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A. V. Gonchar O. N. Bizyaeva V. A. Klyushnikov V. V. Mishakin 《Russian Journal of Nondestructive Testing》2016,52(10):610-616
The effect of plastic deformation of a 08Kh18N10T (analogue AISI321)-steel welded joint on electromagnetic and acoustic properties of the material has been studied by eddy-current and ultrasonic methods. It has been established that structural inhomogeneity in heat- affected zone leads to a nonuniform distribution of acoustic properties in the weld. The possibility for determining the plastic resource of material from ultrasonic data is demonstrated. 相似文献
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In nuclear industry, several kinds of components or materials are subjected to wear phenomena. As the real system cannot be fully instrumented parameters regarding contact kinematics are not perfectly known. Mock up scale 1 and parametric tribometers are used to approach these phenomena. Initially, it is essential to be able to observe worn parts taken from reality or very similar system. It is then considered essential to research on the exact conditions of the encountered and to isolate them. To be representative of the effectively activated wear mode, the tests will have to feature similar wear kinetics and aspects (including shape and dimension). The damage survey is the key point in order to be realistic for improving solutions. 相似文献
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J.-M. Frayret S. DAmours A. Rousseau S. Harvey J. Gaudreault 《International Journal of Flexible Manufacturing Systems》2007,19(4):358-391
The new economic challenges and recent trends in globalization have made it very difficult for Canadian forest product companies
to improve their financial position without the coordinated involvement of the entire company, including their supply chains
(distributed facilities, company offices, industrial customers, and distributors). Such a new level of efficiency involves
their distributed facilities and offices spread around the world, and their customers. One consequence of this new reality
is that forest products companies are now facing the need to re-engineer their organizational processes and business practices
with their partners. To do this they must adopt new technologies to support the coordination of their planning and control
efforts in a customer-centered environment. This paper first proposes a generic software architecture for development of an
experimentation environment to design and test distributed advanced planning and scheduling systems. This architecture enables
combination of agent-based technology and operations research-based tools in order to first take advantage of the ability
of agent technology to integrate distributed decision problems, and, second, to take advantage of the ability of operations
research to develop and exploit specific normative decision models. Next, this paper describes how this architecture has been
configured into an advanced planning and scheduling tool for the lumber industry. Finally, we present how an application of
this advanced planning tool is currently being validated and tested in a real manufacturing setting.
相似文献
J. GaudreaultEmail: |
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本文讨论了时差法成品油超声波流量计的基本原理、优缺点等。给出成品油典型的计量设计流程图和在线实流标定方法、检定曲线。为广大设计工程师提供出一种设计的技术选择方案。 相似文献
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X.G. Fu G.Z. Yan B. Yan H. Liu 《The International Journal of Advanced Manufacturing Technology》2006,28(5-6):596-601
A self-designed new robot system to be employed in the weld inspection of nuclear pipes is introduced in this paper. This
robot system can effectively serve as a substitute for a worker who would otherwise be exposed to a hazardous environment.
The robot system includes a half clamp as a mounting unit and a half base as circumferential rotation joint. This system can
be mounted on a branch pipe at any position. Its arm is designed with six joints for controlling the position and orientation
of the ultrasonic probe (USP), which serves as an end-effector. All of these seven joints, which yield seven degrees of freedom
(DOF), are driven by stepper motors. The communication between the Industrial Personal Computer (IPC) and Micro Chip Unit
(MCU) is based on RS-485, which allows the robot system to be operated and monitored away from a radiative environment and
can therefore limit radiation exposure for the operator. Taking the application at different working sites in nuclear power
stations into consideration, the design of the system is based on a modular structure, and the substitution of the clamp and
base, as well as the adjustment of the size of the arm links are taken into account. Finally, a test unit for the designed
robot system is set up, and experiments show that this system could meet the requirements of a real nuclear power station
environment. 相似文献
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主要介绍了相同装置事故件储备采取的几种形式,指出了它们的优缺点。并阐述随着信息系统的发展和大型石化装备国产化率的提高,实施供应商管理库存是可行的。 相似文献
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近几年来,桂林机床股份有限公司紧紧依托科技进步和科技创新,积极开发一大批以数控龙门铣床、数控床身式铣床、加工中心等为代表的高新技术产品进入我国汽车工业领域,装备汽车工业,为汽车工业的发展作出了突出贡献. 相似文献
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机械工业产品防护包装与标准化 总被引:1,自引:0,他引:1
李雪龙 《机械工业标准化与质量》2001,(5):5-9
本文介绍了机械工业产品防护包装中防锈、防潮、防水、防霉及缓冲五个防护要素在实施中应注意的问题以及有关国家包装标准的制修订情况。 相似文献
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A review is provided of techniques for digital processing of noisy X-ray computed tomography and introscopy data that are represented by halftone images. The most hazardous crack flaws placed against a background with a wide range of brightness have been studied. Difference median and slit filters are proposed for processing such images. 相似文献
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为建设现代化的钢铁工业提供先进的风机产品 总被引:2,自引:0,他引:2
一、钢铁行业动态
1.发展迅速成绩斐然
我国钢铁行业的发展,有一个过程,1996年我国钢产量突破1亿t大关,近年来持续走高,2001年1.58亿t,2002年为1.815亿t,并进口3700万t,2003年第一次超过2亿t,约为2.2亿t,2004年我国产钢2.72亿t,2005年粗钢产量首次超过3亿t,达到34936.15万t,比2004年上涨24%以上,自1996年以来,已连续十年稳居世界第一位,2005年我国的钢铁产量,相当于全世界的30%左右,为产量排名第2、3、4位国家全部产量的总和,年产1000万t钢以上的企业由2004年的两家(宝钢、鞍钢)发展到2005年的8家,有关资料估计,到目前为止,中国钢铁产能为4.7亿t。 相似文献
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I. N. Ermolov A. Kh. Vopilkin V. V. Grebennikov P. F. Samarin 《Russian Journal of Nondestructive Testing》2005,41(1):1-6
A method for sensitivity trimming during testing of welds by the bottom signal is recommended. A technique for sensitivity correction when changing from the separate to the transceiving operating mode is suggested. During the testing of austenitic welds, this technique allows taking into account the ultrasound attenuation in the built-up metal of a joint and checking of the testability with allowance for the weld structure.Translated from Defektoskopiya, Vol. 41, No. 1, 2005, pp. 3–9.Original Russian Text Copyright © 2005 by Ermolov, Vopilkin, Grebennikov, Samarin. 相似文献
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2010年11月24日,本刊记者应邀参加阿特拉斯·科普柯移动空气业务部在无锡灵山元一希尔顿逸林酒店举行的媒体见面会并采访了阿特拉斯·科普柯移动动力部总裁Geert Follens先生,期间参加了阿特拉斯·科普柯"活力体验之旅"VIP客户活动并且参观了阿特拉斯·科普柯(无锡)工厂。 相似文献
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高效节能离心通风机系列化基本模型研发即第四次风机行业联合设计第二次工作会议于2009年8月3-5日在威海召开,这项研发工作是针对行业产品落后,用户选型不尽合理,产品系列化程度低,效率低等问题提出的,这项研究成果的实现将对企业调整产品结构,实现风机产品升级带来积极的推动作用。 相似文献
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通过介绍核电重装行业砂轮相关管理和使用现状,分析了《普通磨具安全规则》、《砂轮的回转试验方法》等国家标准的相关要求和行业现状,并结合对砂轮生产和回转试验机制造企业的调研情况和结论,从安全、经济两方面对核电重装行业中配备砂轮回转试验机的必要性进行了论证和探讨。 相似文献
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E. M. Kozulin A. A. Bogachev M. G. Itkis I. M. Itkis G. N. Knyazheva N. A. Kondratiev Ľ. Krupa I. V. Pokrovsky E. V. Prokhorova 《Instruments and Experimental Techniques》2008,51(1):44-58
The CORSET time-of-flight spectrometer has been developed at the Flerov Laboratory of Nuclear Reactions of the Joint Institute for Nuclear Research (Dubna, Russia) for investigating binary products of nuclear reactions. The spectrometer has been used to study the dynamics of fusion-fission and quasi-fission of superheavy elements. The design and the main characteristics of the spectrometer, as well as the algorithms for deducing the mass-energy distributions of fragments and the cross sections of nuclear reactions, are presented. The spectrometer contains two time-of-flight arms based on microchannel-plate detectors and three telescopes, each of which is composed of two microchannel-plate detectors and one semiconductor detector. A system of four semiconductor detectors is used to obtain the absolute value of a cross section. The time resolution of the time-of-flight arms is 150 ps, which allows the time-of-flight distances to be set at 10–20 cm, thus providing a mass resolution of 3 amu and an angular resolution of 0.3°. Owing to these characteristics, the spectrometer can be used as a trigger in multidetector setups for measuring light charged particles, neutrons, and γ rays in coincidence with reaction fragments. 相似文献