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Yamamoto Lab
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A civil engineering lab that detects bridge damage from the vibrations of passing vehicles.
AboutAbout the lab
Civil engineering that saves the world
The Yamamoto Lab researches technology to inspect aging bridges quickly and at low cost.
Its research covers methods for detecting bridge damage from the vibrations of passing vehicles, and measuring bridge vibrations with MEMS sensors.
Students have opportunities to work on mathematically based analysis, numerical simulation using the finite element method (FEM), and field experiments.
The lab's motto is "Civil Engineering Saves the World."
Key terms
- Vehicle vibration analysis (VRA)
- A method that attaches sensors only to passing vehicles, not to the bridge, and examines bridge damage from the vehicles' vibrations
- Mode shape
- The deformed shape of a bridge as it vibrates. It is expected to be sensitive to local damage
- MEMS
- Short for micro-electromechanical systems. They are used as components of sensors
ResearchResearch themes
While bridges are aging, there are not enough skilled engineers who can inspect them. The lab's mission is to develop technology that makes inspection faster and cheaper, and to be useful to society by putting it into practical use.
*Illustrative imageFinding bridge damage from the vibrations of passing vehicles
The lab proposes a vehicle vibration analysis (VRA) method that examines the condition of a bridge from the vibrations of vehicles passing over it, without attaching sensors to the bridge. It focuses on the bridge's mode shapes, which are thought to be sensitive to local damage, and estimates them using multiple sensors attached to the vehicle.
*Illustrative imageMeasuring bridge vibrations with MEMS sensors
To reduce the cost of inspections that assess a bridge's condition by measuring its vibrations, the lab is examining whether MEMS sensors can be used. It also plans to publish the procedure for assembling a sensor from MEMS components.
MembersFaculty
The members of the Yamamoto Lab are faculty and students in the doctoral, master's, and undergraduate programs.As of 2024
- Assistant ProfessorKyosuke Yamamoto
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: “Panguil Bay Bridge 001” Department of Public Works and Highways (DPWH) / Public domain (cropped)
- Finding bridge damage from the vibrations of passing vehicles: “View east along Communipaw Avenue (northbound on U.S. Route 1 Truck and U.S. Route 9 Truck) crossing the Passaic River lift bridge from Newark to Kearny, New Jersey” Famartin / CC BY-SA 4.0 (cropped)
- Measuring bridge vibrations with MEMS sensors: “Bridge inspection Shangr-La, China” Pieceofmetalwork / CC BY 4.0 (cropped)
- Related lab (Architectural Structures Lab): “StructuralTesting 020” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (Building Structures Lab): “Reinforced concrete strut from the Weaver Building, 1897” Syclp / CC BY-SA 4.0 (cropped)
- Related lab (Shintaku Lab): “MetalFatigue 001” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (Artificial Intelligence Lab): “Shipboard Autonomous Firefighting Robot test aboard USS Shadwell (LSD-15) in November 2014” U.S. Navy photo by John F. Williams / Public domain (cropped)
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