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Using multiple regression analysis to predict directionally solidified TiAl mechanical property

Journal of Materials Science & Technology 2022年第9期104卷 285-291页

作者： Seungmi Kwak Jaehwang Kim Hongsheng Ding xuesong xu Ruirun Chen Jingjie Guo Hengzhi Fu National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China Carbon Materials Application R&D Group Korea Institute of Industrial TechnologyJeonju 54853 Republic of Korea

The mechanical properties of TiAl alloy prepared by directional solidification were predicted through a machine learning algorithm *** composition,input power,and pulling speed were designated as input variables as representative factors influencing mechanical properties,and multiple linear regression analysis was conducted by collecting data obtained from the *** this study,the R^(2)value of the tensile strength prediction result was 0.7159,elongation was 0.8459,nanoindentation hardness was 0.7573,and interlamellar spacing was *** the R^(2)value of the elongation obtained through the analysis was higher than the R^(2)value of the tensile strength,it was confirmed that the elongation had a closer relationship with the input variables(composition,input power,pulling speed)than the tensile *** adding the elongation to the tensile strength as an input variable,it was observed that the R^(2)value was further *** tensile test prediction results were divided into four groups:The group with the lowest residual value(predicted value-actual value)was designated as group A,and the group with the largest residual value was designated as group *** comparing the values of group A and group D,more overpredictions occurred in group A,while more under predictions occurred in group *** the residuals and R^(2)values,the cause of the well-prediction was studied,and through this,the relationship between the mechanical properties and the microstructure was quantitatively investigated.

关键词： Directionally solidified TiAl alloy Microstructure control Tensile strength Interlamellar space Prediction Multiple linear regression

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Near-infrared to visible up-conversion emissions of Er^(3+) doped Al_2O_3 powders derived from the sol-gel method

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Chinese Science Bulletin 2007年第19期52卷 2626-2629页

作者： DONG Bin GAO YaChen xu xuesong SUN Min LI Lei School of Science Dalian Nationalities University Dalian 116600 China School of Materials Science and Engineering Dalian University of Technology Dalian 116024 China Colleae of Electronic Enaineerincl Heiloncliiancl University Harbin 150080 China3 College of Electronic Engineering Heilongjiang University Harbin 150080 China Department of Physics Dalian Maritime University Dalian 116029 China

The Er3+ doped Al2O3 powders were prepared by the sol-gel method using the aluminium isopropoxide [Al(OC3H7)3]-derived Al2O3 sols with addition of the erbium nitrate [Er(NO3)3.5H2O]. The different phase structure, including three crystalline types of (Al,Er)2O3 phases, γ, θ, α, and two Er-Al-O phases, ErAlO3 and Al10Er6O24, was obtained with the 1 mol% Er3+ doped Al2O3 powders at the different sintering temperatures of 600―1200℃. The green and red up-conversion emissions centered at about 523, 545 and 660 nm, corresponding respectively to the 2H11/2, 4S3/2→4I15/2 and 4F9/2→4I15/2 transitions of Er3+, were detected by a 978 nm semiconductor laser diodes excitation. The phase structure and OH content had evident influence on the up-conversion emissions intensity. The maximum intensities of both the green and red emissions were obtained respectively for the Er3+ doped Al2O3 powders sintered at 1200 ℃, which was composed mainly of α-(Al,Er)2O3, less of ErAlO3 and Al10Er6O24 phases, and with the least OH content. The two-photon absorption up-conversion process was involved in the green and red up-conversion emissions of the Er3+ doped Al2O3 powders.

关键词：铒添加剂 Al2O3 吸收作用红外线十字延伸

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Twin and twin intersection phenomena in a creep deformed microalloyed directionally solidified high Nb containing TiAl alloy

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Journal of Materials Science & Technology 2022年第32期127卷 115-123页

作者： xuesong xu Hongsheng Ding Haitao Huang He Liang Hao Guo Ruirun Chen Jingjie Guo Hengzhi Fu National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China

The creep behavior of a directionally solidified TiAl alloy with a high Nb content after microalloying by the addition of small amounts of W,Cr,and B elements was investigated by scanning electron microscopy and transmission electron *** means of directional solidification and microalloying,a TiAl alloy with a fine and uniform microstructure and continuous columnar crystals was ***-density dislocations,deformation nanotwins,and twin intersections were observed inγ*** results show that,in comparison with the ternary TiAl alloy,the microalloyed high Nb containing TiAl alloy exhibited better creep properties at 760℃and 275 *** decrease in stacking fault energy can promote dislocation dissociation and the formation of deformation twins,and the twin intersections can hinder the movement of dislocation to enhance the creep performance of the TiAl alloy.

关键词： TiAl alloy Directional solidification Deformation nanotwins Twin intersections Creep Stacking fault

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Switchable optical nonlinear properties of W_(18)O_(49) nanowires by Ag nanoparticles supported

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Science China(Physics,Mechanics & Astronomy) 2017年第11期60卷 81-84页

作者： Yang Liu xuesong xu Yang Chen ZhenYi Zhang YaChen Gao KuiChao Liu LiDong Gong Bin Dong School of Chemistry and Chemical Engineering Liaoning Normal University Department of Physics Dalian Maritime University Mulnicipal Wastewater Control Center of Liaoning Province Key Laboratory of Photosensitive Materials and Device of Liaoning Province Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission School of Physics and Materials Engineering Dalian Minzu University Key Laboratory of Electronics Engineering College of Heilongjiang Province Heilongjiang University

During the past decades,nonlinear optical（NLO）materials have attracted special interest because of their potential applications in photonic devices,such as optical switching,frequency conversion and electro-optic **... 详细信息

关键词： photonic switching prepare aperture optic Figure finding normalized doping focusing

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Theoretical study on stereodynamics of H+NeH^+(v=0,j=0)→H_2^++Ne reaction

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Chinese Science Bulletin 2012年第36期57卷 4712-4717页

作者： YIN ShuHui ZOU JingHan GUO MingXing xu xuesong GAO Hong LI Lei CHE Li Department of Physics Dalian Maritime UniversityDalian 116026China Environmental Science and Engineering College Dalian Maritime UniversityDalian 116026China

Stereodynamics of reaction H + NeH+(v = 0,j = 0) → H2+ + Ne is investigated by quasi-classical trajectory method using a new potential energy surface constructed by Lv et *** distributions of P(r),P(r) and PDDCSs are calculated at four different collision *** rotational polarization of product H2+ presents different characters at different collision *** product rotational angular momentum vector j' is not only aligned,but also oriented along the direction perpendicular to the scattering *** the increase of collision energy,the rotation of product molecule has a preference of changing from the "in-plane" mechanism to the "out-of-plane" *** the title reaction is mainly dominated by the direct reaction mechanism,the indirect mechanism plays a role when the collision energies are low.

关键词：反应机制立体碰撞能量 NE 经典轨迹分布计算势能面角动量

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Profiling of Ubiquitination Modification Sites in Talin in Colorectal Carcinoma by Mass Spectrometry

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Chemical Research in Chinese Universities 2019年第3期35卷 377-381页

作者： WANG Ke QIAO Lu LI Xiaoou LI Shimeng WANG Yimin xu xuesong HE Chengyan FANG Ling China-Japan Union Hospital Jilin UniversityChangchun 130033P.R.China Tumor Hospital of Jilin Province Changchun 130012P.R.China

Talin protein was partially purified from human colorectal carcinoma tissues, which was subject to tryptic digestion. Immunoaffinity precipitation with specific antibodies that recognize diglycyl-lysine(Lys) remnants from tryptic digestion of ubiquitinated peptides was used to enrich ubiquitinated sites in talin. Mass spectrometry coupled with capillary reverse-phase high-performance liquid chromatography was used to analyze tlie enriched peptides. Specifically, four peptides containing diglycyl-Lys remnants from talin, namely, TAK(ub)VLVEDTK, QQQYK(ub) FLPSELRDEH, K(ub)STVLQQQYNR, and EGILK(ub)TAK can be determined using mass spectrometric data. This study provides an analytical method for further study in tlie relationship between ubiquitination modification of talin and its biological activity in colorectal cancer tissues with different pathological processes.

关键词： Talin Ubiquitination Colorectal carcinoma Mass spectrometry

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Innovative Nanchang

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China Today 2012年第6期61卷 80-81页

作者： WU MEILING & xu xuesong

THE Nanchang National HighTech Industrial Development Zone sits in a wetland on the iconic Yangtze River. Twenty years ago, Jiangxi Province’s capital Nanchang was chosen as central China’s first national eco-industrial zone. Since then locals’ dedication and hard work has made the zone a great success. Established in 1991, it has achieved a 30 percent annual increase in its main business income in recent years. Though the zone covers only 0.08 percent of Nanchang’s land,

关键词：南昌高新技术产业开发区创新中部地区标志性工业区江西省工作带

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用密度泛函方法研究质子化苯基丙酮-水团簇

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Chinese Journal of Chemical Physics 2005年第6期18卷 947-951页

作者：许雪松大连海事大学物理系大连116026

应用密度泛函B3LYP/631+G(d,p)计算方法,对质子化苯基丙酮水团簇这个弱相互作用体系进行了全自由度能量梯度优化,得到该系列团簇的稳定结构.结果表明,H+C8H8OH2O团簇的形成过程为一无能垒的反应过程,在质子与C8H8O分子中O原子的距离为1.... 详细信息

应用密度泛函B3LYP/631+G(d,p)计算方法,对质子化苯基丙酮水团簇这个弱相互作用体系进行了全自由度能量梯度优化,得到该系列团簇的稳定结构.结果表明,H+C8H8OH2O团簇的形成过程为一无能垒的反应过程,在质子与C8H8O分子中O原子的距离为1.015时达到平衡几何.对H+C8H8O(H2O)n(n=1,2,3)团簇,质子位于C8H8O分子和水分子之间,且随着团簇尺寸的增加,质子与C8H8O分子中O原子之间的距离也增加;C8H8OH+H2O可以视为溶剂壳.而对H+C8H8O(H2O)n(n=4,5,6,7,8)团簇,质子位于两个水分子之间,形成H5O2+结构,即C8H8OH5O2+为该系列团簇的中心结构,新增加的水分子以从不同方向进攻这个中心的方式形成更大尺寸的团簇.

关键词：质子化团簇 B3LYP方法

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Multi-model ensemble learning for battery state-of-health estimation:Recent advances and perspectives

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Journal of Energy Chemistry 2025年第1期100卷 739-759页

作者： Chuanping Lin Jun xu Delong Jiang Jiayang Hou Ying Liang Zhongyue Zou xuesong Mei State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Shaanxi Key Laboratory of Intelligent Robots School of Mechanical Engineering Xi'an Jiaotong University Department of Electrical Engineering and Automation Luoyang Institute of Science and Technology School of Mechanical Engineering Hangzhou Dianzi University

The burgeoning market for lithium-ion batteries has stimulated a growing need for more reliable battery performance monitoring. Accurate state-of-health(SOH) estimation is critical for ensuring battery operational performance. Despite numerous data-driven methods reported in existing research for battery SOH estimation, these methods often exhibit inconsistent performance across different application scenarios. To address this issue and overcome the performance limitations of individual data-driven models,integrating multiple models for SOH estimation has received considerable attention. Ensemble learning(EL) typically leverages the strengths of multiple base models to achieve more robust and accurate outputs. However, the lack of a clear review of current research hinders the further development of ensemble methods in SOH estimation. Therefore, this paper comprehensively reviews multi-model ensemble learning methods for battery SOH estimation. First, existing ensemble methods are systematically categorized into 6 classes based on their combination strategies. Different realizations and underlying connections are meticulously analyzed for each category of EL methods, highlighting distinctions, innovations, and typical applications. Subsequently, these ensemble methods are comprehensively compared in terms of base models, combination strategies, and publication trends. Evaluations across 6 dimensions underscore the outstanding performance of stacking-based ensemble methods. Following this, these ensemble methods are further inspected from the perspectives of weighted ensemble and diversity, aiming to inspire potential approaches for enhancing ensemble performance. Moreover, addressing challenges such as base model selection, measuring model robustness and uncertainty, and interpretability of ensemble models in practical applications is emphasized. Finally, future research prospects are outlined, specifically noting that deep learning ensemble is poised to advance ens

关键词： Lithium-ion battery State-of-health estimation Data-driven Machine learning Ensemble learning Ensemble diversity

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波浪动力滑翔机母船与牵引机运动传递关系

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上海交通大学学报 2018年第2期52卷 127-132页

作者：张成翊徐雪松上海交通大学船舶海洋与建筑工程学院上海200240

为研究波浪动力滑翔机上端母船与水下牵引机的运动关系,将连接母船与牵引机的缆绳离散成多个微段进行分析,根据每个微段动力学分析结果列出动力平衡方程,得到母船与牵引机运动传递关系的方程组,然后用MATLAB编程求解.根据数值计算结果,... 详细信息

为研究波浪动力滑翔机上端母船与水下牵引机的运动关系,将连接母船与牵引机的缆绳离散成多个微段进行分析,根据每个微段动力学分析结果列出动力平衡方程,得到母船与牵引机运动传递关系的方程组,然后用MATLAB编程求解.根据数值计算结果,发现波浪动力滑翔机在海面上自主航行时速度时刻在变化,但变化相对平稳,母船水平速度变化幅度相较牵引机要大,由于柔性缆绳的作用,波浪动力滑翔机的速度会随着海面波浪的变化而迅速改变;此外,较短的缆绳有利于波浪动力滑翔机的运动传递.

关键词：波浪动力滑翔机动力学分析运动传递柔性缆绳

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