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Abstracts of Papers (2006)
Department of Mechanical Engineering*nonmember

Tips on Using Vacuum Techniques, Yasuyuki SUZUKI, Seimitsukougakkaishi, Vol.72 No.2 pp.191-194, 2006.

Evaluation of Fracture Surface of 11/4Cr-1/2Mo Steel by Residual Magnetization Induced fromInverse-Magnetostrictive Effect, Hiroichi HASE, Shigeo KOTAKE, Mitsuhiro OHOTA, Hiroshi KAWAKAMI and
Yasuyuki SUZUKI; Key Engineering Materials (Engineering Plasticity and its Application from Nanoscale to
Microscale), 340-341, pp.549-554, 2006.

A Fingertip Guiding Manipulator for Mental Image Creation of Multi-Stroke Drawings, Yoshihiko Nomura, Yuki Yagi,
Tokuhiro Sugiura, Hirokazu Matsui, Norihiko Kato, Microsystem Technologies, Vol. 13, No. 8-10, pp. 905~910, (Apr.
2007), ISSN 0946-7076 (Published Online: Nov. 2006)

Relationships between the Camera Calibration Accuracy and the Imaging Condition, FUJIMOTO Takashi 1
NOMURA Yoshihiko 2 ZHANG Dili，Trans. of JSME PartC,72(706)，pp. 1695-1700，2006

A Fingertip Guiding Manipulator for Mental Image Creation of Multi-Stroke Drawings, Yoshihiko Nomura, Yuki Yagi,
Tokuhiro Sugiura, Hirokazu Matsui, Norihiko Kato,CD-ROM Proc. of ASME/JSME Joint Conference on
Micromechatronics for Information and Precision Equipment (MIPE 2006), 2006

Fingertip Guiding Manipulator: Haptic Graphic Display for Mental Image Creation, Yoshihiko Nomura, Yuki Yagi,
Tokuhiro Sugiura, Hirokazu Matsui, and Norihiko Kato, Proc. of 9th Annual International Conference ICCHP 2006
(Computers Helping People with Special Needs) 2006

High-quality and small-capacity e-learning video featuring lecturer-superimposing PC screen images, Yoshihiko
Nomura, Michinobu Murakamia, Ryota Sakamoto, Tokuhiro Sugiura, Hirokazu Matsui, and Norihiko Kato ,Proc. of
SPIE Conference on Intelligent Robots and Computer Vision XXIV:Algorithms,Techni ques,and Active Vision 2006
“High-Quality and Small-Capacity Lecture-Video-File Creating System for Chalk-and-Talk Based Lecture,” Ryota
Sakamoto, Yoshihiko Nomura, Norihiko Kato, Proc. of E-Learn 2006
A formulation of camera parameter calibration error due to reference point setup error,
Yoshihiko Nomura, Proc. of Asia International Symposium on Mechatronics (AISM) 2006

Takashi Fujimoto，

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Automatic control of a monitoring camera for remote manipulator operation”，Masahiko Niwa, Naoaki Tsuda,
Norihiko Kato, Yoshihiko Nomura and Hirokazu Matsui，Proc. of the 15th IEEE International Symposium on Robotand Human Interactive Communication (RO-MAN06), pp.151-156, 2006

An ergonomic study on multi screen type VDT work, Shin SAITO*, Norikazu OHNISHI*, Zojiro
KATOH*, Masaru MIYAO*, Kaoru ITO*, Ryojun IKEURA and Kazuki MIZUTANI, Journal of Society
for Occupational Safety, Health and Ergonomics, 7, 1, pp.17-22, 2006.
The aim of this study was to evaluate the characteristics of multi screen type visual display terminals(VDT) work by the analyses of work performance and subjective assessment. The comparative study, multiscreen and single screen type VDT workstation, was carried out to get some ergonomic data which would
be applicable to the guidelines and recommendation for VDT operations using multi screens. Seventy
healthy persons, 32 males and 38 females, whose ages ranged from 18 to 47 years (average age: 23.4) wereselected as subjects. They performed data search and entry task for 5 minutes using both word processing
and spread sheet software in each workstation. The work efficiency and the subjective assessment of multiscreens were significantly superior in comparison with a single screen. The reason why a multi screen typeworkstation was evaluated highly is that visibility and operability are better than with a single screen. The
characteristic of multi screen type VDT work is operation method and increased efficiency by dividing
software into two screens. It is necessary to examine workload, sense of incongruity and skill of operation,and other possible problems before spreading widely to many work places.

Impedance control for an industrial power assist device considering contact operations, Hiroyuki KATO,
Ryojun IKEURA, Shinpei NOGUCHI, Kazuki MIZUTANI, Hisashi NAKAMURA* and Tomohiro
HONDA*, Transactions of the Japan Society of Mechanical Engineers, 72, 714, pp.214-221, 2006.
This paper describes a control method for a power assist device used in factories. An adaptive
control scheme is employed to control the power assist device and to estimate its dynamic parameters.
Using the adaptive control, the maneuverability of the system is good in free space but it is very dangerous
in the task of which an object supported by system contacts on a floor or a wall. Therefore, we propose an
improved system controlled by an adaptive control in which the local control method changes to a feedback
or a feed forward control in the contact condition. The improved system detects collisions based on the
difference between the actual input torque to the power assist device and reference input torque, which is
calculated based on the estimated parameters of the manipulator dynamics. Then, the effectiveness of thesystem is shown.

Ergonomic evaluation of multi display type VDT, Shin Saito, Takahiro NAKATSUKASA, Ryojun
IKEURA and Kazuki MIZUTANI, The 9th Korea-Japan Joint Symposium on Ergonomics Osaka,
pp.524-525, 2006.
The aim of this study was to evaluate working conditions using multi display VDTs in terms of work
performance, head movement and EMG activities of the neck. A comparative study using single, multi andlarge display type VDT workstations, was undertaken to obtain ergonomic data applicable to the guidelines
and recommendation for VDT operations using multi displays. Subjects comprised 1 0 healthy volunteers

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who performed data search and entry tasks for 5 min on each workstation. Work efficiency of the single
display was inferior compared to multi and large displays. Head movement was greater with multi andlarge displays than with a single display. EMG activities did not differ significantly between multi and large
displays. The characteristics of a multi display type VDT work is increased efficiency by dividing software
into 2 displays. Workload, sense of incongruity, skills required for operation and other possible problems
must be examined before spreading this approach becomes widespread in workplaces.

A rating method for the vehicle steering based on the impedance of human arms , Ryojun IKEURA,
Hiroyuki HOSHINO, Daisuke YOKOI, Yoji KANEHARA*, Mitsuhiro HOSHINO* and Kazuki
MIZUTANI, Transactions of Society of Automotive Engineers of Japan, 37, 4, pp.33-38, 2006.
The relationship between the stiffness of human arms and the subjective evaluation in the operationof a steering wheel is investigated. First, the estimation and its normalization method of the arm stiffness is
proposed for avoiding the difference among individuals. Next, the experiments using the steering control
device are conducted to obtain the arm stiffness and the subjective rating under the several conditions.
Finally, it is verified that the value of the normalized arm stiffness correlates strongly to the subjective
evaluation.

Allocation of Three Control Forces to Four Actuators for 3-DOF Hybrid Vibration Isolation System,
Kazuki MIZUTANI, Keisuke ITO and Ryojun IKEURA, Proceedings of the 13th International Congress on
Sound and Vibration, pp.CDROM, RS-03_509, 1-8, 2006.
This paper treats a hybrid type vibration isolation system for 3-DOF vibrations, that is, bouncing,
pitching and rolling vibrations. The hybrid type system is composed of passive spring-damper system andactive system with electromagnetic actuators. The controller for the vibration isolation system derives one
control force for bounce and two control moments for pitch and roll in regard to the center of gravity.
Usually, an actuator to supply vibration control force is set in each supporting part at the four corners of theloading platform. The allocation of three control outputs to four actuators is not unique because of
redundancy. In this paper, the allocation of the control output is discussed in detail.

Optimal Vibration Control for Overhung Rotor System Using Actively Flexible Pedestal, Kazuki
MIZUTANI, Yukinobu NISHIYAMA*, Kazuhiro IIDA* and Ryojun IKEURA, Proceedings of the
ACTIVE 2006, pp.CDROM, No.26, 1-11, 2006.
This paper describes an active vibration control to effectively reduce the unbalanced vibration of an
overhung rotor system. A flexible bearing pedestal supporting the overhung rotor is installed in four pairs of
U-shaped electromagnets as a control device. The electromagnets give a flexible pedestal the control force
to effectively reduce unbalanced vibrations of the overhung rotor indirectly. The optimal regulator theory isapplied to decide the control gain suppressing the vibrations of the overhung rotor. Frequency response
curves are simulated numerically, and the optimal feedback gains to give the effective vibration suppression
performance are provided. For practical use, the simplification of the rotor model for controller
design and the application of the Kalman filter are also examined. The numerical results are compared withexperimental ones for the overhung rotor system with the vibration control device, and both results show

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the similar tendency in our study.

Characteristic of 2 DOF cooperation task by two humans, Shahriman Bin Abu Bakar, Yuichiro HANDA,
Ryojun IKEURA and Kazuki MIZUTANI, Proceedings of SICE-ICASE Internation Joint Conference 2006,
pp.296-301, 2006.
In this research, we propose to analyze the characteristic of human-to-human cooperation in verticalmotion. The experiment subject is divided into master and slave category where the slave is required toclose their eyes during the experiment. Experiment devices are equipped with 3D position sensors andForce sensors to measure the position, angle and force value. By differentiating those values, speed, angularvelocity and torque value are known. This research is concentrating the special characteristic that occurs to
the slave side during human-to-human cooperative work where the weight, distance and speed are varied.

Development of 6-Axis Material Tester for Measuring Mechanical Spine Properties, M. Fujiwara*, T.
Masuda*, T. Inaba, T. Katoh, Y. Kasai, S. Ito*: Journal of Robotics and Mechatronics, Vol.18, No.2,
pp.160-165, 2006.
Because mechanical spine properties having multiple degrees of freedom (DOF) are generally
difficult to measure, we developed a parallel 6-axis material tester with hybrid position/force control. We
give examples of 6-axis testing and results of material tests using polyurethane rubber and animal spines.
Quantitative Evaluation of Left Ventricular Wall Motion in Patient with Coronary Artery Bypass Grafting
Using Magnetic Resonance Tagging Technique, T. Inaba, T. Nakano, M. Tsutsumi, S. Kawasaki*, Y.
Kinosada*, M. Tokuda: JSME International Journal, Series A, Vol.49, No.4, pp.597-603, 2006.
Left ventricular wall motions during systole were investigated from a mechanical perspective byusing a magnetic resonance tagging technique. Subjects were 7 patients with coronary artery bypass
grafting (CABG). First, by analyzing strain in the left ventricular wall, cardiac contractility was evaluatedin the patients with CABG. Next, by calculating displacement in the myocardial wall, paradoxical
movements following CABG were quantitatively evaluated. Strain analysis showed local decreases incircumferential strain in 4 of 7 subjects. The results of displacement analysis clarified that following CABG,
the degree of radial displacement was small in the septal wall and large in the lateral wall, andcircumferential displacement towards the septal wall occurred in the anterior and posterior walls. Since thisbehavior was seen in both reduced and normal cardiac contractility groups, paradoxical movements in thepresent patients were not caused by reduced cardiac contractility, but rather by rigid-body motion of theentire heart.
Shape Memory Characteristics of TiNi Casting Alloys Made by Using Self-propagating High-temperature
Synthesis, K. Kitamura*, T. Kuchida, T. Inaba, M. Tokuda, Y. Yoshimi*: Materials Science andEngineering A, Vols.438-440, pp.675-678, 2006.
Self-propagating high-temperature synthesis (SHS) is a new method of making an ingot of TiNi.
This method shows little gravity segregation. The purpose of this study is to investigate the difference ofthe shape memory characteristics of the TiNi casting alloys made from a SHS ingot and from a
conventional melt cast ingot. The samples used in this study were rods made by centrifugal casting.
Differential scanning calorimetry (DSC), X-ray diffraction, and tensile test were used to examine the shapememory characteristics on the samples. The heat treatment conditions were 773 K–1.8 ks and 1073 K–3.6
ks, respectively. The DSC samples were both ends (the top and bottom area) of the rod samples. The results

A―5of the XRD measurements showed that TiNi phase was obtained in all the samples. In contrast, the result of
the DSC test showed that more gravity segregation effect happened in the melt cast sample than in the SHS
sample. As the conclusion of this study, gravity segregation had little effect in the SHS ingot sample.
Superelastic Property of Ti-Ni Alloy Produced by Casting After SHS, K. Kitamura*, T. Kuchida, T. Inaba,
M. Tokuda, Y. Yoshimi*: Materials Transactions, Vol.47, No.11, pp.2867-2870, 2006.
The superelastic properties of cast Ti-Ni shape memory alloy (SMA) were studied. Base materials
were prepared as a melting method ingot and as a self-propagating high-temperature synthesis (SHS) ingot.
The composition of these ingots was Ti-50.8 at%Ni. Each ingot was cast into a rod shape by centrifugal
casting. The heat-treatment conditions were 773 K for-1.8 ks and 773 K–1.8 ks → 873 K–3.6 ks. Shapememory characteristics were measured by differential scanning calorimetry (DSC), X-ray diffraction(XRD) and a tensile test. All casting specimens have good shape memory characteristics. According to
DSC measurements, the melt method specimens show gravity segregation.

Mechanical Evaluation of Cardiac Function in Heart with Disease by Numerical Simulation, M. Tsutsumi,
K. Yanagisawa, T. Inaba, M. Tokuda: Proceedings of 5th World Congress of Biomechanics, pp.563-566,
2006.
A numerical simulation system using the three-dimensional finite element method (3D-FEM) is
established to reproduce the performance of the left ventricle during one cardiac cycle, which may
ultimately provide useful information for medical diagnosis. In this study, the diseased human heart isanalyzed by using the proposed numerical simulation system and the numerical results are composed withmeasurements results.

Bonding Process of Al/Cu bonding with liquefaction after solid state diffusion in air,Hiroshi Kawakami, Junya Nakajima, Jippei Suzuki
Proc. of 2nd JWS-KWS Joint Symposium of Young Researchers, Preprints of the Natioal Meeting of J. W. S., Vol.79,
pp.140-141(2006)

Effect of Bonding Conditions on Al/Cu Diffusion Liquefaction Bonding, Hiroshi Kawakami, Junya Nakajima,
Toshiharu Kawabe, Jippei Suzuki, Proc. of Sino-Japanese Young Researchers Forum, pp.1-4(2006)

Fundamental Studies on Remote Laser Cutting for an ALIMS Robot, Muneharu KUTSUNA*, Jippei SUZUKI,
Hiroshi KAWAKAMI, Documents of International Institute of Welding, No.IE-413-06, pp.1-8, (2006)

Behavior of Mg in Al/Cu Diffusion Liquefaction Bond, Hiroshi Kawakami, Masanori Fujiwara, Junya Nakajima,
Toshiharu Kawabe, Jippei Suzuk, Proc. of The First South-East Asia International Institute of Welding Congress,
pp.232-243(2006)

Bonding for Aluminum in Air using Some Insert Metals, Hiroshi Kawakami, Keiko Kimura, Jippei Suzuki, Proc.
Advance Technology in Welding Work(CD-ROM), pp.1-7(2006)

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Application of Resistance Heating Technique to Hot Stamping of High-Strength Steel Sheet, Seijiro MAKI, Yuuki
TANAKA*, Ken-ichiro MORI*: Journal of the Japan Society for Technology of Plasticity, 47(544), pp.394-398, 2006
(in Japanese)

Improvement of Product Strength and Press Formability of Al-Mg-Si Alloy Sheets by Resistance Heat Treatment andArtificial Aging, Minoru ISHIGURO*, Seijiro MAKI, Ken-ichiro MORI*: Journal of Japan Institute of Light Metals,
56(6), pp.313-316, 2006 (in Japanese)

Thermo-Mechanical Treatment Using Resistance Heating for Production of Fine Grained Heat-Treatable AluminumAlloy Sheets, S. Maki, M. Ishiguro*, K. Mori*, H. Makino*: J. Mater. Process. Technol., 177, pp.444-447, 2006

Mechanism of Improvement of Formability in Pulsating Bulging Hydroforming of Tubes, Ken-ichiro MORI*,
Tomoyoshi MAENO*, Seijiro MAKI: Journal of the Japan Society for Technology of Plasticity, 47(548), pp.835-839,
2006 (in Japanese)

Mushy-State Forging of Aluminum Alloy Using On-Site Resistance Heating, S. Maki, T. Shibata*, H. Shibata*, K.
Mori*: Proceedings of the International Conference on Advances in Materials and Processing Technologies, AMPT
2006, Las Vegas, NV, July 30-Aug. 3, CD-ROM, 2006

Improvement of Formability and Shape Accuracy in Pulsating T-Shape Hydroforming of Tube, Ken-ichiro Mori*,
Loh-mousavi Mohsen*, Kentaro Hayashi*, Seijiro Maki: Proceedings of the 2006 Japanese Spring Conference for theTechnology of Plasticity, pp.5-6, 2006 (in Japanese)

Press Quenching Using Resistance Heating of Ultra High Strength Steel Sheet, Seijiro Maki, Atsushi Hamamoto*,
Shouichi Saitou*, Ken-ichiro Mori*: Proceedings of the 2006 Japanese Spring Conference for the Technology of
Plasticity, pp.45-46, 2006 (in Japanese)

Oxidation Preventing in Hot Press Forming of Ultra High Strength Steel Sheet, Makoto Kishimoto*, Syouichi Saitou*,
Seijiro Maki, Ken-ichiro Mori*, Tatsushi Hayashi*, Toshihiko Okamura*: Proceedings of the 2006 Japanese Spring
Conference for the Technology of Plasticity, pp.47-48, 2006 (in Japanese)

Hot Blanking of Ultra High Strength Steel Sheets, Syouichi Saitou*, Makoto Kishimoto*, Seijiro Maki, Ken-ichiro
Mori*, Tatsushi Hayashi*, Toshihiko Okamura*: Proceedings of the 2006 Japanese Spring Conference for theTechnology of Plasticity, pp.49-50, 2006 (in Japanese)

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Resistance Heating Characteristics of Tubular Blank for Hot Press Forming of Ultra High Strength Steel Sheets, Seijiro
Maki, Makoto Kishimoto*, Naotaka Arisawa*, Ken-ichiro Mori*: Proceedings of the 2006 Japanese Spring
Conference for the Technology of Plasticity, pp.137-138, 2006 (in Japanese)

Decrease of Surface Cracks in Hot Shear Spinning of Cast Aluminum Alloy Castings, Minoru Ishiguro*, Yuuta
Isomura*, Ken-ichiro Mori*, Osamu Ebihara*, Daigo Sugiyama*, Takayuki Nonaka*, Seijiro Maki: Proceedings ofthe 2006 Japanese Spring Conference for the Technology of Plasticity, pp.211-212, 2006 (in Japanese)

Mashy-State Forging of Cast Iron Using Resistance Heating, Kazuhito Suzuki*, Seijiro Maki, Ken-ichiro Mori*:
Proceedings of the 2006 Japanese Spring Conference for the Technology of Plasticity, pp.345-346, 2006 (in Japanese)

Semi-Solid Forming of Titanium Alloy Using Resistance Heating, Seijiro Maki, Kazuhito Suzuki*, Ken-ichiro Mori*:
Proceedings of the 57th Japanese Joint Conference for the Technology of Plasticity, pp.135-136, 2006 (in Japanese)

Resistance Heating Characteristics in Local Heating Blanking of Ultra High Strength Steel Sheets, Shoichi Saito*,
Seijiro Maki, Ken-ichiro Mori*, Kanji Ueno*, Yasuji Hokazono*, Takuya Yamazaki*: Proceedings of the 57th Japanese
Joint Conference for the Technology of Plasticity, pp.139-140, 2006 (in Japanese)

Blowing of Aluminum Compact in Dies by Resistance Heating, Minoru Ishiguro*, Seijiro Maki, Ken-ichiro Mori*,
Hikaru Nisikawa*: Proceedings of the 57th Japanese Joint Conference for the Technology of Plasticity, pp.241-242,
2006 (in Japanese)

Modelings of Fiber Deformation During Machining Aramid-FRP, Eitoku Nakanishi, Masao Fukumori*, Yutaka
SAWAKI*, Kiyoshi Isogimi*: Proceedings of 16th European Conference of Fracture, CD-ROM, 2006

“Wind tunnel study on the velocity profile over roughness hill” Takao MAEDA, Yasunari KAMADA, Nobutoshi
NISIO, Keita NAKANO: WIND ENERGY, Vol. 30, No3, pp. 113, pp. 113-1163, 2006.
In this paper, the experimental results of velocity measurements around hill are described for various slops.
Three types of hill model are tested. The model hill has the equivalent roughness of the actual hill’s surface. As theresults, the flow pattern around hill shape is described. Also, it is shown that the separating point to the hill surface
depends on the upstream shape.

“Study on aerodynamic forces of HAWT” Takao MAEDA, Yasunari KAMADA, Hideyasu FUJIOKA, Jun SUZUKI,
Masami KAMIBAYASHI: Proceedings of JSME Fluids Engineering Division 84th Annual meeting, No.06-21,
CD-ROM, 2006.
The horizontal axis wind turbines are operated under skew inflow condition and it has tilt angle to keep theA―8

distance between tower and blade tip. Therefore, it is important to analyze the forces and moment of rotor with yawed
and tilted inflow condition. In this study, the wind turbine was placed with yaw miss alignment or changing the distance
between tower and rotor in a wind tunnel. Through measuring the forces and moments of HAWT with six-component
detector, the characteristics of rotor performance with yaw and tilt angle condition and influence of tower position are
considered.

“Study on Performance Improvement of Micro Wind Turbine with a Combination of Nosecone and Diffuser Casing”
Takao MAEDA, Yasunari KAMADA, Kenta ADACHI: Proceedings of RENEWABLE ENERGY 2006, P-W-29, pp.
909-912, CD-ROM, 2006.
This study is related to use wind turbines that installed in urban area. Such area has low annual wind speed withstrong turbulence. The purpose of this study is to enlarge the wind turbines output power and to improve the power
curve shape with a combination of nosecone and diffuser. In this study, the utilization of diffuser for wind turbines is
considered for increasing the avail ability of wind turbine. Otherwise, the nosecone with aerodynamic form wasintroduced. The nosecone has effect of improving the flow inside diffuser and performance of wind turbine when
operating in low tip speed ratio.

“Field Measurement of Unsteady Aerodynamics Load on the Blade of Field Horizontal Axis Wind Turbine” Takao
MAEDA, Yasunari KAMADA, Keita NAITO: Proceedings of RENEWABLE ENERGY 2006, P-W-17, pp. 865-868,
CD-ROM, 2006.
This paper describes the experimental results of field wind turbine rotor. The experiments are carried out with
10mdiameter of HAWT. The pressure distributions on the rotating blade are measured by the pressure transducers. The
blade root moment are measured simultaneously by the strain gauges. The mean wind speed are measured by a sonicanemometer, the local velocity of the test section is measured by 7 holes Pitot tubes. The relation between the
aerodynamic forces from pressure distribution and the blade root moment from strain gauges are discussed. The
measured moment from strain gauges show the similar fluctuation.

“Wind Tunnel Study on Velocity Profile over Hill” Takao MAEDA, Yasunari KAMADA, Nobutoshi NISHIO:
Proceedings of RENEWABLE ENERGY 2006, P-W-17, pp. 861-864, CD-ROM, 2006.
This paper shows the experimental results of the velocity profile over hill in wind tunnel. The experiments arecarried out with various two-dimensional hill models that contains of various slope shapes. 3 types of slopes are tested
as hill model, and they are divided for model upstream and downstream slopes at the top. In the measurements, theequivalent roughness to the ground is set on the hill surface. The velocity profiles are measured by two-dimensional
PIV. As the result, the velocity distribution around hill is shown for various hill shapes and the energy density in thewind is discussed from the viewpoint.

“Experimental studies on the wind turbine airfoils with dynamic state” Takao MAEDA, Yasunari KAMADA,
Masayoshi SAITO: Proceedings of JSME Annual meeting 2006 (2) No.06-1, pp. 255-256, 2006.
In generally, the two-dimensional airfoil characteristics in the static state are used for the wind turbine bladeA―9design. However, the wind turbines are operated in the natural wind with continuously changing in both speed anddirection. So, the attack angle of the blade element is fluctuating. Specially, in the inboard section attack angle have big
amplitude of fluctuation caused by the yaw misalignment. The airfoil characteristics in the dynamic state are important
for the inboard section. In this paper, the airfoil characteristics are investigated experimentally by the surface pressure
measurement. Also the dynamic characteristics with sinusoidal pitching motion are measured. As the results, it is foundthat the dynamic characteristics depend on the amplitude of stall angle. Furthermore, at low Reynolds number the stallangle for wind turbine airfoils is depend in both reading edge radius and suction side curvature.

“Experimental Study on unsteady aerodynamics effect on the blade root Load of HAWT field rotor”
Takao MAEDA, Yasunari KAMADA, Kei TANAKA, Keita NAITO, Yuu OUCHI: Proceedings of IEEE ISEM 2006,
CD-ROM, 2006.
This paper describes the experimental results of field wind turbine rotor. The experiments are carried out with
10m diameter of HAWT. The pressure distributions on the rotating blade are measured by the pressure transducers. The
blade root moment are measured simultaneously by the strain gauges. The mean wind speed are measured by a sonicanemometer, the local velocity of the test section is measured by 7 holes Pitot tubes. The relation between the
aerodynamic forces from pressure distribution and the blade root moment from strain gauges are discussed. The
aerodynamic force shows the fluctuation by the local wind speed and direction change. The measured moment fromstrain gauges show the similar fluctuation. That includes the short period vibration of the blade natural frequency.

“Studies on small scale generation plant by woody biomass gasification (Operation by upper type)”
Yasunari KAMADA, Takao MAEDA, Norio WATANABE: The 11th National Symposium on Power and Energy
Systems, No, 06-8, pp. 81-82, 2006.
The experimental results of the up-draft type gasification system are described. In the experiments, the small
reactor is operated in up-draft configuration. The operational condition of the reactor is described in detail.

“Studies on unsteady characteristic of field horizontal-axis wind turbine blade” Takao MAEDA, Yasunari KAMADA,Kei TANAKA, Yuu OUCHI, Keita NAITO: The 11th National Symposium on Power and Energy Systems, No, 06-8,
pp. 47-48, 2006.
This report describes a experimental study related to the pressure distributions on a field horizontal axis windturbine. It was known that a dynamic stall was occurred on a wind turbine blade. A cross-correlation function is used
for the data reduction to analyze the occurrence condition of the dynamic stall. As a result, when local angle of attack is
kept at the high angle, it turned out that dynamic stall occurs. The parameter of judgment for occurrence condition of
dynamic stall is also suggested.

“Japanese Wind Energy Prospect and Recent Technology” Takao MAEDA (invited lecture), Proceedings of 2006
Spring Conference of KWEA General Meeting & International Symposium, pp. 83-98, 2006.
There are many barriers to development of wind energy. Japan’s climate
condition is different from EU countries. It often experiences typhoons and lightning strikes due to its meteorologicalA―10

characteristics. Wind has a stronger turbulence level due to complex terrain. There are many endeavors being
undertaken to find the best solution for these problems. This paper reviews the wind energy activities in Japan. This
includes wind resources, market, trends, environment, prospects and R&D.

“WIND TUNNEL STUDY ON SURFACE PRESSURE MEASURENENT ON ROTATING BLADE OF
HAWT”Takao MAEDA, Yasunari KAMADA, Hideyasu FUJIOKA: Proceedings of the European Wind Energy
Conference ＆ Exhibition, BL3-138 CD-ROM, 2006.
Experimental results of the surface pressure distribution on a blade of a horizontal axis model rotor for therotating and non-rotating status are shown. The experiments were carried out in a wind tunnel with a 2.4m diameter
three-bladed rotor. The pressure distribution at r/R>0.7 showed good agreement between the rotating and thenon-rotating situations. The pressure distribution for the inboard section of r/R<0.5 showed a stall delay. The method ofdetermining the effective angle of attack for a rotating blade from LDV measurements is also discussed.

“The wind tunnel experiments for wind turbines” Takao MAEDA, Yasunari KAMADA:JSME Fluids Engineering Division, News Letter,
http://www.jsme-fed.org/newsletters/2006_9/no3.html#ctop, 2006.
The wind tunnel experiments for wind turbines are described. The wind turbines are aerodynamic device which
extracts the kinematical energy from wind. The performance of turbines strongly depends on the aerodynamics of therotor. To investigate the aerodynamics of the rotor, many experiments are carried out in wind tunnel. The velocity
measurements and pressure measurements techniques are explained in detail.

A Study on Machining Characteristics of Two-Dimensional Rectangular Abrasive Jet Machining Nozzle, Masaki
SUGIMOTO, Toshihiko SHAKOUCHI, Kohei HAYAKAWAand moriyasu IZAWA, Journal of the Japan Society for
Precision Engineering, 72-1, pp.121-126, 2006.

Control of Flow Separation and Drag Reduction of Abrupt Expansion Pipe, Toshitake ANDO, Toshihiko
SHAKOUCH, Hiroyuki YAMAMOTO and Koichi TSUJIMTO, Transaction of the Japan Society of MechanicalEngineers, 72-717 B, pp.1125-1130, 2006.

Gas-Liquid Two-Phase Oscillating Flow, Fluctuating Flow through Vertical Sudden Contraction Pipe, Alexandros
VOUTSINAS, Toshihiko SHAKOUCHI, Koichi TSUJIMOTO, and Toshitake ANDO, Transaction of the Japan
Society of Mechanical Engineers, 72-717 B, pp.1131-1136, 2006.

Flow Characteristics and Drag Reduction of Vertical Upward Gas-Liquid Two-Phase Flow through Sudden
Contraction Pipe, Alexandros VOUTSINAS, Toshihiko SHAKOUCHI, Koichi TSUJIMOTO and Toshitake ANDO,
Transaction of the Japan Society of Mechanical Engineers, 72-720 B, pp.1888-1894, 2006.

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Effect of Throat Surface Roughness on Jet Pump, Yukitaka YAMAZAKI, Tomonori NAKAYAMA, Tadashi
NARABAYASHI, Hidetoshi KOBAYASAHI and Toshihiko SHAKOUCHI, Transaction of the Japan Society of
Mechanical Engineers, 72-720 B, pp.1895-1900, 2006.

Flow Control of Turbulent Round Jet using a Resonance Nozzle, Toshhiko SHAKOUCHI, Journal of Aeronautics,
Astronautics and Aviation, Ser. A, 38-1, pp.1-9, 2006.

Behaviors of Particle Laden Jet Flow and Machining Characteristics of Micro-Blasting Process, Masaki SUGIMOTO,
Toshihiko SHAKOUCHI and Moriyasu IZAWA, Journal of the Japan Society for Abrasive Technology, 51-1,
pp.46-51, 2005.

Effect of Surface Roughness on Jet Pump Performance, Yukitaka YAMAZAKI, Tomonori NAKAYAMA, Tadashi
NARABAYASHI, Hidetoshi KOBAYASHI and Tishihiko SHAKOUCHI, JSME International Journal, Ser. B, 49-4,
pp.928-932, 2006.

Flow Characteristics and Control of Vertical Upward Gas-Liquid Two-Phase Flow through a Sudden Contraction Pipe,
Alexandros VOUTSINAS, Toshiiko SHAKOUCHI, Junichi TAKAMURA, Koichi TSUJIMOTO and Toshitake
ANDO, JSME International Journal, Ser. B, 49-4, pp.1000-1007, 2006.

Flow Analysis for Single and Multi-Nozzle Jet Pump, Tadashi NARABAYASHI, Yukitaka YAMAZAKI, Hidetoshi
KOBAYASHI and Toshihiko SHAKOUCHI, JSME International Journal, Ser. B, 49-4, pp.933-940, 2006.

Globular Formation of Fine Particle using a New High Temperature Air-Jet-Flow System, Hirokazu NAKAMURA
and Toshihiko SHAKOUCHI, Journal of Powder Technology, 166, pp.14-23, 2006.

Gas-Particle Two-Phase Jet Flow from Slot Nozzle and Micro-Blasting Process, Masaki SUGIMOTO, Toshihiko
SHAKOUCHI, Kohei HAYAKAWA and Moriyasu IZAWA, JSME International Journal, Ser. B, 49-3, pp.705-713,
2006.

Drag Reduction of Abrupt Expansion Pipe Flow, Toshitake ANDO, Toshihiko SHAKOUCHI, Hiroyuki
YAMAMOTO and Koichi TSUJIMOTO, Proc. of International Symposium on Advanced Fluid/Solid Science andTechnology in Experimental Mechanics, ISEM06-Sapporo, CD-ROM, 2006

Development of Rectangular Micro-blasting Nozzle, Masaki SUGIMOTO and Toshihiko SHAKOUCHI, Proc. ofInternational Conference on Precision Engineering, ICPE11-Tokyo, CD-ROM, 2006.

A―12

Analysis of turbulent structures of natural convection in a vertical channel by using DNS, Koichi TSUJIMOTO,
Naohiro Ohya, Toshihiko SHAKOUCHI and Toshitake ANDO, Transaction of the Japan Society of MechanicalEngineers, 72-719 B, pp.1666-1673, 2006.

Analysis of turbulent structures of natural convection in a vertical channel by using DNS , Koichi TSUJIMOTO,
Naohiro Ohya, Toshihiko SHAKOUCHI and Toshitake ANDO, Proc. Fifth International Symposium on
Turbulence Heat and Mass Transfer, CD-ROM, 2006.

Direct Numerical Simulation of Jet Mixing Control Using Combined Jets, Koichi TSUJIMOTO, Toshihiko
SHAKOUCHI, Shuji SASAZAKI and Toshitake ANDO, JSME International Journal, Ser. B, 49-4, pp.966-973,
2006.