LAB LOGA page on LabLog, a review site (not the lab's official page)
Tateishi-Hanji Lab
Machine-translated · View original
The lab develops technologies for evaluating fatigue cracks in steel bridges so that these bridges can remain in service longer.
AboutAbout the lab
Technology that preserves valuable structures for the future.
The Tateishi-Hanji Lab studies the deterioration of steel structures such as bridges.
Even a properly designed bridge deteriorates as it continues to be used.
Focusing on fatigue cracks caused by repeated loads from traffic, earthquakes, and other sources, the lab studies how to evaluate fatigue strength, how to increase it, and how to repair cracks.
Key terms
- Fatigue crack
- A crack that gradually grows in a material when a force too small to break it at once is applied over and over
- Welded joint
- The part where steel members are connected by welding. Fatigue cracks tend to form here
- Ultra-low-cycle fatigue
- Fatigue that occurs when large deformations are repeated only a few to a few dozen times, as in an earthquake
- Fracture mechanics
- The field that deals with the conditions under which a material with a crack lets the crack grow and breaks
NewsLab news
A student received the Most Impressive Poster Award at the Next-Generation Structural Engineers' Work in Progress 2026
A student received the Academic Session Presentation Award at the JSSC Steel Structures Symposium 2025
A paper from the lab received the Japanese Society of Steel Construction Paper Award for fiscal 2025
A student received the Outstanding Presenter Award at the 80th Annual Meeting of the Japan Society of Civil Engineers
A paper from the lab received the Tanaka Prize (Paper category) from the Japan Society of Civil Engineers
ResearchResearch themes
The lab studies fatigue cracks that form in welded parts of steel bridges and similar structures, through both experiments and analysis. It works on methods to evaluate and improve fatigue strength, as well as low-cost, fast, and simple repair and reinforcement methods.
*Illustrative imageHigh-Cycle Fatigue of Steel Structures
The lab studies high-cycle fatigue, in which cracks form in the welded parts of steel bridges when forces from vehicles, wind, and other sources are applied repeatedly, hundreds of thousands of times or more. Its work includes methods for identifying how cracks propagate in welded joints, evaluating the life of cracks that start from the weld root, and simulating the scatter in fatigue strength.
*Illustrative imageUltra-Low-Cycle Fatigue and Earthquake Preparedness
After the Great Hanshin-Awaji Earthquake, damage from ultra-low-cycle fatigue was reported in welded joints of steel structures. The lab uses image-based measurement and fracture mechanics to clarify how cracks initiate and grow, and also investigates how finishing the weld toe smoothly can increase fatigue strength.
*Illustrative imageRepair and Reinforcement Technologies for Steel Structures
About half of Japan's steel bridges have been in use for more than 40 years. For these bridges, the lab studies low-cost, fast, and simple repair and reinforcement methods. Its work includes injecting resin into cracks to slow their growth, repair by adhesive bonding, and reinforcement of corroded members.
MembersFaculty
The members of the Tateishi-Hanji Lab consist of faculty, secretaries, and students in the doctoral program, the master's program, and the undergraduate program.As of 2026
- ProfessorKazuo Tateishi
- Associate ProfessorTakeshi Hanji
VoicesStudent voices
Ratings and reviews reflect the experiences of individual current or former students, not the lab's official views. Whether a lab has reviews, or how many, says nothing about the lab itself.
Students who take part in an interview may receive a thank-you gift worth ¥1,000, regardless of what they say.
Student ratings (0 students)
--
--
--
--
--
--
Student voices answer questions like these
- What's great about this lab?
- What did you learn after joining?
- What's the vibe, and what is the professor like?
- Who is this lab for?
- Where do graduates go?
Your experience can help younger students choose their lab. Your name won't be shown.
Write a lab reviewAnonymous · Your draft is saved if you stopRelatedLabs similar to Tateishi-Hanji Lab
Structural Engineering, Materials Engineering, and Disaster Prevention (Fuminobu Ozaki) LabSchool of Engineering, Department of Environmental Engineering and ArchitectureStructural fire resistance and fire engineering, with specia…
Nakamura (Hideki) LabSchool of Engineering, Department of Environmental Engineering and ArchitectureResearch on planning and design of road space and road struc…
Kimura LabSchool of Engineering, Department of Environmental Engineering and ArchitectureSpecializing in building structures and structural design; r…
Noda-Nakai Lab (Geotechnical Disaster Prevention Engineering Group)School of Engineering, Department of Environmental Engineering and ArchitectureBased on soil mechanics and geotechnical engineering, we con…The information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
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: “Whittier Bridge Steel Girder Erection on Newburyport Approach ( )” MassDOT / Public domain (cropped)
- High-Cycle Fatigue of Steel Structures: “MetalFatigue 001” National Institute of Standards and Technology / Public domain (cropped)
- Ultra-Low-Cycle Fatigue and Earthquake Preparedness: “Earthquake damage - bridge over Styx River” Martin Luff / CC BY-SA 2.0 (cropped)
- Repair and Reinforcement Technologies for Steel Structures: “Steel Bridge Inspection - Inspecting under the upper deck” Oregon Department of Transportation / CC BY 4.0 (cropped)
- Related lab (Structural Engineering, Materials Engineering, and Disaster Prevention (Fuminobu Ozaki) Lab): “Tu braunschweig panel furnace preparation” Achim Hering / CC BY 3.0 (cropped)
- Related lab (Nakamura (Hideki) Lab): “Traffic light at Jeffrey Road and Smoketree” aismallard / CC BY-SA 3.0 (cropped)
- Related lab (Kimura Lab): “"Shells" - The Sydney Opera House's iconic roof (visitors digitally removed) ( )” Jorge Láscar from Melbourne, Australia / CC BY 2.0 (cropped)
- Related lab (Noda-Nakai Lab (Geotechnical Disaster Prevention Engineering Group)): “Soil-liquefaction at Shinkiba after 2011 Tohoku Pacific Ocean offshore earthquake” Morio / CC BY-SA 3.0 (cropped)
About LabLog
LabLog is a lab review app for students only. Student members at each university interview students in labs and publish what they say. Student voices can only be read by students who sign up with a university email address. Operated by bestiee Inc.
Learn more about LabLog ↗Search engines and AI may reference the basic lab info and rating summaries on this page and the description of LabLog. Student voices are for student members only. Automated collection by programs (scraping, or input to or training of AI) is prohibited under Article 8 of the Terms of Service. If you need data for research or analysis, please contact us.