Thematische Bibliographien / Robotic welding simulation

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Auswahl der wissenschaftlichen Literatur zum Thema „Robotic welding simulation“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 2. Februar 2022

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Zeitschriftenartikel zum Thema "Robotic welding simulation"

Semjon, Ján, Mikuláš Hajduk, Rudolf Jánoš und Marek Vagaš. „Modular Welding Fixtures for Robotic Cells“. Applied Mechanics and Materials 309 (Februar 2013): 80–87. http://dx.doi.org/10.4028/www.scientific.net/amm.309.80.

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This paper describes the proposal of welding fixtures which achieves pre-arrangement of individual parts of fixture based on suitable modules. Also is focused on methodological process of their design using modularity principle and reconfigurability. Describe procedure of designing fixture with emphasis to specific requirements for welding fixtures in robotic welding. Take advantages of simple substitution of individual modules welding fixtures by database compatible with modules in 3D environment. Optimization and control of collision status is realized in simulation environment ABB Robot Studio.

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Pieskä, Sakari, Mikko Sallinen, Vesa-Matti Honkanen und Jari Kaarela. „Robotic Simulation and Web-Technology Enabling Collaboration in Digital Manufacturing“. Solid State Phenomena 113 (Juni 2006): 329–33. http://dx.doi.org/10.4028/www.scientific.net/ssp.113.329.

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In this paper, robotic simulation and web-technology are considered as collaborative tools, which enable enterprises to take steps towards digital manufacturing and product lifecycle management. Some results from developing the work of robot simulation and web-technology in research laboratories and industrial environments are presented. The application areas include robotic welding cells, robotic bending cells and robotic material handling cells. Experiences from the development work with different robot work cells confirm that digital manufacturing technology will become a practice in manufacturing networks in the future.

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Fernandes-Lara, Rodrigo, Andrés M. Moreno-Uribe und Alexandre Q. Bracarense. „Development of a hatch system for the determination of diffusible hydrogen in underwater welding“. Respuestas 25, Nr. 1 (01.01.2020): 168–77. http://dx.doi.org/10.22463/0122820x.2433.

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The design and implementation of hatch mechanism aims to optimize the development of welding simulations performed in the Robotic, Welding and Simulation Laboratory. The project is part of the upgrade technologies applied to sciences of the sea, and make it possible to evaluate the influence of welding parameters on SMAW and FCAW processes, especially as regards the content of diffusible hydrogen specimen welding in different depths. Due to the specifications imposed by the gas chromatography standards applied to welding, tests must be carried out at short intervals, which requires a fast process. This research will promote the evaluation of commercial electrodes and promote the development of new consumables.

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Redza, Mohd Ridhwan Mohammed, Yupiter H. P. Manurung, Robert Ngendang A. Lidam, Mohd Shahar Sulaiman, Mohammad Ridzwan Abdul Rahim, Noor Syahadah Yussoff und Abdul Ghalib Tham. „Transversed Residual Stress Analysis on Multipassed Fillet Weld 2D-Using FEM and Experiment“. Advanced Materials Research 576 (Oktober 2012): 181–84. http://dx.doi.org/10.4028/www.scientific.net/amr.576.181.

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In this project, the residual stress due to multipassed welding process at the fillet weld will be studied using 2D Finite Element Analysis (FEA) simulation method and experimental investigation. Due to the extensive capabilities and dedicated tools for the simulation of welding, including material deposit via element activation or deactivation and predefined or customized moving heat sources, SYSWELD 2010 was chosen as the FEA software. The material with a thickness of 9 mm was structural steel S355J2G3 for simulation and low carbon steel for the experiment. The clamping condition was selected to obtain the best relationship between simulation and experiment by using Strain Gage. The model was dedicated to multipassed welding using the robotic welding system

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Ghariblu, H., und M. Shahabi. „Path Planning of Complex Pipe Joints Welding with Redundant Robotic Systems“. Robotica 37, Nr. 6 (11.02.2019): 1020–32. http://dx.doi.org/10.1017/s0263574718001418.

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SummaryIn this paper, a path planning algorithm for robotic systems with excess degrees of freedom (DOF) for welding of intersecting pipes is presented. At first step, the procedure of solving the inverse kinematics considering system kinematic redundancy is developed. The robotic system consists of a 6 DOF robotic manipulator installed on a railed base with linear motion. Simultaneously, the main pipe is able to rotate about its longitudinal axis. The system redundancy is employed to improve weld quality. Three different simulation studies are performed to show the effect of the robotic system kinematic redundancy to plan a better path for the welding of intersecting pipes. In the first case, it is assumed that robotic manipulator base and main pipe are fixed, and the path is planned only with manipulator joints motion. In the second case, only the robot base is free to move and the main pipe is fixed, and in the third case, the main pipe is free to rotate together with the base of the manipulator. It is seen that kinematic constraints according to the system’s redundancy will help to plan the most efficient path for the welding of complex pipe joints.

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Liu, Lei, Huai Chu Dai und Ju Guang Lin. „Research on the Application of 3G Robotic Welding Guns to the Welding of Body-in-White Based on Delmia“. Advanced Materials Research 756-759 (September 2013): 237–40. http://dx.doi.org/10.4028/www.scientific.net/amr.756-759.237.

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3G welding gun is a new kind of welding guns which uses servo motor as the driving device. And it is of modularity, simplicity, robustness and high performance and has obvious advantages compared with traditional welding guns. This paper exploited robot payload check program to make comparison of the differences between OBARA welding guns and 3G welding guns. The results verified the advantages of 3G welding guns. A case study to the application of 3G welding guns to the body side was conducted, and Delmia, a 3D platform for robotic simulation and OLP, was used to create the robot welding programs. Finally, the timing chart of welding process by means of 3G welding guns was analyzed.

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Sorenti, Peter. „Efficient robotic welding for shipyards ‐ virtual reality simulation holds the key“. Industrial Robot: An International Journal 24, Nr. 4 (August 1997): 278–81. http://dx.doi.org/10.1108/01439919710176354.

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Redza, Mohd Ridhwan Mohammed, Yupiter H. P. Manurung, Robert Ngendang Ak. Lidam, Mohd Shahar Sulaiman, Mohammad Ridzwan Abdul Rahim, Sunhaji Kiyai Abas, Ghalib Tham und Chan Yin Chau. „Distortion Analysis on Multipassed Butt Weld Using FEM and Experimental Study“. Advanced Materials Research 311-313 (August 2011): 811–14. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.811.

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This paper investigates the simulation technique for analyzing the distortion behavior induced by welding process on welded plate which was clamped on one side. This clamping method is intended to enable the investigation of the maximum distortion on the other side. FEA software SYSWELD was employed to predict multipassed butt weld distortion of low carbon steel with thicknesses of 6 mm and 9 mm. The simulation begins with the development of model geometry and meshing type followed by suitable selection of heat source model represented by the Goldak’s double ellipsoid model. Other parameters such as travel speed, heat input, clamping method etc. were determined. The model is dedicated for multipass welding techniques using Gas Metal Arc Welding (GMAW). The experimental works were conducted by using Robotic welding process.

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Kvasnica, M., Š. Petráš und I. Kočiš. „Simulation of Positioning Accuracy of the Torch in Adaptive Robotic Welding System“. IFAC Proceedings Volumes 20, Nr. 12 (September 1987): 293–98. http://dx.doi.org/10.1016/s1474-6670(17)55646-3.

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Sharma, Aman, Pradeep Kumar Singh und Rohit Sharma. „Numerical Simulation of Temperature Distribution in Robotic Arc welding by ARISTOTM Robot“. IOP Conference Series: Materials Science and Engineering 1116, Nr. 1 (01.04.2021): 012117. http://dx.doi.org/10.1088/1757-899x/1116/1/012117.

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Dissertationen zum Thema "Robotic welding simulation"

De, Backer Jeroen, und Bert Verheyden. „Robotic Friction Stir Welding for Automotive and Aviation Applications“. Thesis, University West, Division of Production Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-2171.

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Friction Stir Welding (FSW) is a new technology which joins materials by using frictional heat. Inthe first part of this thesis, a profound literature study is performed. The basic principles, therobotic implementation and possibilities to use FSW for high strength titanium alloys areexamined. In the next phase, a FSW-tool is modelled and implemented on an industrial robot in arobot simulation program. Reachability tests are carried out on car body parts and jet engineparts. By using a simulation program with embedded collision detection, all possible weldinglocations are determined on the provided parts. Adaptations like a longer FSW-tool and amodified design are suggested in order to get a better reachability. In different case studies, thenumber of required robots and the reduction of weight and time are investigated and comparedto the current spot welding process.

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Goh, Kim-Huat. „WRAPS : a programming and simulation software tool for integrated robotic welding“. Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/28002.

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The outcome of this research is a low-cost off-line programming and simulation system called WRAPS for robotic arc-welding. WRAPS is an acronym for Welding Robot Adaptive Programming and Simulation. The package was developed on a Future FX20 microcomputer with 640 kbytes RAM under the Concurrent CP/M-86 operating system. It is written in the 'C' language and graphics capabilities is provided via the Graphics System eXtension (GSX) of Digital Research. WRAPS is menu-driven and utilises windows and icons through custom software for user interface.

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Adolt, Lukáš. „Virtuální zprovoznění robotizovaného pracoviště pro obloukové svařování“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443715.

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This diploma thesis is focused on the design of a robotic workplace for arc welding and its subsequent virtual commissioning. The summary deals with knowledge from industrial robotics and arc welding, the system analysis is focused on the composition of the workplace and the principle of arc welding, including acting influences. In the practical part, several variants of the solution are proposed, the most suitable variant is processed in the form of a 3D model. This model is then simulated, including all processes, a control program is created, and virtual commissioning of the workplace is demonstrated.

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Kaňa, Vojtěch. „Návrh robotické buňky pro bodové svařování“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400978.

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The aim of this thesis was to design a robotic cell for spot welding of seat reinforcement and the subsequent automatic transport of the part from the cell. Both construction plan and process simulation in Process Simulate should be performed there. It is therefore an application for the automotive industry. The cell consists of a device into which the operator places the parts and is placed on the designed turntable. The welding is performed by two Kuka robots and welding tongs attached to them. The thesis deals with the design of the structure and the choice of individual components, as well as their appropriate deployment in the cell. Along with the design of the cell, the simulation was processed in the software. The output of the thesis is a 3D model of the workplace, simulation of the whole process of welding and manipulation and evaluation of the cell cycle using the RCS module.

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Majer, Tomáš. „Návrh pracoviště s průmyslovým robotem“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-382109.

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This diploma thesis deals with design of a robotized workplace for welding truss structures. First, the target construction that the work focuses on is shown. Then the functions of the entire workplace are designed, including the procedures for activities and the gross displacement of the used components and their layout. The next chapter itemize specific robots and components. This, along with the solution of safety and ergonomics, makes the layout of the entire workplace more precise. Everything is completed by creating a simulation model in Siemens Tecnomatix Process Simulate, where all the welding operations are simulated.

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Lukačovič, Peter. „Návrh robotické buňky pro svařování a manipulaci“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-382111.

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The purpose of this master’s thesis is a design of the robotic cell for spot welding followed by manipulation with parts assigned for automotive industry. The cell should consist of a rotary table operated by a process operator and set of six-axis robots for spot welding and manipulation with parts. The thesis also describes the design of the end effectors of all robots, the design of rotary table with regard to welding technology and configuration of the cell to obtain maximal efficiency. The output of the thesis is 3D model, workflow simulation, evaluation of the production times and operator work conditions.

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Kysela, Martin. „Návrh robotické linky pro svařování ocelového rámu“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443245.

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The aim of this diploma thesis is to design a cell for robotic arc welding of steel frame. Three possible solutions are provided and one of them is to be chosen to work out. Construction designs of fixture, machine guarding and material racks were created and devices and components required for cell functionality were chosen. All of that with regard to the safety of workplace operators.The result is 3D model of welding cell, it´s implementation and virtual commissioning in the simulation software Process simulate. We will verify the weldability of assigned part, find out the production cycle, eliminate error and lastly the technical and economic evaluation will be work out.

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Sobotka, Tomáš. „Návrh pracoviště s průmyslovým robotem“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-379010.

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Design of robotic cell for welding operations at specific production part including unchangeable process technology. Design of subsystems provides required functions and abilities. Risk management of entire model and its transformation into Siemens Process Simulate simulation software including creation task-cycle simulation.

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Rolinc, Lukáš. „Návrh svařovací robotické buňky“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400974.

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The diploma thesis deals with the design of a workplace with robots designed for spot welding of wire reinforcement of the car seat. After analyzing and description of the given task, the workplace concept is chosen based on the input parameters. Subsequently, sub-systems of the production cell are designed and selected for this concept. For example the design of clamping fixtures, rotary table, input and output storage magazines or the selection of welding guns and robots are solved. The workplace is designed to ensure operator safety and protection. The production cycle of the designed workplace is simulated in Siemens Process Simulate to verify functionality and required productivity of the production line. Technical and economic evaluation of the proposed solution is also included in this diploma thesis.

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Šuba, Marek. „Digitální zprovoznění robotizovaného výrobního systému pro odporové navařování“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443726.

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The subject of this diploma thesis is the simulation and digital commissioning of a robotic production system for welding elements such as studs on sheet metal parts. The basis of the work is search of information related to industrial robots, PLC control, tools used for welding, fixtures, manipulators, sensors, safety and protection elements commonly used in such production systems. The second part of the work deals with the given problem and it is a virtual commissioning of the given concept of a robotic production system. This means creating its simulation model in the Process Simulate environment, selecting robots, creating robotic trajectories, collision analysis, creating sensors, signals and optimization. Last part includes the connection of the simulation model with the software S-7PLCSIM Advanced and TIA Portal, the creation of control PLC logic in the form of a program, visualization and verification of their functionality using the above-mentioned connection with the simulation model.

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Bücher zum Thema "Robotic welding simulation"

Goh, Kim Huat. W.R.A.P.S.: A programming and simulation software tool for integrated robotic welding. 1988, 1988.

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Buchteile zum Thema "Robotic welding simulation"

Fauadi, Muhammad Hafidz Fazli Bin Md, Fairul Azni Jafar, Lau Ong Yee, Mohd Nazmin Bin Maslan und Saifudin Hafiz Yahya. „Modeling and Path Planning Simulation of a Robotic Arc Welding System“. In Lecture Notes in Electrical Engineering, 327–34. Singapore: Springer Singapore, 2014. http://dx.doi.org/10.1007/978-981-4585-42-2_38.

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Deepak, B. B. V. L., C. A. Rao und B. M. V. A. Raju. „Weld Seam Tracking and Simulation of 3-Axis Robotic Arm for Performing Welding Operation in CAD Environment“. In Lecture Notes in Mechanical Engineering, 405–15. New Delhi: Springer India, 2016. http://dx.doi.org/10.1007/978-81-322-2740-3_39.

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Ma, Guo-hong, und Cong Wang. „Layer Simulation on Welding Robot Model“. In Electrical Engineering and Control, 203–7. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21765-4_25.

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Wang, Xuewu, Yong Min, Xin Zhou und Xingsheng Gu. „Numerical Simulation of Robot Base Welding Process“. In Transactions on Intelligent Welding Manufacturing, 127–39. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-13-8192-8_6.

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Luo, Haitao, Jia Fu, Min Yu, Changshuai Yu, Tie Liu, Xiaofang Du und Guangming Liu. „Simulation analysis of welding precision on friction stir welding robot“. In Advances in Energy Science and Equipment Engineering II, 1537–43. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.1201/9781315116174-133.

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Chao, Yongsheng, und Wenlei Sun. „Motion Planning and Simulation of Multiple Welding Robots Based on Genetic Algorithm“. In Intelligent Robotics and Applications, 193–202. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-65298-6_18.

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Sikström, F., M. Ericsson, A. K. Christiansson und K. Niklasson. „Tools for Simulation Based Fixture Design to Reduce Deformation in Advanced Fusion Welding“. In Intelligent Robotics and Applications, 398–407. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-88518-4_43.

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Zhang, Tao, und Shanben Chen. „Path Planning and Computer Simulation of a Mobile Welding Robot“. In Lecture Notes in Electrical Engineering, 421–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19959-2_51.

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Wang, Nianfeng, Feiyue Zhang und Xianmin Zhang. „Kinematics Analysis and Simulation of Two-Robot Coordination in Welding“. In Lecture Notes in Electrical Engineering, 237–48. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2875-5_20.

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Goh, K. H., und J. E. Middle. „WRAPS System: A Tool for Welding Robot Adaptive Programming and Simulation“. In Advances in Manufacturing Technology, 255–60. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4757-1355-8_34.

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Konferenzberichte zum Thema "Robotic welding simulation"

Chiou, Richard Y., Michael G. Mauk, Irina C. Husanu, Tzu-Liang (Bill) Tseng und Sowrirajan Sowmithran. „Virtual Reality Laboratory: Green Robotic Ultrasonic Welding“. In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11912.

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Abstract This paper describes recent developments in an ongoing project to develop a series of virtual reality (VR) based robotic ultrasonic welding laboratory simulations, designed to impress upon users the importance of proper laboratory safety procedures and the potential consequences of not doing so. Robotic ultrasonic welding virtual reality laboratory is developed as an educational project and laboratory component for undergraduate engineering curricula. Ultrasonic welding is a relatively fast, clean process that does not require adhesives, binding agents, solders, fluxes, or solvents. However, it can only be done either by an experienced welder or a welding robot since it is difficult to weld due to high-frequency mechanical vibration and complex welding path. This paper explores the use of virtual reality simulation of industrial robots and its application in the field of industrial design and automation with lab-on-a-chip devices. With a virtual reality based welding simulator, learning ultrasonic welding can be made easier and faster. Accordingly, educational approaches that combine and integrate multiple disciplines afford more efficient and effective use of time and resources. A concluding section discusses the student learning outcomes during this project.

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Li, Yao, und Thenkurussi Kesavadas. „Welding Robotic Co-Worker Using Brain Computer Interface“. In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87503.

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Robotic co-workers are an emerging generation of physical robots promises to transform manufacturing with its ability to communicate and collaborate, both robot-to-robot and robot-to-human, opening the way to greater innovation and productivity. We designed a welding robotic co-worker which observes industrial part, searches welding seams, plans welding trajectory, and simulates welding result automatically. It largely benefits small and medium-sized manufacturing enterprises (SMEs) by allowing manufacturers handle low-volume orders without re-programming. As a co-worker, the robot communicates with its operator though brain computer interface (BCI) as well as guarantees the operator’s safety. We demonstrated the performance of this robot using a human subject study in welding simulation environment.

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Dàvila-Rìos, Ignacio, Luis M. Torres-Trevino und Ismael Lòpez-Juàrez. „On the Implementation of a Robotic Welding Process Using 3D Simulation Environment“. In 2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA). IEEE, 2008. http://dx.doi.org/10.1109/cerma.2008.71.

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Dahari, Mahidzal, und Jian-Ding Tan. „Forward and inverse kinematics model for robotic welding process using KR-16KS KUKA robot“. In 2011 Fourth International Conference on Modeling, Simulation and Applied Optimization (ICMSAO). IEEE, 2011. http://dx.doi.org/10.1109/icmsao.2011.5775598.

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Wang, Zhenzhou. „Automatic Segmentation of Fuzzy Laser Lines with Sub-Pixel Accuracy from the Uneven Background During Robotic Arc Welding“. In 2016 7th International Conference on Intelligent Systems, Modelling and Simulation (ISMS). IEEE, 2016. http://dx.doi.org/10.1109/isms.2016.13.

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Juschanin, Denis, Fisseha M. Alemayehu und Stephen Ekwaro-Osire. „Low Frequency Vibration Consideration in Tool-Path Computation of Two-Link Serial Manipulator for Improved Accuracy“. In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39400.

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Industrial robots are flexible and cost-efficient tools for a multitude of applications such as, polishing, grinding, deburring, and welding. However, their utilization in machining tasks is currently limited due to insufficient position accuracy. This study aims to answer the research question: ‘Does including low frequency vibrations (mode coupling chatter) in tool path computation improve accuracy?’ For this purpose, the current paper focuses on setting-up a robust and flexible simulation framework. The framework implements a predictive cutting force method into a multibody dynamic (MBD) model of an industrial robot. The framework is structured in an extendable fashion for future research tasks. Future work will include mode coupling chatter into the MBD model to help mitigate the effects of chatter in robotic machining process, which in turn will increase tool-path accuracy.

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Tesic, Rade, und Pat Banerjee. „Design of Virtual Objects for Exact Collision Detection in Virtual Reality Modeling of Manufacturing Processes“. In ASME 1998 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/detc98/dfm-5733.

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Abstract Collision detection becomes a key issue when we want to model interactions between general, nonconvex objects in virtual reality applications which arise in manufacturing process domain. Despite significant progress which has been made in developing efficient, exact collision detection algorithms for convex objects, limited and slow progress has been reported in developing collision detection algorithms for general, nonconvex objects. To narrow this gap we introduce a concept of virtual objects which extends applicability of exact collision detection algorithms to nonconvex objects. This paper presents a methodology to encapsulate into virtual objects the surface patches of interest for collision detection as well as the automatic procedures for creation of virtual objects and for partitioning them into convex pieces. The collision detection technique described in this paper is best suited for interactive simulation and animation applications where high accuracy of object contact modeling is required. Examples include virtual assembly; mobile robot simulation; and simulation of manufacturing processes where accurate modeling of near-miss detection is essential, e.g. robotic painting, robotic welding, and NC machining operations.

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Hamieh, Abdallah, Mike A. Kheirallah, Badih Jawad, Liping Liu und Vernon Fernandez. „Improving the Heat Dissipation From a Pressure Wheel of a Laser Robotic End-of-Arm Tooling Using Different Geometrical Designs and Materials“. In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86880.

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The automotive industry corporations noticed the advantages of automated laser welding. Robot laser welding systems have immediately attracted their interests for bringing down the production costs and delivering higher-quality items. The objective of this research is to study how to enhance heat dissipation to endorse a better performance of the pressure wheel, and help achieve a longer life cycle. Transient thermal analysis of the pressure wheel was conducted using ANSYS workbench. The work studied the effects of different design models and materials on the thermal performance of pressure wheel assembly during the cooling period. Numerical simulations were performed on both solid and geometrically ventilated wheels for enhancing the heat dissipation performance of the wheel. Different materials were also be tested and compared. The analysis will support the design process by monitoring different parameters in terms of performance, heat loss and manufacturing cost. A comparison was made for two different designs each with three different materials and the best design was selected. The simulation results in a period of 50 seconds cooling time showed that the temperature dropped with the 1st design (full solid wheel) made of tungsten from an initial temperature Ti = 500 K to a final temperature of Tf = 434.5 K. Tungsten was found to have better heat dissipation compared to stainless steel and cast iron. For the 2nd design (geometrically ventilated wheel) made of tungsten, the temperature drops from Ti = 500 K to Tf = 422.1 K. Comparing the two designs, the geometrically ventilated wheel was proved to be cooled faster. The present work will help improve the performance of pressure wheel in the welding industry by providing computational results for successive design testing and data validation.

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Keinänen, Heikki, Pekka Nevasmaa, Juha Kuutti, Caitlin Huotilainen, Iikka Virkkunen, Mikko Peltonen und Henrik Sirén. „A52M/SA502 Dissimilar Metal RPV Repair Weld: Evaluation of Different Techniques“. In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21233.

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Abstract As part of nuclear power plant ageing management, the increased probability of a need of repair welding must be taken into account along with the increase of plant lifetime. An essential prerequisite for successful and safe repair welding is that the applied welding procedures have been properly validated and qualified prior to their use. For instance, if no post-weld heat treatment can be performed and the desired tempering effect has to be based on temper-bead technique, a user needs to scan among several available repair welding procedures. A decision has to be made which of the procedures provides the maximum desired tempering effect with the case in question. This research is a part of a larger experimental effort developing repair welding techniques, and is a part of the Finnish Nuclear Power Plant Safety Research Programme SAFIR2022. The currently studied experimental repair welding case is a low-alloy steel mock-up with an austenitic cladding. Repair welding is assumed to represent a ‘worst-case’ scenario where a postulated linear crack-like defect exists beneath the cladding and might extend across the interface into the reactor pressure vessel steel side. This postulated defect will be removed by machining, and the thereby machined groove will be filled by repair welding using a nickel-base super alloy 52M filler metal by cold metal transfer-gas metal arc welding with a robotic arm. In this paper, different repair welding techniques and alternatives are shortly surveyed based on existing literature. Overall, published documentation was sparse. While only few studies were considered relevant in terms of established links to actual repair cases of under-cladding defects in reactor pressure vessels, others were mainly for modelling and simulation purposes without e.g. cladding groove preparation or the use of irradiation-embrittled material. Most of these procedures were based on the use of nickel-base alloy filler metal in the combination with temper-bead welding technique, with the aim at omitting both preheating and post-weld heat treatment. The main challenge in the repair weld design is to optimise all relevant welding parameters, including the thermal efficiency of temper-bead welding, in order to obtain a sound, defect-free weld with controlled reactor pressure vessel steel heat affected zone maximum hardness. In the simulations presented in the paper, the goal was to compute the resulting deformations, strains and stresses induced by the repair process and make a-priori estimates of the effectiveness of different repair techniques based on the numerical predictions. The numerical analyses allow the comparison of the procedures and enable selecting the one with most efficient combination of weld thermal cycles in terms of tempering and normalisation effects. The prediction of prevailing residual stresses is also important when further application of the component is considered. The paper is followed by Part II, in which the topics of experimental evaluation and material characterization of the repair weld are presented.

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Li-Ding, Chen, und Liu Jin. „The research of key technologies and simulation of industrial robot welding production line“. In 2017 2nd International Conference on Advanced Robotics and Mechatronics (ICARM). IEEE, 2017. http://dx.doi.org/10.1109/icarm.2017.8273151.

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