Mechanics
Mechanics of materials, strength, fracture, fatigue, adhesive bonding, joining, and reliability.
International Academic Workshop · Tokyo & Online
International Workshop on Next-Generation Composite Materials and Structures 2026
Mechanics · Manufacturing · Monitoring · Modeling
Celebrating the Career and Contributions of Professor Akira Todoroki
About the workshop
Advancing composite science through connection.
Professor Akira Todoroki has made extensive contributions to research and education in composite mechanics, strength and fracture, structural integrity, optimal design, structural health monitoring, and additive manufacturing of composite materials.
This workshop brings together laboratory alumni, domestic and international collaborators, industrial researchers, and students to discuss current research and future directions in next-generation composite materials and structures.
Research scope
Four perspectives. One shared frontier.
Manufacturing
Composite processing, 3D printing, additive manufacturing, and material functionalization.
Monitoring
Nondestructive evaluation, structural health monitoring, acoustic emission, ultrasonics, vibration, and sensing.
Modeling
Numerical analysis, optimal design, statistical diagnostics, artificial intelligence, and risk assessment.
Special Lecture
Special Lecture by Professor Akira Todoroki
Green Tea makes thermoplastic composites stronger: new technology and history
Abstract
In 3D-printed continuous carbon fiber reinforced PLA, the carbon fiber sizing agent is formulated for epoxy resins, resulting in poor interfacial adhesion to the thermoplastic PLA matrix that limits the interlaminar and flexural performance. Exploiting the ability of green tea catechin to improve the wettability of carbon materials, we propose a simple treatment in which carbon fibers are ultrasonically cleaned in a commercial green tea beverage. Specimens were fabricated from the treated fiber using a double-nozzle 3D printer and tested mechanically. The treatment raised the interlaminar shear strength to about 1.4 times that of the untreated material and increased the flexural strength by up to about 13%, whereas the fiber-dominated tensile properties were unchanged. Scanning electron microscopy confirmed the improved adhesion between the carbon fiber and PLA, and FTIR analysis indicated a change in the ester carbonyl band that suggests transesterification between the gallate-type catechins and PLA at the interface. The green tea catechin treatment is thus a simple and effective interfacial treatment for enhancing the mechanical properties of environmentally friendly PLA composites.
Program
A day of research exchange
Thursday, November 26, 2026
Hybrid · Institute of Science Tokyo, Ookayama Campus
Workshop 09:20–17:25
All times are Japan Standard Time (JST). The program is subject to change.
Registration / Opening
- 09:00–
Registration Opens
- 09:20–09:40
Opening Remarks
General Session 1 09:40–11:00
- 09:40–10:00
Talk 1Evaluation of tensile strength of multi-walled carbon nanotube by ultrasonication
Presenter: Yoshinobu SHIMAMURA
Presenter affiliation: Shizuoka UniversityPresentation: In person
- 10:00–10:20
Talk 2Analysis of two-dimensional fiber-steered ABH plate for vibration damping
Presenter: Koichi MIZUKAMI
Presenter affiliation: Tokyo Metropolitan UniversityPresentation: Online
- 10:20–10:40
Talk 3A Bayesian Framework for Quantifying Failure Probability from Real-Time Monitoring Data
Presenter: Atsushi IWASAKI
Presenter affiliation: Gunma UniversityPresentation: Online
- 10:40–11:00
Talk 4Toward SHM-Based Design and Integrity Assurance of Composite Pressure Vessels
Presenter: Yoshihiro MIZUTANI
Presenter affiliation: Institute of Science TokyoPresentation: In person
Break
- 11:00–11:10
Coffee Break
General Session 2 11:10–12:10
- 11:10–11:30
Talk 5Tailoring the Bending Behavior of Micrographite via a Nanometer-Thick Surface-Modified Layer
Presenter: Wataru MATSUNAGA
Presenter affiliation: Kyoto UniversityPresentation: In person
- 11:30–11:50
Talk 6Effect of Transverse Plies on the Fatigue Life of CFRP Cross-Ply Laminates
Presenter: Kosuke TAKAHASHI
Presenter affiliation: Hokkaido UniversityPresentation: Online
- 11:50–12:10
Talk 7Acoustic Response Estimation Using Geometrical Acoustics and Deep Learning
Presenter: Takeshi ASHIZAWA
Presenter affiliation: Institute of Science TokyoPresentation: In person
Lunch
- 12:10–13:00
Lunch Break
Student Session 13:00–15:20
- 13:00–15:20
Student Session
A Student Session in collaboration with the Research Group on 3D Printing of Composite Materials of the Japan Society for Composite Materials (JSCM) is planned as a parallel session.
Details to be announced
Break
- 15:20–15:35
Coffee Break
Special Lecture 15:35–16:35
- 15:35–16:35
Green Tea makes thermoplastic composites stronger: new technology and history
Institute of Science Tokyo
Duration: 60 minutes
General Session 3 16:35–17:15
- 16:35–16:55
Talk 8High-Throughput In-Situ Flexural Testing and Data-Driven Optimization of Continuous Carbon Fiber 3D Printing
Presenter: Ryosuke MATSUZAKI
Presenter affiliation: Tokyo University of SciencePresentation: In person
- 16:55–17:15
Talk 9High-performance 3D printing of carbon fiber composites
Presenter: Masahito UEDA
Presenter affiliation: Nihon UniversityPresentation: In person
Closing / Banquet
- 17:15–17:25
Closing Remarks
- 17:40–
Workshop Banquet
Student Session
Student Session
A Student Session organized by the Research Group on 3D Printing of Composite Materials of the Japan Society for Composite Materials (JSCM) is planned to be held as a parallel session during NGCMS 2026.
Information on the call for student presentations and participation arrangements will be provided on the research group’s website.
Organizing Committee
Workshop organization
Yoshihiro MizutaniInstitute of Science Tokyo
Yoshinobu ShimamuraShizuoka University
Atsushi IwasakiGunma University
Masahito UedaNihon University
Ryosuke MatsuzakiTokyo University of Science
Kosuke TakahashiHokkaido University
Koichi MizukamiTokyo Metropolitan University
Wataru MatsunagaKyoto University
Takeshi AshizawaInstitute of Science Tokyo
Venue & Access
Tokyo + online
Hybrid Workshop
Institute of Science Tokyo
Ookayama Campus, Ishikawadai Area
Building, room, and access details will be announced.
Online platform and connection details will be provided only to confirmed participants. No public meeting link will be posted.
Participation
Join the conversation.
To participate in NGCMS 2026, please complete the registration form below.
Participation Fee
On-site participation: JPY 10,000
Online participation: Free
Note for online participants:
Q&A sessions will be open to both on-site and online participants. However, if participation is high or time is limited, questions from on-site participants may be given priority.
After the workshop
Banquet from 17:40
A banquet will be held from 17:40 following the workshop. Details regarding the venue, participation fee, and registration will be announced later.
Organizer & Co-organizer
Organizer
AMAC
Study Group on Advanced Mechanical-Vibration Analysis for Condition Monitoring
Co-organizer
Research Group on 3D Printing of Composite Materials
Japan Society for Composite Materials (JSCM)
English organization name is provisional and subject to final confirmation.Updates
Latest information
The call for presentations has closed.
First local website prototype prepared. Program, speakers, access, and participation details remain provisional.
Contact
More information is coming.
Contact information will be announced after committee confirmation.