-Baxter system proposed by Brzezinski.We show that this notion is also related to Yang-Baxter pairs and to matching pre-Lie algebras.We then modify the definition of matching Rota-Baxter systems by adding a curvature term,and make a connection with matching pre-Lie algebras and with compatible associative algebras.Furthermore,we study matching Rota-Baxter systems on a dendriform algebra and show how they induce matching quadri-algebra structures.Finally,we give a linear basis of free matching Rota-Baxter system by Grobner-Shirshov bases methods. 展开更多
关键词 Rota-Baxter systems curved matching Rota-Baxter systems Gröbner-Shirshov bases
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Compressive sensing based multiuser detector for massive MBM MIMO uplink 被引量:3
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作者 SONG Wei WANG Wenzheng 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2020年第1期19-27,共9页
Media based modulation(MBM)is expected to be a prominent modulation scheme,which has access to the high data rate by using radio frequency(RF)mirrors and fewer transmit antennas.Associated with multiuser multiple inpu... Media based modulation(MBM)is expected to be a prominent modulation scheme,which has access to the high data rate by using radio frequency(RF)mirrors and fewer transmit antennas.Associated with multiuser multiple input multiple output(MIMO),the MBM scheme achieves better performance than other conventional multiuser MIMO schemes.In this paper,the massive MIMO uplink is considered and a conjunctive MBM transmission scheme for each user is employed.This conjunctive MBM transmission scheme gathers aggregate MBM signals in multiple continuous time slots,which exploits the structured sparsity of these aggregate MBM signals.Under this kind of scenario,a multiuser detector with low complexity based on the compressive sensing(CS)theory to gain better detection performance is proposed.This detector is developed from the greedy sparse recovery technique compressive sampling matching pursuit(CoSaMP)and exploits not only the inherently distributed sparsity of MBM signals but also the structured sparsity of multiple aggregate MBM signals.By exploiting these sparsity,the proposed CoSaMP based multiuser detector achieves reliable detection with low complexity.Simulation results demonstrate that the proposed CoSaMP based multiuser detector achieves better detection performance compared with the conventional methods. 展开更多
关键词 media based modulation(MBM) radio frequency(RF)mirror compressive sensing(CS) multiple input multiple output(MIMO) multiuser detector compressive sampling matching pursuit(CoSaMP).
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Hierarchical adaptive stereo matching algorithm for obstacle detection with dynamic programming 被引量:1
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作者 Ming BAI Yan ZHUANG Wei WANG 《控制理论与应用(英文版)》 EI 2009年第1期41-47,共7页
An adaptive weighted stereo matching algorithm with multilevel and bidirectional dynamic programming based on ground control points (GCPs) is presented. To decrease time complexity without losing matching precision,... An adaptive weighted stereo matching algorithm with multilevel and bidirectional dynamic programming based on ground control points (GCPs) is presented. To decrease time complexity without losing matching precision, using a multilevel search scheme, the coarse matching is processed in typical disparity space image, while the fine matching is processed in disparity-offset space image. In the upper level, GCPs are obtained by enhanced volumetric iterative algorithm enforcing the mutual constraint and the threshold constraint. Under the supervision of the highly reliable GCPs, bidirectional dynamic programming framework is employed to solve the inconsistency in the optimization path. In the lower level, to reduce running time, disparity-offset space is proposed to efficiently achieve the dense disparity image. In addition, an adaptive dual support-weight strategy is presented to aggregate matching cost, which considers photometric and geometric information. Further, post-processing algorithm can ameliorate disparity results in areas with depth discontinuities and related by occlusions using dual threshold algorithm, where missing stereo information is substituted from surrounding regions. To demonstrate the effectiveness of the algorithm, we present the two groups of experimental results for four widely used standard stereo data sets, including discussion on performance and comparison with other methods, which show that the algorithm has not only a fast speed, but also significantly improves the efficiency of holistic optimization. 展开更多
关键词 Stereo matching Ground control points Adaptive weighted aggregation Bidirectional dynamic programming Obstacle detection based on stereo vision
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基于List-Based转移的英语语义分析翻译系统研究 被引量:1
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作者 王娟娟 《电子设计工程》 2020年第16期35-38,共4页
针对智能语义分析方法中的非投射弧问题,在List-Based转移算法的基础上,文中结合抽象语义关系图,提出了一种语义分析翻译系统。利用对比大量词语对的方法,List-Based转移算法可以获取这些词语的语义关系,且同时还具有较小的时间复杂度,... 针对智能语义分析方法中的非投射弧问题,在List-Based转移算法的基础上,文中结合抽象语义关系图,提出了一种语义分析翻译系统。利用对比大量词语对的方法,List-Based转移算法可以获取这些词语的语义关系,且同时还具有较小的时间复杂度,再结合改进的JAMR对齐器和Oracle分析器,最终提出了基于List-Baesd转移的语义分析翻译系统。该翻译系统可以准确识别出英语等语言的词语顺序变化,从而避免出现智能语义分析方法的非投射弧问题。相关的仿真结果表明,与常用的智能语义分析方法相比,基于List-Based转移算法的语义分析翻译系统具有更加优秀的分析和翻译准确度。 展开更多
关键词 语义分析 JAMR对齐器 List-based转移算法 语义匹配 语言模型 Oracle分析
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Optimal Matching Control of a Low Energy Charged Particle Beam in Particle Accelerators 被引量:3
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作者 Zhigang Ren Tehuan Chen Zongze Wu 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2019年第2期460-470,共11页
Particle accelerators are devices used for research in scientific problems such as high energy and nuclear physics.In a particle accelerator, the shape of particle beam envelope is changed dynamically along the forwar... Particle accelerators are devices used for research in scientific problems such as high energy and nuclear physics.In a particle accelerator, the shape of particle beam envelope is changed dynamically along the forward direction. Thus, this reference direction can be considered as an auxiliary "time" beam axis. In this paper, the optimal beam matching control problem for a low energy transport system in a charged particle accelerator is considered. The beam matching procedure is formulated as a finite "time" dynamic optimization problem, in which the Kapchinsky-Vladimirsky(K-V) coupled envelope equations model beam dynamics. The aim is to drive any arbitrary initial beam state to a prescribed target state, as well as to track reference trajectory as closely as possible, through the control of the lens focusing strengths in the beam matching channel. We first apply the control parameterization method to optimize lens focusing strengths, and then combine this with the time-scaling transformation technique to further optimize the drift and lens length in the beam matching channel. The exact gradients of the cost function with respect to the decision parameters are computed explicitly through the state sensitivity-based analysis method. Finally, numerical simulations are illustrated to verify the effectiveness of the proposed approach. 展开更多
关键词 Beam matching computational optimal CONTROL CONTROL PARAMETERIZATION sensitivity-based analysis time-scaling transformation
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Enhanced efficiency and stability in Sn-based perovskite solar cells with secondary crystallization growth
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作者 Zhixin Jin Bin-Bin Yu +7 位作者 Min Liao Di Liu Jingwei Xiu Zheng Zhang Efrat Lifshitz Jiang Tang Haisheng Song Zhubing He 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第3期414-421,共8页
The conversion efficiencies reported for Tin(Sn)halide-based perovskite solar cells(PSCs)fall a large gap behind those of lead halide-based PSCs,mainly because of poor film quality of the former.Here we report an effi... The conversion efficiencies reported for Tin(Sn)halide-based perovskite solar cells(PSCs)fall a large gap behind those of lead halide-based PSCs,mainly because of poor film quality of the former.Here we report an efficient strategy based on a simple secondary crystallization growth(SCG)technique to improve film quality for tin halide-based PSCs by applying a series of functional amine chlorides on the perovskite surface.They were discovered to enhance the film crystallinity and suppress the oxidation of Sn^(2+)remarkably,hence reduce trap state density and non-irradiative recombination in the absorber films.Furthermore,the SCG film holds the band levels matching better with carrier transport layers and herein favoring charge extraction at the device interfaces.Consequently,a champion device efficiency of 8.07% was achieved alo ng with significant enhancements in VOC and JSC,in contrast to 5.35% of the control device value.Moreover,the SCG film-based devices also exhibit superior stability comparing with the control one.This work explicitly paves a novel and general strategy for developing high performance lead-free PSCs. 展开更多
关键词 Tin based perovskite solar cells Secondary crystallization growth Amine chloride Non-irradiative recombination Energy band levels matching
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Integrating Color and Spatial Feature for Content-Based Image Retrieval 被引量:1
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作者 Cao Kui Feng Yu-cai 《Wuhan University Journal of Natural Sciences》 EI CAS 2002年第3期290-296,共7页
In this paper, we present a novel and efficient scheme for extracting, indexing and retrieving color images. Our motivation was to reduce the space overhead of partition-based approaches taking advantage of the fact t... In this paper, we present a novel and efficient scheme for extracting, indexing and retrieving color images. Our motivation was to reduce the space overhead of partition-based approaches taking advantage of the fact that only a relatively low number of distinct values of a particular visual feature is present in most images. To extract color feature and build indices into our image database we take into consideration factors such as human color perception and perceptual range, and the image is partitioned into a set of regions by using a simple classifying scheme. The compact color feature vector and the spatial color histogram, which are extracted from the seqmented image region, are used for representing the color and spatial information in the image. We have also developed the region-based distance measures to compare the similarity of two images. Extensive tests on a large image collection were conducted to demonstrate the effectiveness of the proposed approach. 展开更多
关键词 color distribution spatial color histogram region-based image representation and retrieval similarity matching integrating of single features
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A Note on Matching in Groups and Field Extensions
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作者 Babak Hassanzadeh 《Journal of Mathematics and System Science》 2018年第3期84-85,共2页
The purpose of this note is to give some open problems on matching theory and their relation to the well-known results in this area? .
关键词 Acyclic matching matchable bases strong matching.
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View synthesis based on the serial images from camera lengthways motion
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作者 Zhang Jing Wang Changshun +2 位作者 Liao Wuling Ou Zongying Hua Shungang 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2006年第2期284-289,共6页
For the pre-acquired serial images from camera lengthways motion, a view synthesis algorithm based on epipolar geometry constraint is proposed in this paper. It uses the whole matching and maintaining order characters... For the pre-acquired serial images from camera lengthways motion, a view synthesis algorithm based on epipolar geometry constraint is proposed in this paper. It uses the whole matching and maintaining order characters of the epipolar line, Fourier transform and dynamic programming matching theories, thus truly synthesizing the destination image of current viewpoint. Through the combination of Fourier transform, epipolar geometry constraint and dynamic programming matching, the circumference distortion problem resulting from conventional view synthesis approaches is effectively avoided. The detailed implementation steps of this algorithm are given, and some running instances are presented to illustrate the results. 展开更多
关键词 Image-based rendering view synthesis epipolar geometry constraint Fourier transform dynamic prog-ramming matching.
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Corner-Based Image Alignment using Pyramid Structure with Gradient Vector Similarity
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作者 Chin-Sheng Chen Kang-Yi Peng +1 位作者 Chien-Liang Huang Chun-Wei Yeh 《Journal of Signal and Information Processing》 2013年第3期114-119,共6页
This paper presents a corner-based image alignment algorithm based on the procedures of corner-based template matching and geometric parameter estimation. This algorithm consists of two stages: 1) training phase, and ... This paper presents a corner-based image alignment algorithm based on the procedures of corner-based template matching and geometric parameter estimation. This algorithm consists of two stages: 1) training phase, and 2) matching phase. In the training phase, a corner detection algorithm is used to extract the corners. These corners are then used to build the pyramid images. In the matching phase, the corners are obtained using the same corner detection algorithm. The similarity measure is then determined by the differences of gradient vector between the corners obtained in the template image and the inspection image, respectively. A parabolic function is further applied to evaluate the geometric relationship between the template and the inspection images. Results show that the corner-based template matching outperforms the original edge-based template matching in efficiency, and both of them are robust against non-liner light changes. The accuracy and precision of the corner-based image alignment are competitive to that of edge-based image alignment under the same environment. In practice, the proposed algorithm demonstrates its precision, efficiency and robustness in image alignment for real world applications. 展开更多
关键词 Corner-based Image Alignment CORNER Detection Edge-based TEMPLATE matching Gradient Vector
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Fully automatic DOM generation method based on optical flow field dense image matching
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作者 Wei Yuan Xiuxiao Yuan +1 位作者 Yang Cai Ryosuke Shibasaki 《Geo-Spatial Information Science》 SCIE EI CSCD 2023年第2期242-256,共15页
Automatic Digital Orthophoto Map(DOM)generation plays an important role in many downstream works such as land use and cover detection,urban planning,and disaster assessment.Existing DOM generation methods can generate... Automatic Digital Orthophoto Map(DOM)generation plays an important role in many downstream works such as land use and cover detection,urban planning,and disaster assessment.Existing DOM generation methods can generate promising results but always need ground object filtered DEM generation before otho-rectification;this can consume much time and produce building facade contained results.To address this problem,a pixel-by-pixel digital differential rectification-based automatic DOM generation method is proposed in this paper.Firstly,3D point clouds with texture are generated by dense image matching based on an optical flow field for a stereo pair of images,respectively.Then,the grayscale of the digital differential rectification image is extracted directly from the point clouds element by element according to the nearest neighbor method for matched points.Subsequently,the elevation is repaired grid-by-grid using the multi-layer Locally Refined B-spline(LR-B)interpolation method with triangular mesh constraint for the point clouds void area,and the grayscale is obtained by the indirect scheme of digital differential rectification to generate the pixel-by-pixel digital differentially rectified image of a single image slice.Finally,a seamline network is automatically searched using a disparity map optimization algorithm,and DOM is smartly mosaicked.The qualitative and quantitative experimental results on three datasets were produced and evaluated,which confirmed the feasibility of the proposed method,and the DOM accuracy can reach 1 Ground Sample Distance(GSD)level.The comparison experiment with the state-of-the-art commercial softwares showed that the proposed method generated DOM has a better visual effect on building boundaries and roof completeness with comparable accuracy and computational efficiency. 展开更多
关键词 Digital Orthophoto Map(DOM) dense image matching based on optical flow field(OFFDIM) 3D point clouds with texture seamline network ACCURACY
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基于Swap-Based转移的语义分析方法研究
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作者 袁金萍 《电子设计工程》 2020年第16期39-42,共4页
为了解决英语语义分析方法的准确度低与非投射弧问题,文中提出了一种基于Swap-Based算法的AMR语义分析转移系统。通过对比List-Based与Swap-Based算法的性能,文中选取时间复杂度更低的Swap-Based算法并结合经典的AMR图和JAMR对齐器,从... 为了解决英语语义分析方法的准确度低与非投射弧问题,文中提出了一种基于Swap-Based算法的AMR语义分析转移系统。通过对比List-Based与Swap-Based算法的性能,文中选取时间复杂度更低的Swap-Based算法并结合经典的AMR图和JAMR对齐器,从而形成基于Swap-Based算法的语义分析方法。该方法实现了语义分析过程中词语语法序列顺序的改变,避免大量自然语言句子的投射弧影响。仿真与测试结果表明,该方法的英语语义分析效果良好,各项指标均优于多种经典语义、语法分析模型。 展开更多
关键词 语义分析 JAMR对齐器 Swap-based算法 Oracle分析 抽象语义表示 语义匹配
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Content-Based Lace Image Retrieval System Using a Hierarchical Multifeature Scheme
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作者 曹霞 李岳阳 +2 位作者 罗海驰 蒋高明 丛洪莲 《Journal of Donghua University(English Edition)》 EI CAS 2016年第4期562-565,568,共5页
An android-based lace image retrieval system based on content-based image retrieval (CBIR) technique is presented. This paper applies shape and texture features of lace image in our system and proposes a hierarchical ... An android-based lace image retrieval system based on content-based image retrieval (CBIR) technique is presented. This paper applies shape and texture features of lace image in our system and proposes a hierarchical multifeature scheme to facilitate coarseto-fine matching for efficient lace image retrieval in a large database. Experimental results demonstrate the feasibility and effectiveness of the proposed system meet the requirements of realtime. 展开更多
关键词 Retrieval retrieval matching hierarchical texture CBIR Hierarchical registration facilitate preprocessing
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牙轮钻头Ti(C,N)基金属陶瓷密封配副磨损研究
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作者 周已 雷鑫林 +3 位作者 唐艺凤 王儒晨 颜招强 吴兵 《润滑与密封》 CAS CSCD 北大核心 2024年第7期96-107,共12页
目前牙轮钻头金属密封环通常采用相同的金属材料,其磨损性能不佳,易造成金属密封因磨损严重而失效。为提高金属密封的磨损性能,提出采用Ti(C,N)基金属陶瓷作为牙轮钻头密封副,并开展其与不同材料配副的磨损试验,研究不同摩擦副的摩擦磨... 目前牙轮钻头金属密封环通常采用相同的金属材料,其磨损性能不佳,易造成金属密封因磨损严重而失效。为提高金属密封的磨损性能,提出采用Ti(C,N)基金属陶瓷作为牙轮钻头密封副,并开展其与不同材料配副的磨损试验,研究不同摩擦副的摩擦磨损性能和磨损形式;建立适用于牙轮钻头金属密封材料的数值磨损模型,开展Ti(C,N)基金属陶瓷与不同材料配副的双金属密封性能的数值模拟,基于磨损模型预测使用30 h后不同双金属密封的磨损体积。试验结果表明:当Ti(C,N)基金属陶瓷作为动摩擦副,9CrSi作为静摩擦副时,金属环表面平均磨损体积最小,同时摩擦因数较小,磨损性能更佳。通过试验与仿真数据对比,验证了建立的数值磨损模型适用于双金属密封。仿真结果表明:当Ti(C,N)基金属陶瓷作为动金属环,9CrSi作为静金属环时密封端面磨损体积最小,金属密封磨损性能显著提高,其接触应力最大值为23.243 MPa,能够满足密封要求。 展开更多
关键词 牙轮钻头 TI(C N)基金属陶瓷 密封配副 磨损性能
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