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Micromechanics Lab
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A lab that examines fatigue cracks in metallic materials from a microscopic perspective.
AboutAbout the lab
Understanding metal fatigue fracture from microscopic structure
The Micromechanics Lab studies the behavior of fatigue cracks in metallic materials at the micro and nano scales to clarify the mechanisms by which fatigue fracture occurs.
The lab focuses on how the microstructure of a material affects fatigue cracks.
Recently, it has been working on very high cycle fatigue of high-strength Mg-Zn-Y alloys and on clarifying the fracture mechanisms of LPSO-phase-strengthened Mg alloys through analysis of ultrafine microstructures.
Key terms
- Fatigue crack
- A small crack that forms inside or on the surface of a metal due to repeatedly applied loads.
- Very high cycle fatigue
- Fatigue of a metal that occurs after it has been subjected to an extremely large number of load cycles.
- LPSO phase
- A phase with a long-period stacking ordered structure that appears in Mg alloys.
ResearchResearch themes
The lab investigates the fatigue crack behavior of metallic materials from the viewpoint of the influence of the material's microstructure. It captures crack behavior at the micro and nano scales and works to clarify the mechanisms of fatigue fracture.
*Illustrative imageFatigue properties of ultra-high-strength Mg alloys
As basic research, the lab investigates the fatigue properties of ultra-high-strength Mg-Gd-Y-Zn-Zr alloys. Its research keywords are Mg alloys, fatigue, and cracks.
*Illustrative imageVery high cycle fatigue of nanostructured alloys
For alloys with hierarchical anisotropic nanostructures, the lab aims to clarify the mechanisms behind very high cycle fatigue strength, using precise structural analysis. Its keywords are fatigue, high cycle, and magnesium alloys.
*Illustrative imageDomain structure of bismuth titanate
The lab studies the internal domain structure and polarization dynamics of bismuth titanate, a high-temperature piezoelectric ceramic. Fatigue is also among its research keywords.
*Illustrative imageCrack initiation and propagation in titanium alloys
The lab studies the initiation and propagation of fatigue cracks in titanium alloys with a metastable structure. Its research keywords are very high cycle and fatigue.
MembersFaculty
- ProfessorQiang Chen
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: “L-R, front to back - Inconel nickel-copper; Beryllium-copper (no-spark tools); steel; magnesium; aluminum; titanium” Bill Abbott / CC BY-SA 2.0 (cropped)
- Fatigue properties of ultra-high-strength Mg alloys: “Inside of a Lenovo ThinkPad X220 magnesium alloy bottom case” Siarhei Besarab / CC BY-SA 4.0 (cropped)
- Very high cycle fatigue of nanostructured alloys: “Brass” Splarka / Public domain (cropped)
- Domain structure of bismuth titanate: “Ideenwelt EM2862 - Piezoelectric buzzer-91799” Raimond Spekking / CC BY-SA 4.0 (cropped)
- Crack initiation and propagation in titanium alloys: “Alloy and metal samples - Beryllium-Copper, Inconel, Steel, Titanium, Aluminum, Magnesium” Bill Abbott / CC BY-SA 2.0 (cropped)
- Related lab (熱エネルギー有効利用科学): “Chiller” P199 / Public domain (cropped)
- Related lab (固体力学研究室): “Tensile testing on a coir composite” Kerina yin / CC0 (cropped)
- Related lab (構造材料評価研究室): “TiAl duplex” Lne / CC0 (cropped)
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制御研究室): “Naruto whirlpools” Suicasmo / CC BY-SA 4.0 (cropped)
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