Region of Research

This division is oriented (1) to providing scientific bases for generation-conversion-transportation and interaction with materials for Well-contro lled multifunctional energies indispensable to processing and constructing advanced materials, and (2) to development of high-quality energy sources suitable for various material processing.

In particular, our institute has made great contributions to the development of various advanced materials processing systems with concentrated and dispersed energy sources, which are expected to have wide application fields in the future. Major emphasis is placed on the developments of advanced monitoring and estimating techniques for material processing and the systematization of the functional materials prosessing technology through interpretation of phenomena relating to the high energy involved in the processing.

Welded or joined structures are widely used in a variety of industries, which support sustainable growth of our society. Expanding applications increase the demands for higher performance and reliability upon the welded and joined materials including dissimilar joints.
 In order to meet these demands, we investigate the mechanism involving the interface formation and joining on multi-scales from atomic and nanometer to meter in metallurgical and process-engineering points of view, through scientific understanding of the mechanical, physical and chemical properties of the various types of welded or joined materials such as bulk structures and multilayer thin films.
 Based on these investigations, a new scientific research field is created, and the design and development of the optimal materials, structures, and processes for welding and joining are performed in order to obtain a joint and composite having a high reliability and performance under interface control.

The promotion of the science and technology for manufacturing high-quality products and building durable structures leads to the innovative and sustainable growth of industries. The joining/welding design emphasizes the increasing need for a methodology to predict the structural performance and integrity from a stage of designing structures with the best use of materials. The Research Division of Materials Joining Assessment consists of four Departments; Joining Mechanics and Analyses, Structural Integrity and Failure Assessment, Joining Design and Dependability, and Reliability Evaluation and Simulation, aiming at the creation of an interactive design system eligible for structural performance assessments in service conditions. Each Department deals with the simulation of joining & welding construction with computational technologies, the transferability analysis of fracture mechanics test results by the Local Approach, the lifetime assessment of structures and its sensitivity analysis, and the reliability evaluation of welded joints in terms of materials science, respectively.

The Smart Processing Research Center (SPRC) was established as a research center in the Joining and Welding Research Institute (JWRI) on April 1, 2003 by consolidating two research centers (i.e., the Research Center for Ultra High Energy Density Heat Source, and the Research Center for Materials Recycling and Integration). Major objective of SPRC is to develop advanced joining and materials processes with excellent control of nano- and micro-structures, thereby contributing to the establishment of next-generation manufacturing science and technologies that can enhance development of industries as well as minimization of negative impacts on the environment.
 In order to contribute to development of innovative joining technologies for strengthening global competitiveness and economic activation and leading the world, it is required to create new scientific fields in the interdisciplinary research activities including advanced materials science with excellent control of nano- and micro-structures, 3-dimensional processing, and materials-surface and interface science.
 Through close cooperation with three research divisions of JWRI for development of science and technology in joining and welding, the SPRC will promote cutting-edge research activities leading to technological innovation in the 21st century.



Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development

Project to Create Research and Educational Hubs for Innovative Manufacturing in Asia

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