Virtual Reality Based Welding Training Simulator with 3D Multimodal Interaction
In this paper, we present a prototype Virtual Welding Simulator, which supports interactive training of welding process by using multimodal interface that can deliver realistic experiences. The goal of this research is to overcome difficult problems by using virtual reality technology in training tasks where welding is treated as a principal manufacturing process. The system design and implementation technical issues are described including real-time simulation and visualization of welding bead, providing realistic experience through 3D multimodal interaction, presenting visual training guides for novice workers, and visual and interactive interface for training assessments. According to the results from an initial user study, the prototype VR based simulator system appears to be helpful for training welding tasks, especially in terms of providing visual training guides and instant training assessment.
- [Show abstract] [Hide abstract] ABSTRACT: In this paper, we present a virtual training system which realistically represents the situation of real welding. First of all, we built a database about welding outputs such as the shape of bead which is the deposit outcome resulting from inputs of real welding conditions and operations. Second, we performed an analysis of relations between input variables and output variables, and the major and minor factors influencing on the welding shape were classified. Finally, we designed an estimation process of outputs by various inputs such as user's movement, and constructed the method of graphical representation for real-time visualization from heuristic sources. Additionally, we also installed a welding simulator for a teacher and trainees, which can support not only a variety of welding situations but prompt evaluation of results and educational guide by optimal welding conditions.
- [Show abstract] [Hide abstract] ABSTRACT: Although many welding processes in metal work have been robotized recently, manual welding is still indispensable in custom-made production and high-mix low-volume production. Hence, skilled welders are needed widely in metal work industry. On the other hand, many people have little inducement to be a new welder because of high physical risk and severeness in skill training. Virtual Reality technology may give an effective solution on it and various high-tech VR systems for the training have been proposed so far. However, high tech is not always necessary to build a VR training system, as long as skill to be trained is analyzed and situation is confined. In this paper, the authors have proposed a simple VR training system for steady state electrode manipulation skill in manual arc welding, which adopted neither force display nor mixed reality, and verified its effectiveness. As a result, a good correlation is found between skills in VR welding and in actual welding from experimental tasks, and consequently the proposed system can train novice welders safely.
- [Show abstract] [Hide abstract] ABSTRACT: Although many metal work welding processes have been robotized recently, manual welding is indispensable in custom-made and high-mix low-volume productions. Hence, skilled welders are needed widely in the metal work industry. On the other hand, many people have little incentive to become a new welder because of the high physical risk and heavy demands of skills training. Virtual Reality (VR) technology may provide an effective solution, and various complex high-tech VR systems for training have been proposed so far. However, high tech VR training systems may not be required as long as the skill to be acquired is analyzed, and its tasks are confined. In this paper, a simple VR training system for steady state electrode manipulation skills in manual arc welding is proposed that uses neither force display nor mixed reality, and its effectiveness is verified. Good correlation is found between skills learned via VR welding and in actual welding in experimental tasks. Consequently, the proposed system can train novice welders safely.