2024/05/13 更新

写真a

アルアスリ アブドゥルカリーム 
ALASLI Abdulkareem
ALASLI Abdulkareem
所属
大学院工学研究科 機械システム工学専攻 機械理工学 特任講師
職名
特任講師
連絡先
メールアドレス
外部リンク

学位 1

  1. Doctor of Engineering ( 2022年10月   Nagoya University ) 

研究キーワード 3

  1. 伝熱工学

  2. 熱物性計測

  3. 熱工学

現在の研究課題とSDGs 2

  1. Magnetic thermal management systems

  2. Advanced thermophysical properties measurement technology

所属学協会 8

  1. American Society of Mechanical Engineers (ASME)

  2. Institute of Electrical and Electronics Engineers (IEEE)

  3. American Association for the Advancement of Science (AAAS)

  4. The Japan Society of Applied Physics

  5. The Heat Transfer Society of Japan

  6. IEEE MEMS Technical Community

  7. International society for optics and photonics (SPIE)

  8. Australasian Fluid & Thermal Engineering Society

▼全件表示

 

論文 13

  1. Creation of flexible spin-caloritronic material with giant transverse thermoelectric conversion by nanostructure engineering 査読有り

    Gautam, R; Hirai, T; Alasli, A; Nagano, H; Ohkubo, T; Uchida, KI; Sepehri-Amin, H

    NATURE COMMUNICATIONS   15 巻 ( 1 ) 頁: 2184   2024年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Nature Communications  

    Functional materials such as magnetic, thermoelectric, and battery materials have been revolutionized through nanostructure engineering. However, spin caloritronics, an advancing field based on spintronics and thermoelectrics with fundamental physics studies, has focused only on uniform materials without complex microstructures. Here, we show how nanostructure engineering enables transforming simple magnetic alloys into spin-caloritronic materials displaying significantly large transverse thermoelectric conversion properties. The anomalous Nernst effect, a promising transverse thermoelectric phenomenon for energy harvesting and heat sensing, has been challenging to utilize due to the scarcity of materials with large anomalous Nernst coefficients. We demonstrate a remarkable ~ 70% improvement in the anomalous Nernst coefficients (reaching ~ 3.7 µVK−1) and a significant ~ 200% enhancement in the power factor (reaching ~ 7.7 µWm−1K−2) in flexible Fe-based amorphous materials by nanostructure engineering without changing their composition. This surpasses all reported amorphous alloys and is comparable to single crystals showing large anomalous Nernst effect. The enhancement is attributed to Cu nano-clustering, facilitating efficient transverse thermoelectric conversion. This discovery advances the materials science of spin caloritronics, opening new avenues for designing high-performance transverse thermoelectric devices for practical applications.

    DOI: 10.1038/s41467-024-46475-6

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  2. Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples 査読有り

    Nakamura, T; Matsumoto, M; Amano, K; Enokido, Y; Zolensky, ME; Mikouchi, T; Genda, H; Tanaka, S; Zolotov, MY; Kurosawa, K; Wakita, S; Hyodo, R; Nagano, H; Nakashima, D; Takahashi, Y; Fujioka, Y; Kikuiri, M; Kagawa, E; Matsuoka, M; Brearley, AJ; Tsuchiyama, A; Uesugi, M; Matsuno, J; Kimura, Y; Sato, M; Milliken, RE; Tatsumi, E; Sugita, S; Hiroi, T; Kitazato, K; Brownlee, D; Joswiak, DJ; Takahashi, M; Ninomiya, K; Takahashi, T; Osawa, T; Terada, K; Brenker, FE; Tkalcec, BJ; Vincze, L; Brunetto, R; Aléon-Toppani, A; Chan, QHS; Roskosz, M; Viennet, JC; Beck, P; Alp, EE; Michikami, T; Nagaashi, Y; Tsuji, T; Ino, Y; Martinez, J; Han, J; Dolocan, A; Bodnar, RJ; Tanaka, M; Yoshida, H; Sugiyama, K; King, AJ; Fukushi, K; Suga, H; Yamashita, S; Kawai, T; Inoue, K; Nakato, A; Noguchi, T; Vilas, F; Hendrix, AR; Jaramillo-Correa, C; Domingue, DL; Dominguez, G; Gainsforth, Z; Engrand, C; Duprat, J; Russell, SS; Bonato, E; Ma, C; Kawamoto, T; Wada, T; Watanabe, S; Endo, R; Enju, S; Riu, L; Rubino, S; Tack, P; Takeshita, S; Takeichi, Y; Takeuchi, A; Takigawa, A; Takir, D; Tanigaki, T; Taniguchi, A; Tsukamoto, K; Yagi, T; Yamada, S; Yamamoto, K; Yamashita, Y; Yasutake, M; Uesugi, K; Umegaki, I; Chiu, I; Ishizaki, T; Okumura, S; Palomba, E; Pilorget, C; Potin, SM; Alasli, A; Anada, S; Araki, Y; Sakatani, N; Schultz, C; Sekizawa, O; Sitzman, SD; Sugiura, K; Sun, M; Dartois, E; De Pauw, E; Dionnet, Z; Djouadi, Z; Falkenberg, G; Fujita, R; Fukuma, T; Gearba, IR; Hagiya, K; Hu, MY; Kato, T; Kawamura, T; Kimura, M; Kubo, MK; Langenhorst, F; Lantz, C; Lavina, B; Lindner, M; Zhao, J; Vekemans, B; Baklouti, D; Bazi, B; Borondics, F; Nagasawa, S; Nishiyama, G; Nitta, K; Mathurin, J; Matsumoto, T; Mitsukawa, I; Miura, H; Miyake, A; Miyake, Y; Yurimoto, H; Okazaki, R; Yabuta, H; Naraoka, H; Sakamoto, K; Tachibana, S; Connolly, HC Jr; Lauretta, DS; Yoshitake, M; Yoshikawa, M; Yoshikawa, K; Yoshihara, K; Yokota, Y; Yogata, K; Yano, H; Yamamoto, Y; Yamamoto, D; Yamada, M; Yamada, T; Yada, T; Wada, K; Usui, T; Tsukizaki, R; Terui, F; Takeuchi, H; Takei, Y; Iwamae, A; Soejima, H; Shirai, K; Shimaki, Y; Senshu, H; Sawada, H; Saiki, T; Ozaki, M; Ono, G; Okada, T; Ogawa, N; Ogawa, K; Noguchi, R; Noda, H; Nishimura, M; Namiki, N; Nakazawa, S; Morota, T; Miyazaki, A; Miura, A; Mimasu, Y; Matsumoto, K; Kumagai, K; Kouyama, T; Kikuchi, S; Kawahara, K; Kameda, S; Iwata, T; Ishihara, Y; Ishiguro, M; Ikeda, H; Hosoda, S; Honda, R; Honda, C; Hitomi, Y; Hirata, N; Hayashi, T; Hayakawa, M; Hatakeda, K; Furuya, S; Fukai, R; Fujii, A; Cho, Y; Arakawa, M; Abe, M; Watanabe, S; Tsuda, Y

    SCIENCE   379 巻 ( 6634 ) 頁: 787 - +   2023年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Science  

    Samples of the carbonaceous asteroid Ryugu were brought to Earth by the Hayabusa2 spacecraft. We analyzed 17 Ryugu samples measuring 1 to 8 millimeters. Carbon dioxide-bearing water inclusions are present within a pyrrhotite crystal, indicating that Ryugu's parent asteroid formed in the outer Solar System. The samples contain low abundances of materials that formed at high temperatures, such as chondrules and calcium- and aluminum-rich inclusions. The samples are rich in phyllosilicates and carbonates, which formed through aqueous alteration reactions at low temperature, high pH, and water/rock ratios of <1 (by mass). Less altered fragments contain olivine, pyroxene, amorphous silicates, calcite, and phosphide. Numerical simulations, based on the mineralogical and physical properties of the samples, indicate that Ryugu's parent body formed ~2 million years after the beginning of Solar System formation.

    DOI: 10.1126/science.abn8671

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  3. FLEXIBLE LOOP HEAT PIPE DRIVEN BY MICROPILLARS FOR WEARABLE DEVICES

    Nomura, R; Hashimoto, M; Kawakami, T; Alasli, A; Nagano, H; Ueno, A

    2024 IEEE 37TH INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS, MEMS     頁: 1194 - 1197   2024年

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    掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)  

    This work reports on a flexible thermal transport MEMS device driven by the capillary force of micropillars. In particular, it aims to enhance the device performance by improving liquid and gas sealing properties while introducing a quantitative method to evaluate thermal performance in bended positions. In the improved design, capillary force generated at micropillars are employed in the flexible evaporator as micropumps to drive the working fluid. The use of Parylene, paraxylene-based polymer, in the fabrication process improves sealing properties, enhancing overall device performance. A heat load test in the curved posture was performed, and heat transport performance of 3.0 W was demonstrated.

    DOI: 10.1109/MEMS58180.2024.10439364

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  4. Design and Fabrication of a Micropillar-Pumped Polymer Loop Heat Pipe 査読有り

    Hashimoto, M; Kawakami, T; Alasli, A; Nomura, R; Nagano, H; Ueno, A

    JOURNAL OF MICROELECTROMECHANICAL SYSTEMS   32 巻 ( 6 ) 頁: 519 - 521   2023年12月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Microelectromechanical Systems  

    This letter presents a micropillar-pumped polymer loop heat pipe (LHP) with potential applications in flexible electronics. A unique evaporator with a micro pillar wick was designed for a flexible polymer LHP. The polymer LHP was fabricated via simple and cost-effective soft lithography, omitting the need for a porous wick. This design and fabrication approach facilitated passive two-phase cooling in the polymer LHP, with up to 34 °C reduction in evaporator temperature when compared to a non-fluid-charged state in a horizontal orientation. [2023-0140]

    DOI: 10.1109/JMEMS.2023.3318413

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  5. Measurement of Microscopic Thermal Diffusivity Distribution for Ryugu Sample by Infrared Lock-in Periodic Heating Method 査読有り

    Ishizaki, T; Nagano, H; Tanaka, S; Sakatani, N; Nakamura, T; Okada, T; Fujita, R; Alasli, A; Morita, T; Kikuiri, M; Amano, K; Kagawa, E; Yurimoto, H; Noguchi, T; Okazaki, R; Yabuta, H; Naraoka, H; Sakamoto, K; Tachibana, S; Watanabe, SI; Tsuda, Y

    INTERNATIONAL JOURNAL OF THERMOPHYSICS   44 巻 ( 4 )   2023年4月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:International Journal of Thermophysics  

    The thermophysical properties of small Solar System bodies are essential to be determined, on which the thermal evolution of small bodies largely depends. The carbonaceous asteroid Ryugu is one of the small undifferentiated bodies formed in the early Solar System. Hayabusa2 explored the asteroid Ryugu and returned the surface samples in 2020 for detailed on-ground investigation, including measurements of thermal properties. Because the available sample amount was limited, this study developed a novel method to measure the thermal diffusivity of small and irregularly shaped samples of about 1 mm in diameter by combining lock-in thermography and periodic heating methods on the microscale. This method enables us to measure the thermal diffusivity of both flat-plate and granular shape samples by selecting the suitable detecting direction of the temperature response. Especially, when the sample has a flat-plate shape, the anisotropic distribution of the in-plane thermal diffusivity can be evaluated. This method was applied to six Ryugu samples, and the detailed anisotropic distribution of the thermal diffusivity was obtained. The measurement results showed that the samples show local thermal anisotropy caused by cracks and voids. The average thermal diffusivity among all samples was (2.8 to 5.8) × 10−7 m2·s. Based on the density and specific heat of the samples obtained independently, the thermal effusivity was estimated to be 791 J·(s1/2·m2·K) to 1253 J·(s1/2·m2·K), which is defined as the resistance of surface temperature to the change of thermal input. The determined thermal effusivity, often called thermal inertia in planetary science, is larger than the observed value of 225 ± 45 J· (s1/2·m2·K) of the asteroid Ryugu's surface, obtained from the diurnal temperature change of the rotating asteroid by a thermal infrared camera onboard Hayabuas2. This difference is likely to be attributed to the difference in the analytical scale between the sample and the surface boulders compared with the thermal diffusion length. Consequently, it was found that the present result is more representative of the thermal diffusivity and thermal inertia of local part of individual Ryugu particles.

    DOI: 10.1007/s10765-023-03158-6

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  6. Thermophysical Properties Mapping of Composites by Lock-in Thermography: Applications on Carbon Fiber Reinforced Plastics 査読有り

    Alasli, A; Fujita, R; Nagano, H

    INTERNATIONAL JOURNAL OF THERMOPHYSICS   43 巻 ( 12 )   2022年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:International Journal of Thermophysics  

    We propose a versatile method for measuring the thermophysical properties of composites by means of lock-in thermography (LIT) technique. The method is based on analyzing the thermal response distribution induced by periodic laser heating, which enables simultaneous high-spatial-resolution mapping of the effective out-of-plane thermal diffusivity, thermal conductivity, and volumetric heat capacity over the surface of the material. We validate the method using a reference material and demonstrate its capability in visualizing the effective properties of laminated carbon fiber reinforced plastic and carbon fiber reinforced thermoplastic with discontinuous fibers. The results showed that the LIT-based approach has high reproducibility and sensitivity, which allows observing the effect of fiber orientations on the effective properties. The proposed method will be useful for thermal research in composites, defect detection, and for investigating component geometric arrangement effects on the thermophysical properties.

    DOI: 10.1007/s10765-022-03109-7

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  7. Measurements of thermoelectric figure of merit based on multi-harmonic thermal analysis of thermographic images 査読有り

    Alasli, A; Hirai, T; Nagano, H; Uchida, KI

    APPLIED PHYSICS LETTERS   121 巻 ( 15 )   2022年10月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Applied Physics Letters  

    We demonstrate a versatile measurement method for the thermoelectric figure of merit and related transport properties by means of a multi-harmonic thermal analysis of a thermographic movie. The method is based on the thermal analyses of the charge-current-induced temperature distribution generated by the Peltier effect at the first harmonic and by Joule heating at the second harmonic, measured with an infrared camera. This allows simultaneous estimation of the thermal diffusivity, thermal conductivity, volumetric heat capacity, and Peltier/Seebeck coefficient of conductors without attaching an external heater. The thermal analysis developed here is applicable to a system with the interfacial thermal resistance between the target conductor and reference material. Our method enables the measurements while applying an external magnetic field, opening the way for investigating the magnetic field and/or magnetization dependences of the figures of merit and associated properties for the magneto-thermoelectric effects. We demonstrate the usability of this method by estimating the figures of merit for the Peltier/Seebeck, magneto-Peltier/Seebeck, and Ettingshausen/Nernst effects in a Bi-Sb alloy as a promising material for thermoelectric applications. The multi-harmonic thermal analysis method will, thus, aid in developing highly efficient thermoelectric materials and further investigations of magneto-thermal and magneto-thermoelectric transport properties.

    DOI: 10.1063/5.0105282

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  8. Dynamical electromagnetic actuation system for microscale manipulation 査読有り

    Çetin, L; Alasli, A; Akçura, N; Kahveci, A; Can, FC; Tamer, Ö

    ROBOTICA   40 巻 ( 10 ) 頁: 3586 - 3603   2022年10月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Robotica  

    Electromagnetic actuation systems (EMA) have excelled themselves in microscale manipulation. Yet, the fastened structure of the current systems tethers the controlled workspace. In this paper, a new electromagnetic actuation principle is investigated. The actuator structure consists of a pair of coaxially movable electromagnets integrated to a robotic manipulator. The pair induces a coaxial homogeneous magnetic field or gradient to control the magnitude of the magnetic torque or force by changing the distance between the electromagnets asymmetrically. The robotic manipulator, on the other hand, transports the pair at five degrees of freedom to manipulate a microrobot in 3D space by closed-loop control with integrated vision feedback system. Numerical analyses are performed to investigate the induced electromagnetic field at the symmetrical/asymmetrical configuration of the coaxial pair. Accordingly, a correlation between the magnitude of the magnetic force and the asymmetric distance is obtained for flexible force control. A proof of concept prototype is constructed to validate the proposed actuation principle and evaluate its performance experimentally. The experimental results verify the numerical analysis and show the system applicability of inducing controlled forces on a micro-object in 2D and 3D workspaces at a velocity range of 65 to 157 μm/s. Moreover, micromanipulation on a helical route is also demonstrated with an absolute error mean from the reference path of 191 μm.

    DOI: 10.1017/S0263574722000418

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  9. DESIGN AND FABRICATION OF FLEXIBLE TWO-PHASE BEAT TRANSPORT DEVICE FOR WEARABLE INTERFACES 査読有り

    Sugimoto, K; Alasli, A; Ueno, A; Nagano, H

    2021 34TH IEEE INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS (MEMS 2021)   2021-January 巻   頁: 95 - 98   2021年

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    掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)  

    The recent development of wearable interfaces raises the challenge of their thermal management requirements. Motivated by that, a novel flexible loop heat pipe (FLHP) of high heat transfer efficiency to be mounted on wearable devices is presented. Initially, the design of the FLHP is caried out by a constructed thermal analysis model. The FLHP is then formed from PDMS by a developed microfabrication process. A proof of concept FLHP prototype with dimension of 80×45×1.2 mm with high flexibility is obtained. The thermal performance test was conducted at three different heat loads. The results show the FLHP operates successfully with promising potential to be applied on wearable electronics or any other flexible MEMS applications.

    DOI: 10.1109/MEMS51782.2021.9375378

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  10. Electromagnet design for untethered actuation system mounted on robotic manipulator 査読有り

    Alasli A., Çetin L., Akçura N., Kahveci A., Can F., Tamer Ö.

    Sensors and Actuators, A: Physical   285 巻   頁: 550 - 565   2019年

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    担当区分:筆頭著者   記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Sensors and Actuators, A: Physical  

    Electromagnetic actuation systems have remarkably proved themselves in the field of contactless power transmission systems. Nevertheless, the stationary position of the operated electromagnets or their rotation around a fixed axis resulted in a restrictive and limited versatile workspace. In this paper, a new design of a steel cored solenoidal coil is proposed for a novel microrobot electromagnetic actuator. The new system combines a 6 DOF industrial robotic manipulator with co-axially movable electromagnets. Considering the maximum weight and workspace limitations of the robotic manipulator, seven essential dimensions of the electromagnet were investigated with the aid of a simulation software. A set of parametric studies were carried out in order to optimize the homogeneity of the induced magnetic field at the highest achievable intensity based on Ad hoc method. The results showed that an electromagnet with a square prism core and a large front, induces a more homogeneous and intense magnetic field. Moreover, by shortening the length of the coil and increasing the length of the core, the intensity of the magnetic field significantly increases without much affecting its homogeneity. The electromagnet was fabricated according to the final result of the numerical studies and evaluated by performing experimental measurements on the induced magnetic field. Furthermore, with several programed motions, the performance of the proposed untethered electromagnetic actuation system was demonstrated experimentally.

    DOI: 10.1016/j.sna.2018.11.027

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  11. Close-Loop Control of Microrobot Within a Constrained Environment Using Electromagnet Pairs

    Akçura, N; Kahveci, A; Çetin, L; Alasli, A; Can, FC; Gezgin, E; Tamer, Ö

    INTERACTIVE COLLABORATIVE ROBOTICS (ICR 2019)   11659 巻   頁: 1 - 9   2019年

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    掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)  

    This paper describes a macro/micro robot manipulation system consisting of an electromagnet couple and an industrial manipulator. The system has capability of motion 6 Degrees of Freedom (6 DOF) providing the same amount of DOFs to the manipulation of the microrobot. A custom-design mechanism which is attached onto the tip of the industrial manipulator provides the required magnetic field profiles for force and torque generation using coil couple and their ability sliding motion in linear directions. This combination provides reprogrammable working space for the microrobot manipulation. Robot Operating System (ROS) based programming integrates all the subsystem software. Visual feedback assures the real-time microrobot position and orientation data. Close-loop motion control of the microrobot was tested using custom designed constrained paths take part in a plane. Experiment were presented for specific motions of the microrobot to show the microrobot motion abilities. The results are promising which may orient to the applications like micro assembly and micromanipulation.

    DOI: 10.1007/978-3-030-26118-4_1

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  12. Re-dispersion ability of multi wall carbon nanotubes within low viscous mineral oil 査読有り

    Alasli A., Evgin T., Turgut A.

    Colloids and Surfaces A: Physicochemical and Engineering Aspects   538 巻   頁: 219 - 228   2018年

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    担当区分:筆頭著者   記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Colloids and Surfaces A: Physicochemical and Engineering Aspects  

    The main purpose of this study is to focus the light for the first time on the recognized re-dispersion ability of the sonicated MWCNTs within low viscous mineral oil. For that, pure MWCNTs, without any special treatment, were dispersed in mineral oil by sonication without using any stabilization method. After full agglomeration, it was realized that agitating, shaking or even blowing compressed air on the agglomerated nanolubricant is able to break down the aggregation of the MWCNTs. Microscopic video is presented to clarify the behavior of the tubes during the re-dispersion process. Quantitatively, particle size distribution (PSD) was employed to evaluate the re-dispersion quality. The viscosity and thermal conductivity of both recently sonicated and re-dispersed samples were also investigated with accurate measurement setups at four different weight concentrations (0.05, 0.1, 0.2 and 0.3 wt.%). It was observed that the sonicated MWCNTs are separated, saturated, lubricated, and surrounded by oil layers, which not only ease its motion within the lubrication oil, but also give them the ability of detaching by applying any slight force. Moreover, the PSD results with the equal values of the viscosity and thermal conductivity, obtained within the uncertainty of the measurements, confirm that the MWCNTs were re-dispersed to the same quality of the recently sonicated ones by just shaking.

    DOI: 10.1016/j.colsurfa.2017.10.085

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  13. Evaluating the thermal conductivity and viscosity of Cuo-nanolubricants 査読有り

    Koruk M., Turgut A., Alasli A.

    Key Engineering Materials   750 KEM 巻   頁: 159 - 163   2017年

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Key Engineering Materials  

    In the presented work, thermal conductivity of CuO and its viscosity at three different weight concentrations were investigated. A two-steps method was deployed in order to sonicate successfully CuO nanolubricants samples at three different weight concentrations (0.2, 0.5, & 1 wt%). The measurements of thermal conductivity were carried out with a lab-made measurement set, which is based on a 3method. The obtained enhancements were 1%, 1.7% and 2.8% for 0.2, 0.5, and 1 wt.%, respectively. Viscosity was also investigated under different temperatures and it was obtained that adding CuO to the mineral oil had a slight effect on its viscosity at lower concentrations. However, the maximum increment at lower temperature for the higher concentration was 13.1%. Based on the enhancement in thermal conductivity and the low increment in viscosity, CuO nanolubricant can be recommended for enhancing the heat transfer characteristic of the refrigeration compressor.

    DOI: 10.4028/www.scientific.net/KEM.750.159

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MISC 10

  1. Quantification of early-stage fatigue damage on cross-ply CFRP laminates by lock-in thermographic thermal diffusivity measurement

    Fujita, R; Alasli, A; Yokozeki, T; Nagano, H  

    THERMOSENSE: THERMAL INFRARED APPLICATIONS XLIV12109 巻   2022年

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    記述言語:英語   出版者・発行元:Proceedings of SPIE - The International Society for Optical Engineering  

    In this paper, thermal diffusivity measurements using a lock-in thermography based on the laser-periodic-heating method was used to quantify the micro-scale damage that occurred in the early-stage of fatigue. Measurement system using square-core optical fiber with a mode mixing was developed to ensure heating uniformity and enlarge the measurement area. A developed model was fitted to the frequency dependence of phase delay, which was corresponded to a time delay from the input periodical laser heating, to obtain the thermal diffusivity. Cross-ply CFRP laminates were prepared for fatigue tests and thermal diffusivity measurement. Two type of tensile fatigue load applied sinusoidally at maximum loads of 30% and 50% of static tensile strength, respectively. Fatigue load cycle reached to 105 times. Post-fatigue sample were confirmed by X-ray CT that there was no clack growth inside the sample. The results showed that the thermal diffusivity of the post-fatigue sample decreased by up to 3.1% compared to the unloaded sample. This result indicate that thermal diffusivity measurement has possibility to quantitate the early-stage fatigue damage. However, further experiment was needed to extract only the fatigue loading effect, since this result includes differences in the initial state before fatigue loading.

    DOI: 10.1117/12.2623172

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  2. MEMS微細加工を利用したフレキシブルループヒートパイプの研究

    上野藍, 川上大河, 橋本将明, ALASLI Abdulkareem, 長野方星  

    日本伝熱シンポジウム講演論文集(CD-ROM)59th 巻   2022年

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  3. 初期分析によるリュウグウ粒子の熱拡散率と熱慣性

    石崎拓也, 長野方星, 田中智, 坂谷尚哉, 中村智樹, 藤田涼平, ALASLI Abdulkareem, 岡田達明, 森田朋代, 菊入瑞葉, 天野香菜, 加川瑛一, 圦本尚義, 野口高明, 岡崎隆司, 薮田ひかる, 奈良岡浩, 坂本佳奈子, 橘省吾, 橘省吾, 渡邊誠一郎, 津田雄一  

    日本惑星科学会秋季講演会予稿集(Web)2022 巻   2022年

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  4. ロックインサーモグラフィ式周期加熱法によるリュウグウ粒子の熱拡散率の方向依存性分布計測

    石崎拓也, 長野方星, 田中智, 坂谷尚哉, 中村智樹, 藤田涼平, ALASLI Abdulkareem, 森田朋代, 菊入瑞葉, 天野香菜, 加川瑛一, 圦本尚義, 野口高明, 岡崎隆司, 薮田ひかる, 奈良岡浩, 坂本佳奈子, 橘省吾, 橘省吾, 渡邊誠一郎, 津田雄一  

    Thermophysical Properties (CD-ROM)43rd 巻   2022年

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  5. ROS Implementation for Untethered Microrobot Manipulation

    Kahveci A., Akçura N., Çetin L., Alasli A., Tamer Ö.  

    Studies in Computational Intelligence895 巻   頁: 269 - 293   2021年

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    出版者・発行元:Studies in Computational Intelligence  

    In this section, a ROS implementation of a system which is utilized for untethered microrobot manipulation is introduced. Untethered microrobot locomotion is an area that is studied globally and magnetic actuation is one of the proven methods for microrobot locomotion. Several types of actuator systems were approved by successful works and became associates in the literature works. These locomotion strategies require real-time and closed-loop control for most of the applications. We developed a custom actuation system using a coaxially aligned electromagnet couple, providing magnetic field for locomotion and the actuator structure was carried by an industrial manipulator, KUKA robot. So that, the complexity of electromagnet current control is divided into simpler sub parts that involve mechanical translation and rotation motions. This structure principle provides the capability of a larger task space. KUKA manipulator and electromagnetic actuator (EMA) as its end-effector form the main system structure. Also, visual feedback is provided by camera systems. Some tasks were distributed to peripheral NVIDIA Jetson TK1 Embedded Development Kits. Here, we focus on the integration of ROS into a microrobot manipulation or alike systems. System components, integration, control, test phases and detailed ROS components are described, an application with the results is presented.

    DOI: 10.1007/978-3-030-45956-7_9

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  6. DESIGN AND FABRICATION OF FLEXIBLE TWO-PHASE BEAT TRANSPORT DEVICE FOR WEARABLE INTERFACES

    Sugimoto Kenya, Alasli Abdulkareem, Ueno Ai, Nagano Hosei  

    2021 34TH IEEE INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS (MEMS 2021)2021-January 巻   頁: 95 - 98   2021年

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    記述言語:英語   掲載種別:研究発表ペーパー・要旨(国際会議)   出版者・発行元:Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)  

    The recent development of wearable interfaces raises the challenge of their thermal management requirements. Motivated by that, a novel flexible loop heat pipe (FLHP) of high heat transfer efficiency to be mounted on wearable devices is presented. Initially, the design of the FLHP is caried out by a constructed thermal analysis model. The FLHP is then formed from PDMS by a developed microfabrication process. A proof of concept FLHP prototype with dimension of 80×45×1.2 mm with high flexibility is obtained. The thermal performance test was conducted at three different heat loads. The results show the FLHP operates successfully with promising potential to be applied on wearable electronics or any other flexible MEMS applications.

    DOI: 10.1109/MEMS51782.2021.9375378

    Web of Science

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  7. ウェアラブル機器搭載を目指したフレキシブルループヒートパイプの研究-設計および試作評価-

    上野藍, ALASLI Abdulkareem, 杉本賢哉, 長野方星  

    日本伝熱シンポジウム講演論文集(CD-ROM)58th 巻   2021年

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  8. Close-Loop Control of Microrobot Within a Constrained Environment Using Electromagnet Pairs

    Akcura Nail, Kahveci Aytac, Cetin Levent, Alasli Abdulkareem, Can Fatih Cemal, Gezgin Erkin, Tamer Ozgur  

    INTERACTIVE COLLABORATIVE ROBOTICS (ICR 2019)11659 巻   頁: 1 - 9   2019年

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    記述言語:英語   掲載種別:研究発表ペーパー・要旨(国際会議)   出版者・発行元:Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)  

    This paper describes a macro/micro robot manipulation system consisting of an electromagnet couple and an industrial manipulator. The system has capability of motion 6 Degrees of Freedom (6 DOF) providing the same amount of DOFs to the manipulation of the microrobot. A custom-design mechanism which is attached onto the tip of the industrial manipulator provides the required magnetic field profiles for force and torque generation using coil couple and their ability sliding motion in linear directions. This combination provides reprogrammable working space for the microrobot manipulation. Robot Operating System (ROS) based programming integrates all the subsystem software. Visual feedback assures the real-time microrobot position and orientation data. Close-loop motion control of the microrobot was tested using custom designed constrained paths take part in a plane. Experiment were presented for specific motions of the microrobot to show the microrobot motion abilities. The results are promising which may orient to the applications like micro assembly and micromanipulation.

    DOI: 10.1007/978-3-030-26118-4_1

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  9. Guided motion control methodology for microrobots

    Akcura N., Cetin L., Kahveci A., Alasli A.K., Cemal Can F., Tamer O.  

    2018 6th International Conference on Control Engineering and Information Technology, CEIT 2018   2018年10月

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    記述言語:英語   掲載種別:研究発表ペーパー・要旨(国際会議)   出版者・発行元:2018 6th International Conference on Control Engineering and Information Technology, CEIT 2018  

    A guided microrobot position control methodology is introduced in this paper. Using an electromagnetic actuator (EMA) as an end-effector of a robot manipulator, it is possible to have microrobot follow a correlated path with robot manipulator motion in case when there is no task space feedback from microrobot environment. For this purpose, a concept EMA system with an actuation principle depending on the magnetic field homogeneity and gradient generated by two coaxially aligned electromagnets is introduced. The functionality of developed system is experimentally analyzed for translational and rotational motion tracking cases. It is observed that the correlation between the robot manipulator motion and microrobot motion is nearly 1 in x and y direction.

    DOI: 10.1109/CEIT.2018.8751803

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  10. Effect of the coil shape on magnetic field of an electromagnet for contactless power transmission to microrobots

    Alasli A., Akçura N., Çetin L.  

    Mechanisms and Machine Science52 巻   頁: 240 - 248   2018年

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    記述言語:英語   掲載種別:研究発表ペーパー・要旨(国際会議)   出版者・発行元:Mechanisms and Machine Science  

    This paper proposes a comparative study in order to investigate the effect of the coil geometry on the intensity and homogeneity of the magnetic field. For this purpose, a solenoid with rectangular prism core and two different coil shapes, cylindrical and cuboid, was modeled. Several finite element numerical studies at different structural design parameters combinations for two different distances between the coils were carried out. The obtained results were evaluated according to the flux intensity and the homogeneity at the center region between the coils. Consequently, it was found that cylindrical coils generate higher flux intensity with more homogeneous magnetic field.

    DOI: 10.1007/978-3-319-60702-3_25

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▼全件表示

科研費 1

  1. Advancing active magnetic refrigeration with magnetocaloric hybrid nanofluid

    研究課題/研究課題番号:23K19097  2023年8月 - 2025年3月

    科学研究費助成事業  研究活動スタート支援

    ALASLI ABDULKAREEM

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    Magnetic refrigeration is eco-friendly cooling technology based on magnetocaloric effect. The research aims to enhance the technology by dispersing magnetocaloric nanoparticles in hybrid nanofluids, aiming for simpler, more efficient, and compact system. This has the potential to enable green cooling applications, while advancing our understanding of nanoparticles thermal behavior in fluids.

産業財産権 1

  1. 熱電変換特性評価方法、熱電変換特性解析装置及び解析プログラム、並びに熱電変換特性評価システム

    内田 健一, 三浦 飛鳥, 長野 方星, アルアスリ アブドゥルカリーム

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    出願人:国立研究開発法人物質・材料研究機構

    出願番号:特願2020-215996  出願日:2020年12月

    公開番号:特開2022-101744  公開日:2022年7月

    J-GLOBAL

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