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Solid Mechanics Lab
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The lab uses solid mechanics to investigate material deformation and embrittlement starting from the atomic scale.
AboutAbout the lab
Uncovering invisible mechanical phenomena and linking them to the design of materials and structures
The Solid Mechanics Lab studies the deformation mechanisms of materials and the evolution of defects across a wide range of time and length scales, from atoms to structural components, and links this research to the design of materials and structures.
In particular, the lab uses atomistic simulation to investigate the origins of embrittlement, in which materials lose their inherent strength or function under mechanical, chemical, or thermal environments, taking hydrogen embrittlement of steel as an example.
The research has expanded to lightweight, high-strength metallic materials and two-dimensional materials such as MXene, and it also uses data-driven methods such as machine learning.
On the lab's website, it is introduced under the name "Matsumoto Lab."
Key terms
- Embrittlement
- A phenomenon in which a material loses its inherent strength or function under mechanical, chemical, or thermal environments. Hydrogen embrittlement of steel is one example
- Atomistic simulation
- A method that reproduces a material on a computer as a collection of atoms to study the mechanisms of deformation and embrittlement
- MXene
- A two-dimensional material that the lab cites as an example of a next-generation functional material
NewsLab news
Prof. Matsumoto received the Materia Paper Award from the Japan Institute of Metals
A paper by Prof. Matsumoto and colleagues was published in Materials & Design
A paper by Prof. Matsumoto and colleagues was published in ISIJ International
A paper by Prof. Matsumoto and colleagues was published in the Journal of the Mechanics and Physics of Solids
A paper by Prof. Matsumoto and colleagues was published in Science and Technology of Advanced Materials
ResearchResearch themes
Materials are made of atoms, but between the atomic scale and the size of a structural component lie diverse hierarchical levels such as microstructures, defects, and interfaces. The lab investigates deformation mechanisms and defect evolution across wide time and length scales, and explores the origins of embrittlement through atomistic simulation and mechanics.
*Illustrative imageUnderstanding deformation and defects across hierarchical levels
To create new mechanical properties and functions in materials with diverse hierarchical levels, such as microstructures, defects, and interfaces, the lab investigates deformation mechanisms and defect evolution in a hierarchical and integrated way across wide time and length scales.
*Illustrative imageThe causes of environment-induced embrittlement
The lab investigates the origins of phenomena in which materials lose strength or function because of their environment, such as hydrogen embrittlement of steel, using atomistic simulation and mechanics. It also aims to find what different embrittlement phenomena have in common and to treat them within a unified framework.
*Illustrative imageDesigning lightweight metals and functional materials
Using data-driven methods such as machine learning, the lab extends its research to understanding the properties of lightweight, high-strength metallic materials such as Mg alloys and of two-dimensional materials such as MXene, and to developing design guidelines.
MembersFaculty
The members of the Solid Mechanics Lab are faculty and master's students.As of 2026
- ProfessorRyosuke Matsumoto
- Assistant ProfessorLijun Liu
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “The brittle fracture surface of low-carbon steel” DanilovVA / CC BY-SA 4.0 (cropped)
- Understanding deformation and defects across hierarchical levels: “Transmission electron microscope (2)” Gannu03 / CC BY-SA 4.0 (cropped)
- The causes of environment-induced embrittlement: “The ductile fracture surface of low-carbon steel” DanilovVA / CC BY-SA 4.0 (cropped)
- Designing lightweight metals and functional materials: “Inside of a Lenovo ThinkPad X220 magnesium alloy bottom case” Siarhei Besarab / CC BY-SA 4.0 (cropped)
- Related lab (Process Metallurgy Lab): “US Army soldier welding two metal pieces, Fort Gregg-Adams, Virginia, March 2025” Juan F. Jimenez, Army / Public domain (cropped)
- Related lab (Process Mechanics Lab): “Ultrasonic Welding” NearEMPTiness / CC BY-SA 3.0 (cropped)
- Related lab (Joining Microstructure Design Lab [Joining and Welding Research Institute]): “Stainless pipe weld joints” Flattrackers and Caferacers Parts and bikebuilds / CC BY-SA 2.0 (cropped)
- Related lab (Materials Ultrafine Process Engineering Lab): “Transmission electron microscopy (TEM)” Database Center for Life Science (DBCLS) / CC BY 3.0 (cropped)
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