Vol.21 No. 5
〈The Research Center for Structural Materials〉
Pushing the limits
Structural materials—which form the backbones of buildings, infrastructure and equipment—are increasingly important in ensuring that structures survive earthquakes and other disasters and in global efforts to achieve carbon neutrality.
These issues require structural materials to be fully functional in extremely severe environments.
For example, improving the fuel efficiency of aircraft and thermal power plants will require lighter weight materials with greater heat resistance.
Next-generation energy infrastructure will have to deal with embrittlement caused by low temperatures and hydrogen exposure.
Moreover, these new technologies will need to be sufficiently durable to help society become more sustainable over the long term.
The NIMS Research Center for Structural Materials carries out basic research with the goals of contributing to the industrial sector, meeting social demands and protecting people’s lives.
Its activities include developing structural materials capable of effectively functioning in extreme environments and advanced evaluation and analytical techniques.

Key project
The Research Center for Structural Materials has been carrying out research and development in two project categories
Research Highlights
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2024.01.12
Making Strong, Lightweight, Environmentally Friendly CFRPs
Fiber reinforced plastics (FRPs) are strong, lightweight, heat-resistant materials. Expectations are growing for FRPs to be incorporated into aircraft to reduce weight. Kimiyoshi Naito is an expert in polymer matrix composites, including carbon fiber reinforced plastics (CFRPs) composed of resins and carbon fiber. He has been engaged in a challenging effort to develop recyclable CFRPs. […]
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2024.01.12
Metal Additive Manufacturing: Capable of Fabricating Reliable Structural Components
Metal additive manufacturing is an emerging material fabrication technology. Products fabricated using this technique have microstructures and physical properties different from those made using conventional methods. Understanding these differences is crucial to optimizing process conditions, which vary depending on a manufactured product’s intended purpose. Masahiro Kusano has been working to identify optimum process conditions using […]
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2024.01.12
Ceramic Matrix Composites: A Revolutionary Aircraft Material
Ceramic matrix composites (CMCs) are heat-resistant, lightweight materials. They have been used in some aircraft engine components. Hideki Kakisawa has been working to improve CMCs’ heat resistance while exploring new applications for them by developing techniques to evaluate their performance and that of their coating materials. We asked him about his R&D activities. Increasing commercial […]
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2024.01.12
Solidification Cracking—a Cause of Severe Weld Failure—Caught in the Act!
Welding is an indispensable technique used to construct a variety of structures. Solidification cracking—the formation of shrinkage cracks during the solidification of molten weld metal—shortens the lives of welded structures. Tomoya Nagira has been investigating solidification cracking mechanisms using a synchrotron x-ray imaging technique at the SPring-8 facility. Observing weld formation processes obscured by the welding […]
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2024.01.12
Large-Area, High-Resolution, Three-Dimensional Imaging of Materials Using Multifunctional Microscopes
Structural materials degrade over time as they undergo various damaging processes, such as deformation, cracking and corrosion. Toru Hara uses his expertise in electron microscope-based analysis to study the mechanisms behind these processes through various structural materials research projects. Sophisticated electron microscopy The physical properties of structural materials are greatly influenced by their microstructures, which […]
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2024.01.12
Accurate Simulation of Heat-Resistant Material Microstructures Based Solely on Fundamental Physical Laws
Materials used in aircraft engines and other systems that operate at high temperatures need to be heat resistant and durable. Experimentally evaluating the physical properties of these materials is time-consuming and costly. Ryoji Sahara has been developing accurate computer simulation techniques that can be used to expedite property evaluations and materials development. Calculation errors: a primary […]








