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Sato-Sekiguchi Lab
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A lab that uses mechanics of materials to study the strength and failure behavior of adhesively bonded joints.
AboutAbout the lab
Tackling adhesion problems with mechanics of materials.
The Sato-Sekiguchi Lab studies problems of parts joined with adhesives (adhesive joints), based on mechanics of materials.
Focusing on adhesion phenomena and the mechanics of adhesive joints, the lab aims to solve a wide range of manufacturing problems.
Its work has included measuring the fracture resistance of adhesives, the effects of water entering bonded areas, and sealing technology for fuel cells.
The lab is divided into Prof. Sato's group and Associate Professor Sekiguchi's group.
Key terms
- Adhesive joint
- A part where components are joined with adhesive. Because the whole surface is bonded, forces are easily distributed.
- Fracture toughness
- A measure of a material's resistance to fracture that starts from a crack. It serves as an indicator of how hard the material is to break.
- Stress concentration
- A phenomenon in which forces inside a material gather and become locally large, for example where the shape changes abruptly.
NewsLab news
A student received the Best Presentation Award at the Young Researchers' Exchange Symposium of the Adhesion Society of Japan
Associate Professor Sekiguchi received the Academic Award of the Adhesion Society of Japan
A paper written by a student was accepted by the journal Adhesives
A paper was accepted by the International Journal of Adhesion and Adhesives
A paper written by a doctoral student was accepted by the Journal of Adhesion
ResearchResearch themes
Based on mechanics of materials, the lab aims to solve manufacturing problems, focusing on issues related to adhesive joints. Its work has covered adhesion-related themes ranging from measuring how adhesives fracture to the effects of water, fuel cell sealing, and debondable adhesives.
*Illustrative imageMeasuring the fracture resistance of adhesives
The properties of adhesives change with the speed at which they are pulled, so the lab investigates how fracture toughness (resistance to fracture) varies with loading rate. It has also built a drop-weight high-speed testing machine and a creep testing machine, and runs experiments over a wide range of speeds.
*Illustrative imageWater penetrating bonded areas
Adhesives are resins, so water inevitably penetrates bonded areas. The lab studies a technique that uses near-infrared spectroscopy to visualize moisture in the adhesive layer, as well as the effects of water on strength and crack growth.
*Illustrative imageSealing technology for fuel cells
The lab takes part in a national NEDO project toward a hydrogen society. It researches and develops higher-performance adhesive sealing materials for polymer electrolyte fuel cells, along with design technology for the sealed parts.
*Illustrative imageApplying different adhesives in different places
At the edges of a bonded area, forces concentrate (stress concentration), which reduces strength. The lab develops equipment for "graded application," in which a soft adhesive is applied at the edges and a strong adhesive in the center, and evaluates the resulting strength.
MembersFaculty
The Sato-Sekiguchi Lab consists of faculty members, doctoral students (including working professionals), master's students, undergraduate students, researchers, technical support staff, and a secretary.As of 2026
- ProfessorChiaki SatoPublications ↗
- Associate ProfessorYu SekiguchiPublications ↗
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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: “Gecko foot on glass” Bjørn Christian Tørrissen / CC BY-SA 3.0 (cropped)
- Measuring the fracture resistance of adhesives: “Aluminium bonding, Bremen (april2 020)” Matti Blume / CC BY-SA 4.0 (cropped)
- Water penetrating bonded areas: “Water drops on metal” Photos public domain.com / Public domain (cropped)
- Sealing technology for fuel cells: “Fuel cell NASA p48600ac” 作者不詳 / Public domain (cropped)
- Applying different adhesives in different places: “Gluing the holes” Jake Gallagher / CC BY-SA 3.0 (cropped)
- Related lab (近藤研究室): “Zinnguss Flachfiguren Schmelze wird in Schieferform gegossen” Wilhelm-schweizer / CC BY-SA 4.0 (cropped)
- Related lab (西迫研究室): “T Junction Microfluidic Device” Wongbria / CC BY-SA 4.0 (cropped)
- Related lab (古川研究室
（再生医工学研究室） ): “Line of culture flask ( )” Jean-Etienne Minh-Duy Poirrier from USA / CC BY-SA 2.0 (cropped) - Related lab (小林・松浦研究室
（ジェイテクト革新的基盤技術共同研究講座） ): “Abandoned concrete factory mechanism” Diacritica / CC BY 3.0 (cropped)
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