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Novel evaluation method for metal workability during cross wedge rolling process

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Advances in Manufacturing 2021年第3期9卷 473-481页

作者： Ming Cheng Ming-Jie Shi petrenko vladimir Rui-Xue Wang Shi-Hong Zhang Institute of Metal Research(IMR) Chinese Academy of Sciences(CAS)Shenyang110016People’s Republic of China School of Materials Science and Engineering University of Science and Technology of ChinaHefei230026People’s Republic of China Physical-Technical Institute of the National Academy of Sciences of Belarus 220141MinskBelarus

This study presents a novel method using a disk-like sample to assess the workability of metal during the cross wedge rolling(CWR)*** this method,we can quantitatively evaluate the moment destruction which occurs at the center of the sample during *** this study,45 steel was selected to demonstrate the proposed ***,we designed a model for the tools and sample,conducted finite element simulations to analyze the distribution regulations of metal flow,stress,and strain,and evaluated the relationship between the damage and moving distance of the tool during the forming ***,we obtained the optimal deformation temperature range,rolling speed,and geometry parameters for the ***,experiments were conducted from 20℃ to 1200℃ to verify the accuracy of the developed *** was demonstrated that the model was significantly accurate in accessing the workability of 45 steel in the CWR *** proposed method could be generalized to investigate the CWR process for other materials,such as aluminum alloys,superalloys,titanium alloys,etc.

关键词： Cross wedge rolling(CWR) 45 steel Workability Damage Finite element simulation

GH4169合金楔横轧微观组织演变及动态再结晶机制

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稀有金属材料与工程 2019年第11期48卷 3556-3562页

作者：甘洪岩程明宋鸿武陈岩张士宏 vladimir petrenko 中国科学院金属研究所辽宁沈阳110016 中国科学技术大学辽宁沈阳110016 白俄罗斯科学院物理技术研究所白俄罗斯明斯克220141

采用金相显微镜和电子背散射衍射(EBSD)技术分析了楔横轧制备的GH4169合金轧件的微观组织演变和动态再结晶机制;利用数值分析方法获得了楔横轧过程中等效应变、应变速率和温度的相互关系和变化规律,并探讨对楔横轧GH4169合金动态再结晶... 详细信息

采用金相显微镜和电子背散射衍射(EBSD)技术分析了楔横轧制备的GH4169合金轧件的微观组织演变和动态再结晶机制;利用数值分析方法获得了楔横轧过程中等效应变、应变速率和温度的相互关系和变化规律,并探讨对楔横轧GH4169合金动态再结晶的影响。结果表明,楔横轧的变形特点是导致GH4169合金组织均匀和动态再结晶机制不同的主要原因,较大的断面收缩率有利于组织均匀化;轧件表面以非连续动态再结晶机制为主,而心部以连续动态再结晶机制为主。

关键词： GH4169合金楔横轧微观组织动态再结晶

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面向难变形材料精密成形的板式楔横轧机研究

中国机械工程 2022年第2期33卷 209-216页

作者：师明杰程明张士宏 vladimir petrenko GRAZHINA Valerievna Kozhevnikova 中国科学院金属研究所师昌绪先进材料创新中心沈阳110016 中国科学技术大学材料科学与工程学院沈阳110016 白俄罗斯科学院物理技术研究所明斯克220141白俄罗斯

为满足楔横轧工艺研究的需要,推动板式楔横轧机在我国的应用与发展,中国科学院金属研究所与白俄罗斯科学院物理技术研究所共同开展了高精度板式楔横轧机(IM500)的研制工作。IM500轧机采用卧式水平结构和液压驱动的单板可动设计方案,由... 详细信息

为满足楔横轧工艺研究的需要,推动板式楔横轧机在我国的应用与发展,中国科学院金属研究所与白俄罗斯科学院物理技术研究所共同开展了高精度板式楔横轧机(IM500)的研制工作。IM500轧机采用卧式水平结构和液压驱动的单板可动设计方案,由主体机械结构、液压站、电控柜三部分组成。在主体机械结构方案设计过程中,采用有限元模拟方法进行同步校核优化。在IM500轧机上,分别采用45钢、GH4169、TC11三种材料进行楔横轧实验。结果表明该轧机具有轧件尺寸精度高、维护和更换零部件方便、自动化程度高等突出优点。

关键词：难变形材料高精度板式楔横轧机液压驱动有限元模拟

GH4169合金楔横轧加工过程中动态再结晶及织构演变

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材料工程 2020年第2期48卷 114-122页

作者：甘洪岩程明宋鸿武陈岩张士宏 vladimir petrenko 中国科学院金属研究所沈阳110016 中国科学技术大学材料科学与工程学院沈阳110016 白俄罗斯科学院物理技术研究所明斯克220141白俄罗斯

为研究GH4169合金楔横轧加工过程中动态再结晶及织构演变规律,采用金相显微镜(OM)和电子背散射衍射(EBSD)对30%,50%两种断面收缩率下GH4169合金楔横轧件表层与心部的微观组织、晶体取向及织构进行分析。结果表明:GH4169合金楔横轧加工... 详细信息

为研究GH4169合金楔横轧加工过程中动态再结晶及织构演变规律,采用金相显微镜(OM)和电子背散射衍射(EBSD)对30%,50%两种断面收缩率下GH4169合金楔横轧件表层与心部的微观组织、晶体取向及织构进行分析。结果表明:GH4169合金楔横轧加工过程中,随着动态再结晶的发生,晶体取向逐渐变得随机化分布;轧制表层大角度晶界数量较轧件心部多,轧件表层织构强度变化不大,心部织构强度明显增强;经过楔横轧变形后织构发生转动,原始态织构类型为{001}〈110〉,{111}〈110〉,{111}〈011〉,轧制后主要织构类型为{001}〈010〉,{112}〈110〉,{110}〈111〉,{110}〈112〉;GH4169合金楔横轧件动态再结晶及织构演变规律是由楔横轧特殊变形特点决定的。

关键词： GH4169合金楔横轧动态再结晶织构

Method for Calculating Cartesian Coordinates of Operator’s Arm Joints for Anthropomorphic Manipulator Master⁃Slave Control Using Exoskeleton

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Journal of Harbin Institute of Technology(New Series) 2021年第5期28卷 38-46页

作者： Viacheslav petrenko Fariza Tebueva vladimir Antonov Mikhail Gurchinsky Nikolay Svistunov Institute of Information Technologies and Telecommunications North-Caucasus Federal UniversityStavropol 355009Russian Federation

The main goal of the work is to increase the accuracy of the anthropomorphic manipulator master⁃slave teleoperation by calculating the coordinates of the operator’s arm *** master device is an exoskeleton worn on the operator’s arm,and the slave device is an anthropomorphic manipulator.A method based on the solution of the forward kinematics and empirical simplifications is proposed in this *** position of the nodal points of the exoskeleton was calculated by solving the direct kinematics *** coordinates of the operator’s arm joints,which were rigidly connected to the exoskeleton nodal points,were calculated *** the operator’s arm elbow joint,which was flexibly connected to the exoskeleton,an empirical relation was *** simplified the calculation of the elbow joint *** experiment showed a decrease in the mismatch between the operator’s arm angles and the manipulator joint angles from 20.7°to 2.9°.The proposed method increases the convenience of the master⁃slave control.

关键词： robotics anthropomorphic manipulator exoskeleton motion capture teleoperation

Effects of differently polarized microwave radiation on the microscopic structure of the nuclei in human fibroblasts

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第10期11卷 801-805页

作者： Yuriy G.SHCKORBATOV vladimir N.PASIUGA Elena I.GONCHARUK Tatiana Ph.petrenko Valentin A.GRABINA Nicolay N.KOLCHIGIN Dmitry D.IVANCHENKO Victor N.BYKOV Oleksandr M.DUMIN Kharkiv National University Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine

To investigate the influence of microwave radiation on the human fibroblast nuclei,the effects of three variants of electromagnetic wave polarization,linear and left-handed and right-handed elliptically polarized,were *** conditions were:frequency(f) 36.65 GHz,power density(P) at the surface of exposed object 1,10,30,and 100 μW/cm2,exposure time 10 *** fibroblasts growing in a monolayer on a cover slide were exposed to microwave electromagnetic *** layer of medium that covered cells during microwave exposure was about 1 mm *** were stained immediately after irradiation by 2%(w/v) orcein solution in 45%(w/v) acetic *** were made at room temperature(25 °C),and control cell samples were processed in the same *** assessed heterochromatin granule quantity(HGQ) at 600× *** irradiation at the intensity of 1 μW/cm2 produced no effect,and irradiation at the intensities of 10 and 100 μW/cm2 induced an increase in *** intense irradiation induced more chromatin *** right-handed elliptically polarized radiation revealed more biological activity than the left-handed polarized one.

关键词： Human cells Chromatin Heterochromatin Electromagnetic field Elliptical polarization

遭受切尔诺贝利核电站事故所致碘-131暴露的白俄罗斯儿童和青少年甲状腺功能测定

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环境与职业医学 2013年第10期30卷 761-761页

作者： Evgenia Ostroumova Alexander Rozhko Maureen Hatch Kyoji Furukawa Olga Polyanskaya Robert J.McConnell Eldar Nadyrov Sergey petrenko George Romanov Vasilina Yauseyenka vladimir Drozdovitch Viktor Minenko Alexander Prokopovich Irina Savasteeva Lydia B.Zablotska Kiyohiko Mabuchi Alina V.Brenner

[背景]年幼时受到低或中等剂量放射性碘131(131I)暴露导致的甲状腺功能紊乱是一个公共卫生问题。然而,鲜见有关这些常见疾病的131I相关风险的定量数据。[目的]评估甲状腺功能紊乱的发病率与童年(≤18岁)时受到来自切尔诺贝利事故放射性... 详细信息

[背景]年幼时受到低或中等剂量放射性碘131(131I)暴露导致的甲状腺功能紊乱是一个公共卫生问题。然而,鲜见有关这些常见疾病的131I相关风险的定量数据。[目的]评估甲状腺功能紊乱的发病率与童年(≤18岁)时受到来自切尔诺贝利事故放射性微尘131I暴露的关联。[方法]在一项白俄罗斯队列研究中,对甲状腺功能减退、甲状腺功能亢进、自身免疫性甲状腺炎(AIT)、血清促甲状腺激素(TSH)浓度、甲状腺过氧化物酶自身抗体(ATPO)与基于测定的131I剂量估计之间的关联进行横断面分析。这项队列研究筛查10827名参加者的各种甲状腺疾病。[结果]暴露时的平均年龄(±SD)为(8.2±5.0)岁。甲状腺131I剂量的平均(中位数)估值为0.54(0.23)Gy(范围值为0.001～26.6Gy)。131I剂量与甲状腺功能减退(主要为亚临床型及抗体阴性)和血清TSH浓度呈显著正相关。每1Gy对于甲状腺功能减退症的附加比值比为0.34(95%CI:0.15～0.62),并随着暴露和检测时的年龄、存在甲状腺肿大、居住于城市/农村而显著变化。未发现与抗体阳性甲状腺功能减退、甲状腺功能亢进、AIT或ATPO升高之间有正关联的证据。[结论]在此白俄罗斯队列中,131I剂量与甲状腺功能减退之间的关联与以前报道的一项乌克兰队列的研究结果相一致。上述研究提供了强有力的证据表明,儿童期环境131I暴露的影响结果是甲状腺功能减退,而不是其他甲状腺疾病。

关键词：抗甲状腺抗体自身免疫性甲状腺炎切尔诺贝利剂量反应甲状腺功能亢进甲状腺功能减退放射性碘甲状腺