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Materials Strength Lab (Yamazaki Lab)
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A materials strength lab that captures, predicts, and controls fracture in materials.

AboutAbout the lab
Understanding, predicting, and controlling fracture
The Materials Strength Lab studies how structural materials fracture, with the aim of improving their strength, durability, and reliability.
The lab clarifies how heat-resistant materials used in jet engines and power-generation gas turbines are damaged at high temperatures.
Its research also covers the strength of interfaces bonded by coatings or adhesives, and the fatigue of polymers.
Centered on experiments and combined with numerical analysis, the lab aims to elucidate new mechanisms and build a new mechanics.
Key terms
- Thermomechanical fatigue (TMF)
- A phenomenon in which damage accumulates in a material as temperature changes and mechanical load are applied repeatedly
- Interface
- The boundary where dissimilar materials are in contact. It tends to be the starting point of delamination
- Thermal barrier coating
- A heat-insulating film applied to the surface of a component to protect it from high-temperature gas
NewsLab news
A doctoral student received the Paper Encouragement Award from the Society of Materials Science, Japan
A doctoral student received the Young Member Activity Award from the Kanto Branch of the Society of Materials Science, Japan
Students received the Branch Chair Award and the Outstanding Presentation Award at the Student Research Exchange Meeting of the Kanto Branch of the Society of Materials Science, Japan
Associate Professor Yamazaki received the Division Award (Achievement Award) from the Materials and Processing Division of the Japan Society of Mechanical Engineers
ResearchResearch themes
Structural materials must have a good balance of high strength, reliability, and long life. The lab aims to understand fracture mechanisms, predict failure, and control fracture, conducting research centered on experiments and combined with numerical analysis.
*Illustrative imageHigh-Temperature Strength
The lab investigates how single-crystal superalloys, TiAl alloys, additively manufactured alloys, heat-resistant steels, and thermal barrier coatings are damaged at high temperatures. It clarifies how small cracks that grow under thermomechanical fatigue (TMF), and microstructural changes controlled by oxygen diffusion, affect cracking.
*Illustrative imageInterface Strength
The lab quantitatively evaluates the strength of interfaces formed by coating, bonding, and joining, based on fracture mechanics. It investigates how conditions such as film deposition conditions, thermal cycling, and immersion in water change interface strength.
*Illustrative imagePolymer Strength
Targeting engineering plastics and adhesives, the lab aims to measure strength in a way that allows direct comparison between materials. It investigated the low-cycle fatigue characteristics specific to epoxy resin, a viscoelastic material, and proposed a method for predicting fatigue life.
*Illustrative imageStandards and Standardization of Material Testing
By creating new evaluation methods, the lab aims to improve the reliability of structural components. It is developing a new interface strength evaluation method for measuring coating adhesion, and working on the standardization of thermomechanical fatigue test methods and low-cycle fatigue test methods.
MembersFaculty
The members of the Materials Strength Lab consist of faculty and doctoral, master's, and undergraduate students.As of 2026
- ProfessorYasuhiro Yamazaki
VoicesStudent voices
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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: “FlameSpraying” Anmart / CC BY-SA 3.0 (cropped)
- High-Temperature Strength: “IGT Blades” Nabonaco / Public domain (cropped)
- Interface Strength: “CMF 56 exhaust system with plasma-sprayed thermal barrier” Ltosnar / CC BY 4.0 (cropped)
- Polymer Strength: “Cast iron tensile test” Sigmund / CC BY-SA 3.0 (cropped)
- Standards and Standardization of Material Testing: “Compression test-Universal testing machine” Cjp24 / CC BY-SA 3.0 (cropped)
- Related lab (Matsubayashi Lab): “Ceramographic sections” His Manliness (talk) 04:59, 2 December 2008 (UTC) / Public domain (cropped)
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- Related lab (Miyamoto Lab): “Laser LY-RGBW01 internals optical table shining in smoke PC301982” Alexey Vazhnov / CC BY-SA 4.0 (cropped)
- Related lab (Architectural Ergonomics Lab (Yoshioka Lab)): “VR Box (Virtual Reality Glasses), Krimpen aan den IJssel (2020)” Donald Trung Quoc Don (Chữ Hán: 徵國單) - Wikimedia Commons - © CC BY-SA 4.0 International.(Want to use this image?
)Original publication 📤: --Donald Trung 『徵國單』 (No Fake News 💬) (WikiProject Numismatics 💴) (Articles 📚) 13:34, 5 November 2021 (UTC) / CC BY-SA 4.0 (cropped)
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