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Materials Evaluation Engineering Lab
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A lab that studies nondestructive testing, using ultrasound to examine materials and structures without damaging them.
AboutAbout the lab
Using ultrasound to look inside materials without breaking them.
The Materials Evaluation Engineering Lab studies nondestructive testing and materials evaluation, using ultrasound to examine materials and structures without damaging them.
This research is used for materials evaluation at the raw-material stage, inspection after processing and welding, and final inspection before shipment.
Nondestructive testing is performed regularly on aircraft and in power plants and manufacturing plants, and the technology is also used to maintain aging buildings and bridges.
The lab's website also introduces it as "Materials Evaluation Engineering (Hayashi-Mori Lab)."
Key terms
- Nondestructive testing
- Inspection that examines internal defects and the condition of a material or structure without damaging it.
- Laser ultrasonics
- A method in which one laser generates ultrasound in a solid and another laser detects the vibration that appears on the surface.
- Ultrasonic phased array
- A technology that processes the waveforms of ultrasound transmitted and received by many elements to create images of defects, interfaces, and other features inside a material.
NewsLab news
A doctoral student was selected for 1st Place in the student oral presentation competition at ICAM2026
A paper was published in Journal of Manufacturing Processes
A paper was published in Nondestructive Testing and Evaluation
A paper was published in Wave Motion
A paper was published in Ultrasonics
ResearchResearch themes
The Materials Evaluation Engineering Lab is advancing research on ultrasonic nondestructive testing and materials evaluation. Its work includes non-contact ultrasonic measurement, inspection with guided waves, strength evaluation of adhesive bonds, and inspection of additively manufactured (3D-printed) parts.
*Illustrative imageRemote laser measurement of deposits inside pipes
The lab studies measurement methods for applying laser ultrasonics to pipe inspection in large structures. With the decommissioning of nuclear power plants in mind, it aims to measure deposits inside pipes from a distance.
*Illustrative imageUltrasonic visualization under poor visibility and high radiation
For the decommissioning of the Fukushima Daiichi Nuclear Power Plant, the lab is investigating a method that uses ultrasonic phased array technology to visualize areas where visibility is poor because of dust and other particles. The sensor contains no semiconductor chips and is resistant to radiation. The work is carried out jointly with Tohoku University, Nihon University, and others.
*Illustrative imageDefect inspection of metal 3D-printed parts
A known challenge with parts made by metal 3D printers is that minute defects tend to form near the surface. Using ultrasound generated by a laser, the lab has completed a fundamental technology that images these defects without contact and makes it possible to inspect a part while it is being built.
*Illustrative imageBuffers for phased arrays on high-temperature targets
When ultrasonic inspection is performed on hot pipes and similar targets, a buffer material that moderates the heat is placed in between, but with the buffer alone, internal images cannot be obtained. By attaching a thin plate-shaped waveguide to each element, the lab made it possible to obtain images with the buffer left in place.
MembersFaculty
The members of the Materials Evaluation Engineering Lab consist of faculty, part-time staff, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorTakahiro Hayashi
- Associate ProfessorNaoki Mori
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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: “GE USM 35X DAC LEMO type NDT tool” Plenumchamber / Public domain (cropped)
- Remote laser measurement of deposits inside pipes: “HWCTR Decommissioning ( )” ENERGY.GOV / Public domain (cropped)
- Ultrasonic visualization under poor visibility and high radiation: “Fukushima Decommissioning ( )” IAEA Imagebank / CC BY 2.0 (cropped)
- Defect inspection of metal 3D-printed parts: “Nondestructive testing Prommashkomplekt” Balashka at Russian Wikipedia / CC0 (cropped)
- Buffers for phased arrays on high-temperature targets: “Ultrasonic pipeline test” w:en:User:Davidmack / Public domain (cropped)
- Related lab (Measurement and Inspection Engineering Lab): “GMAW.welding.af.ncs” William M. Plate Jr. / Public domain (cropped)
- Related lab (System Design Lab): “Electromagnetic Levitation” HeavyMetalChicken / CC0 (cropped)
- Related lab (Microjoining Engineering Lab [Joining and Welding Research Institute]): “Soldering a 0805” Aisart / CC BY-SA 3.0 (cropped)
- Related lab (Combustion Engineering Lab): “Austin gas turbine, combustor” Andy Dingley / CC BY-SA 3.0 (cropped)
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