‒ To seek machine safety and relief
by making full use of multi-scale mechanics

Solid Mechanics Lab.

Prof. Shigeru Hamada, Assoc. Prof. Toshiyuki Kondo, Assist. Prof. Shohei Ueki

Research topics
Elucidation and establish a
prediction method of damage
accumulation mode fatigue
crack propagation.
Elucidation of failure modetransition mechanism in metal
fatigue and its application toactive control machine design.
Development of parts strength
theory, taking fatigue strength
design of a material that has
undergone material change due
to processing, as an example.
Development of fatigue crackclosure evaluation method forrational fatigue design of newmaterials.

(a)Exploring the fracture mechanism of
3D printer materials

10μm

(c)

(b)

(c)
2μm

Damage accumulation mode
fatigue crack propagation
mechanism elucidation
Elucidation of the size effects on fracture
strength of metallic thin films

Elucidation of the size effects on
fracture mechanisms andstrength of metallic thin films
Elucidation of the microscopic
deformation and fracture
processes of metallic thin films
based on nano-observation andmicrostructural analysis

Approximate the machining influencezone to defects for safe design

Elucidation of the fracture process ofmetallic thin films

ー For the safety of structural materials ーMultiscale/Modal damage analysisProf. H. Toda
Assoc. Prof. O. Takakuwa
Assist. Prof. H. Fujihara

High resolution 3D/4D imaging

Suppression of H-embrittlement in aluminum alloy for aircraft by Local H-partitioning
Development of 3D/4D imaging for in-situ fracture behavior in high-strength steels
3D/4D imaging for strain-induced martensitic transformation with H-embrittlement
Effect of alloying element on the H-solubility evaluated by atomic-scale calculations

・Nano particles
Microscopic・Interface decohesion
properties ・Deformation behavior
・Fracture behavior
Micro analysis tocrack tip

TEM
First principle
study

MgZN2

Al

Ni Al,Ti

3D crystal
identification

・Static strength
Macroscopic ・Dynamic strength
properties ・Ductility
・Fracture toughness
Local H-distribution

3D imaging ofphase transformation

Fractographical analysis

3D imaging of crack tip
Interface

Atomic scale analysis Crystallographic analysis

Macroscale analysis

Flow control systems laboratory

Prof. Satoshi Watanabe
Associate Prof. Shin-ichi Tsuda
Assistant Prof. Taiki Takamine

Internal flow in fluid machinery and related fluid flow phenomena
Pumps and flow instability
R&D of contra-rotating axial flow pump
Cavitation instabilities of inducer
Unsteady flow/fluid forces in multi-stage pump

Utilization of natural flow resources
Savonius-type hydro-turbine for low head flow

Cavitation
Unsteady cavitation around hydrofoil/cascade
Thermal effect of cavitation
Cavitation in automotive torque converter

Liquid-vapor interface and bubbles
Characteristics of evaporation/condensation process
Bubble formation process in liquid rocket fuelKoji Shimoyama (Prof.)
Hideo Mori
(Assoc. Prof.)
Kazuya Kusano (Assist. Prof.)

For creating innovative uid machinery✓Clarify ow phenomena✓Design uid machinery

Numerical simulations (supercomputers)

fl

fl

fl

Experiments (optical measurements)

Optimization (mathematical science)Intelligence (data science)

Prof.
Shoji MORI
Assoc. Prof. Yoshinori HAMAMOTO
Assist Prof. Yutaro UMEHARA

Thermal Energy Conversion Lab.
MISSION

Advance energy conversion efficiency
for carbon neutral

Thermal hydraulics〇Boiling heat transfer<Boiling>

New energy system〇HydrogenHydrogen bubble

Micro porous<High speed Image>〇Hydrogen storage alloy packed bed 〇 Flocked heat transfer surface• Expansion of hydrogen
Storage alloy
storage capacity perunit volume
desorbed• Increased reaction rate Absorb• Fiber flocked surface• Formation of liquid film
• Promoting heat recovery
500 µmThermofluid Physics Lab

Prof
Assoc Prof

K.MIYAZAKI
N. SAKODA

Research on overcome the conventional limits of thermal transport for applications
in energy conversion and thermal management

Heat conduction control

Thermal conductivity
Measurements ofnano-structured materials

Thermophysical propertiesof new refrigerants

Developments ofEnergy harvesting devices

Hydrogen refueling protocol
at hydrogen stations

Spectral thermal radiative
properties control
Absorptance (-)

1.0
0.8
calc*
0.6

Deposit film
Particles
Nitrided particles
TiC
TiN

0.4
0.2
0.0 2

Spectral reflectancemeasurement system

Vapor-liquid Equilibrium
Measurement Apparatus

3

4

5

6 7 8 9

2

1

3

4

5

6 7 8 910

 (m)Development of a SolarabsorberDevelopment of a simulation software forhydrogen refueling at hydrogen stations

Thermal Physics & Engineering

Professor
Masamichi KOHNO

Research Topics
Effect of high-pressure torsion on material’s thermal transport properties
Measurement of thermophysical properties of nano materials using laser
beam techniques.
Liquid-vapor phase change heat transfer (Spray cooling)
Behavior and heat transfer of micro droplets impinging on hightemperature solid surfaces

サンプル
ポンプ光
Annealing

プローブ光

400°C
How thermal propertychanges according to
its structure?

Micro droplets impinging
on high temp. surfaces

Laser system forthermophysical property
measurement

Reactive Gas Dynamics Lab.

Prof. T. Kitagawa
Assoc. Prof. E.C. Okafor- Study of the science and technology of combustion
Our Goals

 Improvement of thermal efficiency (Energy saving) Environmental preservation (De-carbonization, Emissions control) Fuel diversification (Cost reduction, Energy security)

Our Targets

 Propulsive devices (Automobile engines, Supersonic aircraft engines, etc.)
 Stationary devices (Industrial gas turbines, etc.)
 Gas combustion, Liquid fuel (spray) combustion, Supersonic combustion, etc.

Our Themes

 Experiment and simulation for understanding the science, and developing new concepts, etc
of combustion. Combustion of hydrogen, ammonia and E-Fuels from renewable energies,
Engine combustion, PM(soot) formation, Supersonic combustion, Chemical kinetics etc.

Experimental studies using advanced laser diagnostics

Numerical studies using massive parallel computer

Chemical kinetics

Laser visualizationof a flame

CFD on turbulent flamesHigh pressure
test chamber
for burners
CFD on industrial
Exp on hydrogen Velocity field in a
CFD on engines
burners for ammonia
combustion
gas turbine burner

: Osamu MORIUE
Assistant Professor : Shion ANDO
Engine Systems Lab. Professor

Research topics

Enhancement of ignition and burning rate of lean mixtures by Pulsed Flame Jet
Ignition timing control of Homogeneous Charge Compression Ignition Combustion
by Pulsed Flame Jet
Study on vaporization, spontaneous ignition and combustion of fuel sprays
Improvement of spark ignition of lean mixtures in a fast gas flow
Numerical simulation of spray combustion
Soot formation

Premixed combustion

Gasoline engines

Rapid compression machine

Improvement of
spark ignition

Ignition timing control of HCCI
combustion by Pulsed Flame Jet

Spray combustion

Numerical simulation

New concept of internal
combustion engines

Diesel engines
Gas turbine engines

Detailed mechanism of
combustion phenomenaVibration and Acoustics Lab.
Research topics

Active noise control in 3-dimentional sound field.
Large scale acoustic analysis using lumped mass model.
Vibration damping.
Evaluating and detecting softness of human body.

3-D lumped mass model
Softness sensor for human bodyExperiment of Active Noise Control in
anechoic chamberSound pressure distribution(example of calculation result)

Magnetic damper

Dynamics of Machinery Lab.
New diagnostic techniqueusing ultrasound wave

Prof. INOUE Takumi
Assoc. Prof. MORI Hiroki

Vibration analysis of automobile
structure

Transmission pass

©石川歯科医院

Evaluation of slackness using ultrasoundpulse wave (Model and simulation)

Mechanical automatic tuning
resonator for vibration-powered
generator

Study for efficient vibration analysis ofautomobile body structure

Analysis & applicationof self-synchronization

Nonlinear openloop control

Rotating axis, connecting to bearing
Base of oscillator
Oscillator

Accelerometer

ExciterNovel mechanism for
automatic tuning to resonanceTamping rammer using
self-synchronization

Nonlinear crane system

System Engineering Laboratory Prof. Kazuo KIGUCHI, Assoc. Prof. Satoshi NISHIKAWA, Assist. Prof. Yasutaka TSUJI
Sports Robots

Care Robots

Power Assist
Perception Assist

Kinesthetic illusion andmotion change byvibration stimulationon the tendon

Rehabilitation

Motion intention estimation

Acquirement of motor skills
Practice support

Measurement and analysis of biosignals/motion

Investigation and exploitationof human characteristics

Parallel link robot

CONTROL
ENGINEERINGLABORATORY

Grasping for soft objects

SOFT
ROBOT

Motoji Yamamoto Prof.
Yasutaka Nakashima Assoc. Prof.
Ayato Kanada Assist. Prof.
Extendable and bendable arm
Analysis of wheelchair’s
caregiverBack pain prevention chair

HEALTHCAREROBOT
Pointing device for surgeon task

HUMAN’S
CONTROLLEDPERFORMANCE
Evaluation of fall slippingStanding stability

FES control

Human-Centered Robotics Laboratory• From human to robotics
To realize the advanced motor intelligence of human’s movements in robotics• From robotics to humanTo realize flexible and dexterous robots that can support human’s daily life
Numerical simulation for the musculoskeletal system

High-backdrivableparallel-link manipulator with CVTMulti-fingered robotic handManufacturing Process

Professor Syuhei Kurokawa
Assoc. Prof. Terutake Hayashi
Assist. Prof Takao Sajima

Precision Machining Lab.

Development of the state-of-the-art manufacturing processes and measuring
techniques for the green devices and machine elements

Gear, 3D shape（Measurement）

CMP
Tool wear（Measurement） （Processing）

m
1

mm

Coating Femto second laser（R&D） ablation （Processing）

Nano particle diffusion（Measurement）

µm

1/103

1/106

nm

1/109

Processing amount, Measurement volume
Accuracy (Processing, Measurement)

Giga range processing and evaluation
I . Ultra-Precision Manufacturing Technology(1) CMP(Chemical Mechanical Polishing) for energy saving device materials(SiC, Sapphire, Diamond, Silicon, GaN, Atmosphere controlled CMP machine, Slurry, Polishing pad, Recycling, etc.）(2) Ultra-precision manufacturing and performance evaluation (Ultra-high-speed hobbing, Coated tools, etc.)

II . Ultra-Precision Measuring Technology(1) Optical measurement & evaluation (Nano particle sizing using fluorescent probe, Ultra-precision defectdetection by femtosecond laser, Ultra-high-precision measurement of transmission error, etc.）(2) R&D of 3D measurement and testing method (Test and evaluation of high-speed CMM, Gear accuracy
evaluation by whole circumference scanning measurement, etc. )III . R&D of Creative Manufacturing Technique and Machines

Film formation of organic LED, Conformal coating and Electro spray application for MEMS, Development of highthroughput CO2 capturing system at low temperature, Low power laser processing with surface excitation

Material Processing Laboratory

Prof. K. Shinagawa, Assoc. Prof. N. Yodoshi, Asst. Prof. K. Kudo

Variable approaches to “Manufacturing”

In our laboratory, we analyze the sintering process and develop new processes for powder materials
such as metals and ceramics. The obtained results are utilized for a wide variety of applications.

Analytical approach

From various computer analysis of powder metallurgy process, sintering mechanism,high precision and high functionality of industrial products are realized.
Examples of time evolution of
structuresduringsintering,
applying the Phase Field Method．

An example of part-scale sintering
analysis by FEM, changes in partshape and structure due tosintering can be predicted．

Experimental approach

Process development is the basis of manufacturing. We are designing a newprocess for innovative technology.

500 µmDevelopment of new process for producing
functional particles （left）
Development of gas atomization process（right）

Metal Injection Molding (MIM) technology which can produce
metal parts with complex shapes without machining（left ）Development of powder rolling process technology（right）

Machine Elements and Design Engineering Laboratory
Yoshinori SAWAE, Professor
Seido YARIMITSU, Associate Professor
Takehiro MORITA, Assistant Professor
 Basic studies for establishing design guideline of machine elements used in various

applications, from medical devices to machine components in hydrogen energy systems
 Tribology in biomedical engineering field is one of the main research target.

Wear of prosthetic jointmaterials

Superlubricity mechanisms inarticular cartilage

Structural optimization for dental implant

Biphasic lubrication in highly hydratedhydrogel

Development of hydrogel
artificial cartilage

Super-low friction with self-assembled
carbon transfer film

Wear of polymer seals in high pressure hydrogenTribology Laboratory

Prof. K. Yagi
Assist. Prof. H. Tanaka

Tribology for energy saving and safety
Better understanding of complicated phenomena in friction areas

Observation grease flow by fluorescence

FEM analysis of metal seal for highpressure hydrogen

Element analysis of chemical
reaction films in hydrogenenvironments

Friction tests in high pressure hydrogen

Improvement of lubrication
performance by textured surface

Observation of lubrication films

Biofunctional Enginnering Lab.
Porf. Susumu Kudo, Assoc. Porf. Naoki Takeishi, Assist. Prof. Saori Sasaki
An overriding objective of our group is to elucidate how cells and tissue adapt to mechanical environments, and use
this knowledge to gain a deeper understanding of mechanics of homeostasis and various diseases. Both experimental
and computational approaches are employed to identify new hypothesis.
Mechanical stimuli
Biomimetic materials(rigidity & cell migration)

Intercellular flow ofcancer inhibitor/promoter

Time

Elucidation of cancer migration▶Control of cancer metastasis
GPGPU,
Deep learning,AI, etc.

Time

Elucidation of behavior of cancer inhibiter/promotor▶Cancer detection/treatment

Numerical simulation

Stress for aggregated molecules

Cellular flow in microvessels

Cell experiment

MEMS techniques,
Gene transfer,
Live imaging, AI, etc.

Respiratory performance in a patientBiomedical Microfluidics Lab.
Profs. Yoko Yamanishi, Shinya Sakuma, Naotomo Tottori
Biomedical Applications
Spatiotemporal microfluidics
Researches on Minimally invasive cell therapy

Investigation of ultra-fast microfluids“Daily activities”

Needless injector for medical applications

Discussion, Writing Journal, Presentation,
Design, Fabrication, Experiment, Analysis

100 μmNovel medical devices & applications“Seamless researches”
Fundamentals to Applications
Evaluation system ofElectrically induced bubbles

Microfluidic chips
based on MEMS fabrication

On-chip cell manipulations & analyses
with high-speed & high-accuracy

Cell manipulation & measurement
utilizing high-speed vision integrated system

Fabrication technologies for
wafer level 3D structures 500 μm

Lab on a chip
Micro total analysis systems

Micro/Nano-mechatoronics

Microfabrication/MEMS

Fundamental micro/nano fluidics

Interdisciplinary researches on “Bio” “Medical” “Microfluidics (Mech. Eng.)”
Kyushu University, Biomedical Microfluidics Lab.

Advanced Medical Devices Lab.

Prof. Jumpei Arata
Assistant Prof. D.S.V. Bandara

Research on new Medical Devices based on Robotics
Our research aims at new medical applications based on Robotic technology.
Robotic technology includes many elements – mechanism, sensor, control,
system integration and etc. We study about these elements to realize further
effective medical applications. Find more on http://amd.mech.kyushu-u.ac.jp/

World smallest 2mm robotic surgical manipulator

Hand rehabilitation robot currently tested in clinics

Tele-manipulation system
for the orbital space station

Hydrogen Utilization Processes Laboratory
Prof. K. Sasaki, Associate Prof. Y. Tachikawa et al.

Research topic
Studies on
Low-emperature Fuel Cells (PEFCs)(Electric power units for mobility and portable applications)・Novel electrocatalyst development and evaluation
・Next-generation proto-type cell development

Carbon-free
PEFC catalyst(Sasaki et al.)Fuel cell electrode(Taniguchi et al.)Studies on High-temperature Fuel Cells
and Electrolysis Cells (SOCs)

Laboratory（High electric efficiency & no precious metal）
・Cell materials and durability for reversible cells
・Visualization and system simulation

Fundamental Studies on Hydrogen
Energy Related Technologies
・Hydrogen production from renewable energy
・Study on hydrogen sensors

Visualization offuel cells(Tachikawa et al.)Microscope
Laboratory Building（NEXT-FC）

You can learn research and development skills for fuel cells and related technologies!
“Fabrication of materials and cells ⇒ Measurement of cell performance and durability⇒ Microscopic characterization and various electrochemical / materials analysis“2Fuel Cell Systems Lab.

Prof. Ito, Associate Prof. Kitahara
and Assistant Prof. Nakajima

Global demand for fuel cell and electrolyzer researches - Energy and environmental issues, global warming©JAMSTEC

Fuel cell vehicles

Marine fuel cells

H2Electrolytic hydrogen production
from renewable energy

Fuel cell power generation forresidential and industrial use

Aircraft fuel cells

Mechanical Engineering
・Thermodynamics
・Heat transfer engineering
・Fluid dynamics

Fuel cell / Electrolyzer
・Chemical/electricalenergy conversion（PEFC・PEWE・SOFC・SOEC)・High efficiency with direct conversion
・Without mechanical link

©JAXA

©JAXA

Space exploration

System・１＋１＝２？ ・Optimization
・Measurement, analysis, anddiagnostic techniques(Electrochemistry, imaging,permeation test)

porousObservation of 3D microstructureof porous media

Experimental evaluation of physicalHeat, mass, and charge transport simulations properties and performance

Proposal of optimal designs and novel structures with elucidationof multiscale transport phenomena in fuel cells and electrolyzers

https://www.mech.kyushu-u.ac.jp/~fcsl/en/Hydrogen Storage Systems Laboratory
Aims and scope• Elucidate the fundamental principles ofhydrogen embrittlement.
• Contribute to revisions of domestic- andinternational- regulations on material selection
and strength design (e.g., design by rule anddesign by analysis) for components used in highpressure gaseous hydrogen.
• Find and develop new structural materials
having higher resistance to hydrogen with lower
cost.

Prof. Hisao Matsunaga
Strength properties which is necessary
for the strength design of high-pressurehydrogen components

In airIn 83 MPa H2

Material testing in
high-pressure H2
gas up to 140 MPa

Ductility loss of type
304 stainless steel inhydrogen gas

Contribution for safer
and more economichydrogen society

Keywords:
Hydrogen Storage, Hydrogen
Embrittlement, Fatigue and Fracture,
Strength Design, Regulation Review

Advanced Hydrogen Materials Lab.
Research topics
Influence of fillers on hydrogen penetration properties and blister fracture of rubber composites for
O‐ring exposed to high‐pressure hydrogen gas.
Evaluation of sealing behavior of rubber O‐ring in high pressure hydrogen gas.
Development of rubber materials for diaphragm pump.
Analyses of polymer materials after high‐pressure hydrogen exposure.
NBR

Seal Break

Cross section

140 mm

5.5 mmSeal breaks after 100MPa,
30°C ×25 cycles

Fracture
Analyses of mechanism of blister fracture of rubbermaterials during high-pressure hydrogen exposure

High durability rubber materials for O-ringof high-pressure hydrogen gas vessels
Hydrogen gas

1H NMR

Evaluation of sealing
behavior of rubber O-ring inhigh pressure hydrogen gas

Development of highfrequency fatigue-resistantrubber materials

High reliability highpressure hydrogen gas
seal design

Long-life diaphragmpump for hydrogen gas

Analyses of polymer materials by
NMR, IR, Raman spectroscopy
and measurement of physicalproperties after high-pressurehydrogen exposure

Molecular design guidelines
for polymer materials forhydrogen energy system