New members（5 undergrads and 5 master's students）joined our lab.

Master's students and undergrads graduated.

Tanaami(B4) received the award in The Japan Society for Aeronautical and Space Sciences.
Ishida(B4) recieved the award in The Society of Instrument and Control Engineers.

Tanaka(M2), Someya(M1), Mase(M1), Uemura(M1) and Takebe(M1) attended the 31st The Japan Society of Mechanical Engineering Kanto Branch conference.

The paper was published in Additive Manufacturing.
Author: Ryo Takakuwa, Motoki Sakaguchi, Yuante Chin, Hiroaki Nakamoto, Manabu Noguchi, Hirotsugu Inoue
Title: Additive manufacturing of γ’ precipitate-strengthened nickel-based superalloy UNS N07001 by electron beam melting: Effects of post-heat treatment on microstructure and mechanical properties
Additive Manufacturing, (2025), Vol.100, 104690
URL: https://doi.org/10.1016/j.addma.2025.104690

The paper on the simulation of fluid droplet flow and solidification was introduced in Advances in Engineering.
Chao Kang, Ikki Ikeda, Motoki Sakaguchi,
Spreading dynamics associated with transient solidification of a paraffin droplet impacting a solid surface,
International Journal of Heat and Mass Transfer, Volume 228, 2024, 125672

Terui(M2) attended the 32nd symposium of NDE of Ultrasonic Testing.

Yang(D3), Takakuwa(D2), Tomizawa(D2), Sasakura(M2), Chen(M2), Peng(M2) and Someya(M1) attended APCFS2024(The 14th Asia-Pacific Conference on Fracture and Strength) in Matsue.

Sasakura(M2) received the Best Presentation award in the 62th Symposium on Strength of Materials at High Temperatures.

We are pleased to announce the arrival of a new associate young researcher, Ms. Li Mengjie.

Doctoral student graduated.

We went on a lab field trip to Tateyama.

The paper was published in Engineering Fracture Mechanics.
Author: Putt Thanakun, Itsuki Sasakura, Keita Mase, Motoki Sakaguchi
Title: Near-threshold fatigue crack propagation in a Ni-based single crystal superalloy affected by crystallographic anisotropy
Engineering Fracture Mechanics, (2024), Vol.309, 110411
URL: https://doi.org/10.1016/j.engfracmech.2024.110411

Mase(M1) received the Best Presentation award for Young Researcher in the 9th Young Symposium on Strength of Materials at High Temperatures.

Sasakura(M2) received the Best Presentation award in The Society of Materials Science, Japan.

Sasakura(M2) attended the 73th The Society of Materials Science, Japan conference.

The paper was published in International Journal of Heat and Mass Transfer.
Author: Chao Kang, Ikki Ikeda, Motoki Sakaguchi
Title: Spreading dynamics associated with transient solidification of a paraffin droplet impacting a solid surface
International Journal of Heat and Mass Transfer, (2024), Vol.228, 125672
URL: https://doi.org/10.1016/j.ijheatmasstransfer.2024.125672

New members（4 undergrads and 2 master's students）joined our lab.

Master's students and undergrads graduated.

Ikeda(M2) received the Best Presentation Award in the master's thesis presentation.
Sasakura(M1) received the Best Presentation Award in the master's thesis interim presentation.
Mase(B4) received the Best Presentation Award in the bachelor's thesis presentation by HAKUSEIKAI.

The paper was published in FFEMS.
Author: Motoki Sakaguchi, Yu Kurokawa, Fuminori Nakamura, Toru Hashimura
Title: Fatigue strength of steel–aluminum alloy dissimilar lap joints fabricated by dimple spot welding for automotive application
Fatigue & Fracture of Engineering Materials & Structures, (2024);1-13. doi:10.1111/ffe.14227
URL:https://onlinelibrary.wiley.com/doi/10.1111/ffe.14227

We went on a lab field trip to Hakkeijima Island.

Putt (D3) received the Best Student Presentation Award at FATIGUE 2022+1.

Prof. Inoue received Achievement Award of JSME, Mechanics of Materials Division.

Kato(M1) and Sasakura(M1) attended the Japan Society of Mechanical Engineers M&M 2023 Materials Mechanics Conference.

New members（2 master's students）joined our lab.

The paper was published in FFEMS.
Author: Motoki Sakaguchi, Putt Thanakun, Akira Koshio, Kosuke Tokihiro, Hirotsugu Inoue
Title: Temperature change and fatigue crack initiation associated with local cyclic slip deformation in a single crystal material
Fatigue & Fracture of Engineering Materials & Structures, (2023);1-13. doi:10.1111/ffe.14227
URL:https://onlinelibrary.wiley.com/doi/full/10.1111/ffe.14146

A paper on fatigue crack growth of Ni-based Superalloys was awarded from JSME Committee on Fatigue of Materials.
Author: Shiyu Suzuki, Motoki Sakaguchi, Masaya Domen, Takanori Karato, Kenta Suzuki
Title: Temperature and ΔK dependence of grain boundary effect on fatigue crack propagation in a two-dimensional polycrystalline Ni-base superalloy
Acta Materialia, Vol.240 (2022), 118288
URL:https://doi.org/10.1016/j.actamat.2022.118288

Ikeda(M2) attended the 72nd The Society of Materials Science, Japan conference.

New members（5 undergrads, 2 master's students, and 1 ph. D. student）joined our lab.

Master's students and undergrads graduated.

Ino(M2) received the Best Presentation Award in the master's thesis presentation.
Sasakura(B4) received the Mutou Eiji Prize in Japan Society for Design Engineering.

The paper in result of crystal plasticity assessment was published in Theoretical and Applied Fracture Mechanics.
Author：Xiaosheng Chen, Dianyin Hu, Motoki Sakaguchi
Title：Temperature dependent transition from Mode I to crystallographic cracking in a Ni-base single crystal superalloy
Theoretical and Applied Fracture Mechanics, (2023),Vol.124, 103795
URL: https://doi.org/10.1016/j.tafmec.2023.103795

The paper in result of thermal fluid simulation of droplet impact was published in Journal of Fluids and Structures.
Author：Chao Kang, Ikki Ikeda, Motoki Sakaguchi
Title：Recoil and solidification of a paraffin droplet impacted on a metal substrate: Numerical study and experimental verification
Journal of Fluids and Structures, (2023),Vol.118, 103839
URL: https://doi.org/10.1016/j.jfluidstructs.2023.103839

Putt(D2) attended APCFS2022(The 17th Asia-Pacific Conference on Fracture and Strength) in Australia.

Yamanaka(M2) received the Best Presentation award in the 60th Symposium on Strength of Materials at High Temperatures.

The paper in result of Okamoto's research was published in FFEMS.
This paper is the result of joint research with Mitsubishi Heavy Industries, Ltd.
Author：Motoki Sakaguchi, Ryota Okamoto, Takanori Karato, Kenta Suzuki
Title：Effect of rafted microstructure and its temperature dependency on fatigue crack propagation in a single-crystal Ni-base superalloy
Fatigue & Fracture of Engineering Materials & Structures, (2022);1‐13. doi:10.1111/ffe.13888
URL:https://onlinelibrary.wiley.com/doi/10.1111/ffe.13888

Koshio(M1) attended the 35th Symposium on Fatigue of the Japan Society of Materials Science.

Yang(D1)，Matsuoka(M2) and Yamanaka(M2) attended the Japan Society of Mechanical Engineers M&M 2022 Materials Mechanics Conference.

Suzuki's paper was published in Acta Materialia.
This paper is the result of joint research with Mitsubishi Heavy Industries, Ltd.
Auther：Shiyu Suzuki, Motoki Sakaguchi, Masaya Domen, Takanori Karato, Kenta Suzuki
Title：Temperature and ΔK dependence of grain boundary effect on fatigue crack propagation in a two-dimensional polycrystalline Ni-base superalloy
Acta Materialia, Vol.240 (2022), 118288
URL:https://doi.org/10.1016/j.actamat.2022.118288

Chiya(M2) and Koshio(M1) attended the 71st The Society of Materials Science, Japan conference.

Okamoto's paper was published in International Journal of Fatigue.
Author：Ryota Okamoto, Shiyu Suzuki, Motoki Sakaguchi, Hirotsugu
Title：Evolution of short-term creep strain field near fatigue crack in single crystal Ni-based superalloy measured by digital image correlation
International Journal of Fatigue, Vol. 162 (2022), 106952
URL:https://doi.org/10.1016/j.ijfatigue.2022.106952

New members（4 undergrads, and 1 master's student）joined our lab.

Doctoral student, master's students and undergrads graduated.

Okamoto(M2) received the Best Presentation Award in the master's thesis presentation and the Miura Prize in Japan Society of Mechanical Engineers.
Tokihiro(M2) received the award in Society of Automotive Engineers of Japan and achieved the best grade in Graduate Major in Mechanical Engineering and that was awarded by HAKUSEIKAI.
Ino(M1) received the Best Presentation Award in the master's thesis interim presentation.

Kang's paper was published in Results in Physics.
Author：Chao Kang, Motoki Sakaguchi, Akito Saito, Hirotsugu Inoue
Title：Adhesion strength of paraffin droplet impacted and solidified on metal substrate
Results in Physics, Vol. 34 (2022), 105310
URL:https://doi.org/10.1016/j.rinp.2022.105310

Okamoto（M2）and Tokihiro（M2）attended the 20th Symposium on Fracture Mechanics of Japan Society of Materials Science in Wakayama.

Suzuki（D3）received Best Presentation Award, First Prize in 8th International Conference on Creep, Fatigue & Creep-Fatigue Interaction (CF8).

Suzuki（D3），Okamoto（M2），Tokihiro（M2），Nakamura（M2）attended the Japan Society of Mechanical Engineers M&M 2021 Materials Mechanics Conference.

Suzuki（D3）attended Superalloys 2021.

Kang（D3）and Suzuki（D3）attended 8th International Conference on Creep, Fatigue & Creep-Fatigue Interaction (CF8) .

Nakamura's paper was published in Society of Automotive Engineers of Japan, Inc.
Author: Fuminori Nakamura, Motoki Sakaguchi, Toru Hashimura
Title:Fatigue Properties of Steel-aluminium Alloy Joint Fabricated by Dissmilar Joining Method DSW
Transactions of the Society of Automotive Engineers of Japan, Inc.,Vol.52,No.4, pp.899-904

Keisuke Suzuki(M2) received the Best Presentation award in The Society of Materials Science, Japan.

Shiyu Suzuki(D3)and Keisuke Suzuki(M2) attended the 70th The Society of Materials Science, Japan conference.

A paper on Crystal plasticity assessment was awarded from JSME Committee on Fatigue of Materials.
Title: Crystal plasticity assessment of crystallographic Stage I crack propagation in a Ni-based single crystal superalloy
Author: M.Sakaguchi, R.Komamura, X.Chen, M.Higaki, H.Inoue
International Journal of Fatigue, Vol. 123 (2019), pp.10-21

New members（4 undergrads, and 1 master's student）joined our lab.

Doctoral student, master's students and undergrads graduated.

Mogi and Okamoto received the Best Presentation Award in the master's thesis presentation and the master's thesis interim presentation, respectively.

A paper on fatigue crack growth of TiAl forged materials was published in Materials Science & Engineering A.
Motoki Sakaguchi, Yoshinori Niwa, Wenxiang Gong, Keisuke Suzuki, Hirotsugu Inoue,
Temperature dependent fatigue crack growth in forged TiAl alloys with nearly-lamellar and triplex microstructure,
Materials Science & Engineering A, Vol. 806 (2021), 140802

Suzuki and Kang attended the 58th Symposium on Strength of Materials at High Temperatures, and Suzuki got Best Presentation award.

Kang attended the 9th Global Conference on Materials Science and Engineering (CMSE 2020).

Tam attended the Asia-Pacific Conference on Fracture and Strength 2020 (APCFS2020) in Korea and received the Bronze Prize of the Student Paper Competition (Ph.D. Candidate category).

Okamoto attended the iDICs 2020 virtual conference (International Digital Image Correlation Society Virtual Conference 2020).

Chen's paper summarizing the results of crystal plasticity analysis was introduced in Advances in Engineering.
Xiaosheng Chen & Motoki Sakaguchi,
Transition behavior from Mode I cracking to crystallographic cracking in a Ni-base single crystal superalloy
International Journal of Fatigue, Vol. 132 (2020), 105400

An article about receiving the Japan Society of Mechanical Engineers Award (paper) was published in the Yomiuri Shimbun.

Kang's paper was published in Surface & Coatings Technology.
Chao Kang, Motoki Sakaguchi, Hirotsugu Inoue,
Contribution of creep to strain evolution in a paraffin droplet during and after rapid solidification on a metal substrate,
Surface & Coatings Technology, Vol. 399 (2020), 126145

Tam's paper was published in Mechanics of Materials.
Tam Hoai Le, Takumi Yoshikawa, Yu Kurokawa, Hirotsugu Inoue,
A quantitative study on temperature variation of rubber under steady state uniaxial tensile cyclic loading,
Mechanics of Materials, Vol. 148 (2020), 103523

New members（5 undergrads, and 3 master's students）joined our lab.

Our laboratory was awarded the 2019 Japan Society of Mechanical Engineers Award (paper).
Ayumi Amano, Motoki Sakaguchi, Yu Kurokawa, Yoshifumi Okajima, Hirotsugu Inoue,
Measurement of quenching strain in paraffin drop test modelling thermal spray process,
Transactions of the JSME, Vol. 83 No. 856(2017), pp.17-00377

Kang's paper summarizing the results of the paraffin dripping experiment was introduced in Advances in Engineering.
Chao Kang, Motoki Sakaguchi, Ayumi Amano, Yu Kurokawa, Hirotsugu Inoue,
Quenching stress and fracture of paraffin droplet during solidification and adhesion on metallic substrate,
Surface & Coatings Technology, Vol. 374 (2019), pp.868-877

S. Suzuki's paper was published in Scripta Materialia.
Shiyu Suzuki & Motoki Sakaguchi,
Fatigue crack retardation associated with creep deformation induced by a tension hold in a single crystal Ni-base superalloy
Scripta Materialia, Vol. 178 (2020), pp. 346-350

Kitahara and Okamoto attended the 57th High Temperature Strength Symposium in Tohoku University.

Chen's paper was published in Int J Fatigue.
Xiaosheng Chen & Motoki Sakaguchi,
Transition behavior from Mode I cracking to crystallographic cracking in a Ni-base single crystal superalloy
International Journal of Fatigue, Vol. 132 (2020), 105400

S. Suzuki attended the 19th Symposium on Fracture Mechanics of Japan Society of Materials Science in Fukushima and won the Best Presentation Award.

A. Saito attended the Japan Society of Mechanical Engineers M&M 2019 Materials Mechanics Conference in Kyushu University.

Chen and Kang, Gong attended the 10th Japan-China Bilateral Symposium on High Temperature Strength of Materials in Kagoshima.

S. Suzuki attended the Joint EPRI-123HiMAT Conference on Advances in High Temperature Materials.

S. Suzuki attended the ATEM 2019 (International Conference on Advanced Technology in Experimental Mechanics 2019).

S. Suzuki was selected as a JSPS Research Fellow (DC2).

We went on a lab trip to Chichibu.

S. Suzuki attended the Young symposium 2019 of Materials & Mechanics Division of Japan Society of Mechanical Engineers.

Kang's paper was published in Surface & Coatings Technology.
Chao Kang, Motoki Sakaguchi, Ayumi Amano, Yu Kurokawa, Hirotsugu Inoue,
Quenching stress and fracture of paraffin droplet during solidification and adhesion on metallic substrate,
Surface & Coatings Technology, Vol. 374 (2019), pp.868-877.

Okamoto and Tokihiro received the Hakuseikai Department of Mechanical Engineering Excellent Student Award.

Kang, Suzuki and Kitahara attended the 68th The Society of Materials Science, Japan conference.

New members（4 undergrads, and 2 master's students）joined our lab.

Master's students and undergrads graduated.

Suzuki received the Miura Prize in Japan Society of Mechanical Engineers.

Otsuka and Suzuki received the Best Presentation Award in Master's thesis presentation.

Mogi received the Mutou Eiji Prize in Japan Society for Design Engineering.

Suzuki attended the 123rd Committee in Japan Society for the Promotion of Science.

Higaki received the JSME Medal for Outstanding Paper
Title: Influences of crystal orientations and grain boundary on crack propagation behaviour at room temperature in a polycrystalline Ni-base superalloy
Author: Mana HIGAKI, Motoki SAKAGUCHI, Masafumi MATSUNAMI, Hideaki KANEKO, Takanori KARATO, Kenta SUZUKI, Hirotsugu INOUE
Transactions of the JSME, Vol. 84 No. 859, 17-00578

Kawaguchi attended the 26th symposium of NDE of Ultrasonic Testing, and got the budding award. Congratulations!

Matsunami and Saito attended 2018 M&M conference.

Suzuki and Niwa attended the 56th Symposium on High Strength of Material s at High Temperature in The Society of Materials Science.

Associate Professor Sakaguchi attended the Celebration of Honor of Officials.

Laboratories in 4 colleges jointly conducted a High Temperature Strength Study Group.

Otsuka and Suzuki attended the 123rd Committee in Japan Society for the Promotion of Science.

Chen, Suzuki and Kang attended The 15th Asia-Pacific Conference on Fracture and Strength in China

Suzuki attended the 34th Symposium on Fatigue in The Society of Materials Science.

Associate Professor Sakaguchi received Young Activity Prize in The Society of Materials Science, Japan Kanto Branch.

Research on the solidification and adhesion process of droplets was adopted as Mazda Research grant in The Mazda Foundation.

Tran graduated.

Otsuka's paper was published in Japan Society of Material Engineers.
Yuki OTSUKA, Motoki SAKAGUCHI, Yu KUROKAWA, Hirotsugu INOUE,
Strain field measurement around the crack tip in Ni-base superalloy using Digital Image Correlation,
Transactions of the JSME, Vol.84, No.865(2018),p18-00246.

Chen attended the conference of UKJEEL 2018（UK Japan Engineering Education League Workshop 2018 in Fukuoka.

Tran's paper was published in International Journal of Impact Engineering.
Hai Tran, Hirotsugu INOUE,
Development of wavelet deconvolution technique for impact force reconstruction: Application to reconstruction of impact force acting on a load-cell,
International Journal of Impact Engineering, Vol. 122 (2018), pp.137-147.

We went on a lab trip to Yugawara.

Suzuki attended Fatigue 2018 (12th International Fatigue Congress）in France.

Otsuka received the Best Presentation award in The Society of Materials Science, Japan.

Associate Professor Sakaguchi received Young Researcher's Award in The Society of Materials Science, Japan.

Otsuka, Matsunami and Kang attended The Japan Society of Mechanical Engineering Nagoya Branch conference.

Research on fracture mechanics of superalloy was published in the Yomiuri Shinbun.

Tran attended the conference of 2nd International Conference on Impact Loading of Structures and Materials - ICILSM 2018 in China.

Associate Professor Sakaguchi received The Young Scientists’ Prize in The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology.

Suzuki's Paper was published in Materials Science & Engineering A.
Shiyu SUZUKI, Motoki SAKAGUCHI, Hirotsugu INOUE,
Temperature dependent fatigue crack propagation in a single crystal Ni-base superalloy affected by primary and secondary orientations,
Materials Science & Engineering A, Vol. 724 (2018), pp.559-565.

New members（6 undergrads, and 2 master's students）joined our lab.

Doctoral student, master's students and undergrads graduated.

Amano received the award in Society of Automotive Engineers of Japan, and Higaki received the Miura Prize in Japan Society of Mechanical Engineers.

Higaki received the Best Presentation Award in Master's thesis presentation.

Higaki received the Best Grade Award in Mechanical Engineering Graduate Major.

Higaki's paper submitted in Japan Society of Material Engineers.

Kawai's paper was published in Japan Society of Mechanical Engineers.
Ryogo KAWAI, Yu KUROKAWA, Yousuke IRIE, and Hirotsugu INOUE,
A study on rapid evaluation on fatigue limit based on temperature variation (Source of the second harmonic of temperature variation),
Transactions of the JSME, Vol84, No.858(2018),p17-00462.

Suzuki went to the United States as a temporary exchange student.
Suzuki will conduct research on simulation of heat resistant materials in Georgia Institute of Technology.

Amano and Higaki attended the 55th Symposium on Strength of Materials at High Temeperature and Fracture Meshanics.
Amano and Higaki got Best Presentation award. Congrads!

Associate Professor Sakaguchi received the award of JSMS on High temperature Strength of Materials.

Amano and Higaki attend the conference of JSMAMS 2017 in China.

Amano's paper was submitted in Japan Society of Mechanical Engineers.

Amano got Best Presentation Award in 2017 M&M conference. Congrads!

Laboratories in 4 colleges jointly conducted a High Temperature Strength Study Group.

Kawai's paper was published in Mechanical Engineering Journal.
Ryogo KAWAI, Takumi YOSHIKAWA, Yu KUROKAWA, Yousuke IRIE, Hirotsugu INOUE, Rapid evaluation of fatigue limit using infrared thermography: comparison between two methods for quantifying temperature evolution, Mechanical　Engineering　Journal, Vol. 4 No. 5, 2017.

Seven members attended 2017 M&M conference.

International students came to our laboratory!

Tran attended the conference of The 64th National Congress of Theoretical and Applied Mechanics- NCTAM64.

We went on a lab trip to Shizuoka.

Associate Professor Sakaguchi got Challenging Reserch Award.
Detail is here, and pictures of Award ceremony is here.

Tran attended the conference of The 9th Regional Conference on Mechanical and Manufacturing Engineering (RCMME) in Laos.

Higaki and Suzuki attended the 66th The Japan Society of Mechanical Engineering Ngoya Branch conference.
Higaki got Best Presentation award. Congrads!

New members (5 undergrads and 2 master's students) joined our lab.

Higaki received the Best Presentation award in the interim presentation in Engineering course.

Komamura received the Best Presentation Award in Master's thesis presentation.

Associate Professor Sakaguchi received the Young Encouragement Prize in TokyoTech.

Harada and Kuwamura attended the 24th symposium of NDE of Ultrasonic Testing, and Kuwamura got the budding award. Congratulations!

Okajima's paper was published in Coating Technology.
Y. Okajima, M. Sakaguchi, H. Inoue A finite element assessment of influential factors in evaluating interfacial fracture toughness of thermal barrier coating, Surface & Coating Technology, Vol.313 (2017), pp.184-190

Aoki and Komamura attended the 54th Symposium on Strength of Materials at High Temperature.

Ishitobi, Komamura and Amano attended M&M2016 conference.

Niioka attended CMD2016 conference.

Kawai attended Asia-Pacific Conference on Fracture and Strength 2016.

Okajima attended 2016 M&M International Symposium for Young Researchers.

We went on a lab trip to Chiba.

New members (4 undergrads, and a doctoral student) joined our lab.

Zhang got Hatakeyama award from JSME, and Amano got Eiji Mutoh Excellent Student Award from JSDE. Congrads!

Kono and Ishitobi attended the 22nd The Japan Society of Mechanical Engineering Kanto Branch conference.

The students went skiing/snowboarding in Hakuba-Goryu, Nagano prefecture. They had a lot of fun and came back safely.

Noriko Miyagi stepped down as office assistant staff in favour of Mihoko Yamada.

Yokoguchi attended the 53rd Symposium on Strength of Materials at High Temperature and won the Best Presentation Award. Congraturations!

A new visiting doctoral student from Singapore joined our group. Welcome to Japan and our group!

A new doctoral student from Vietnam joined our group. We have got 2 Vietnamese students (and friends) in our office now! Welcome!

The professors and students went on a 2-day trip in Karuizawa, Nagano.

New members (4 undergrads, 2 master's students, and a doctoral student) joined our lab.

Niioka got Hatakeyama award from JSME. Congrads!

Kato and Sugino gave a presentation in the 22nd symposium of NDE of Ultrasonic Testing.
Kato got poster award.

Laboratory trip (Nagano）

New members joined to our Laboratory.

Laboratory trip (Atami)

The 21st Symposium on Ultrasonic Testing(Tokyo,Sugino)

The 51st Symposium on Strength of Materials at High Temperature(Nagasaki, Kouyama)

Laboratory trip (Kinugawa Spa and Tochigi）

M&M2013 (Gihu, Kawai and Yanagisawa）

Prof. Sakaguchi returned from Germany.

Plasticity 2013 (Bahamas, Prof. Sakaguchi, Invited lecture)

Superalloys 2012 (USA, Prof. Sakaguchi, Aural presentation）

Prof. Sakaguchi went to Germany as Humboldt-Foundation researcher.

Laboratory trip (Mt. Fuji & Yamanashi)

Prof. Sakaguchi was assigned to Inoue Lab. from Nagaoka University of Technology.