Prof. Yasubumi Furuya Profile

Prof. Yasubumi Furuya

Professor at Hirosaki Univ

SPIE Involvement:

Author

Proceedings Article | 20 April 2016 Open Access

Disaster mitigation based on smart structures/materials

H. Asanuma, J. Su, M. Shahinpoor, F. Felli, A. Paolozzi, M. Nejhad, L. Hihara, S. Aimmanee, Y. Furuya, K. Adachi, T. Yanaseko

Proceedings Volume 9803, 980302 (2016) https://doi.org/10.1117/12.2222153

KEYWORDS: Smart structures, Smart materials, Mechanical engineering, Energy harvesting, Aluminum, Aerospace engineering, Earthquakes, Corrosion, Polymers, Floods

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Proceedings Article | 6 April 2006 Paper

Magnetostriction of polycrystalline strong-textured Fe-17at%Ga alloy fabricated by combining rapid-solidification and sintering processes

Chihiro Saito, Yasubumi Furuya, Teiko Okazaki, Mamori Omori

Proceedings Volume 6170, 61700L (2006) https://doi.org/10.1117/12.658152

KEYWORDS: Magnetostrictive materials, Magnetism, Annealing, Gallium, Iron, Plasma, Crystals, X-ray diffraction, Actuators, Photomicroscopy

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Proceedings Article | 31 March 2006 Paper

Multi-functional surface acoustic wave sensor for monitoring environmental and structural condition

Y. Furuya, T. Kon, T. Okazaki, Y. Saigusa, T. Nomura

Proceedings Volume 6172, 61720Q (2006) https://doi.org/10.1117/12.659536

KEYWORDS: Sensors, Shape memory alloys, Acoustics, Thin films, Temperature metrology, Ferroelectric materials, Sensing systems, Environmental sensing, Environmental monitoring, Wave sensors

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Proceedings Article | 19 May 2005 Paper

Evaluation of stress-induced martensite phase in ferromagnetic shape memory alloy Fe-30.2at%Pd by non-destructive Barkhausen noise

Yasubumi Furuya, Teiko Okazaki, Takasi Ueno, Mark Spearing, Manfred Wutting

Proceedings Volume 5767, (2005) https://doi.org/10.1117/12.599255

KEYWORDS: Magnetism, Shape memory alloys, Nondestructive evaluation, Composites, Iron, Microscopes, Photography, Temperature metrology, X-ray diffraction, Ferromagnetics

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Proceedings Article | 11 March 2003 Paper

Characterization of rapid-solidified shape memory TiNiCu alloy as an actuator/sensor material element

Shizuka Tamoto, Takeshi Yamahira, Yasubumi Furuya, Takehiko Segawa

Proceedings Volume 4946, (2003) https://doi.org/10.1117/12.468289

KEYWORDS: Copper, Shape memory alloys, Chemical elements, Smart structures, Temperature metrology, Composites, Actuators, Argon, Photography, Atrial fibrillation

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Proceedings Article | 11 July 2002 Paper

Evaluation of phase transformation in ferromagnetic shape memory Fe-Pd alloy by magnetic Barkhausen noise

Yasubumi Furuya, Shizuka Tamoto, Takeshi Kubota, Teiko Okazaki, Nesbitt Hagood, S. Mark Spearing

Proceedings Volume 4699, (2002) https://doi.org/10.1117/12.474994

KEYWORDS: Magnetism, Nondestructive evaluation, Shape memory alloys, Sensors, Temperature metrology, Composites, Signal processing, Iron, Nickel, Ferromagnetics

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Proceedings Article | 6 April 2001 Paper

Properties of sputter-deposited Fe-Pd thin films

Zheng Wang, Takashi Iijima, Gan He, Toshio Takahashi, Katsunari Oikawa, Yasubumi Furuya

Proceedings Volume 4234, (2001) https://doi.org/10.1117/12.424418

KEYWORDS: Thin films, Crystals, Magnetism, Iron, Palladium, Sputter deposition, Heat treatments, Argon, Magnetostrictive materials, X-ray diffraction

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Proceedings Article | 13 June 1997 Paper

Development of photoelastic experiment model material for Ti50Ni50 SMA-FRP

Jai Hawong, Akira Shimamoto, Hyo Lee, Yasubumi Furuya

Proceedings Volume 3039, (1997) https://doi.org/10.1117/12.276574

KEYWORDS: Shape memory alloys, Photoelasticity, Composites, Epoxies, Glasses, Fringe analysis, Glass molding, Nickel, Shape analysis, Structured optical fibers

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Proceedings Article | 23 July 1993 Paper

Strengthening mechanisms of TiNi shape memory fiber/Al matrix composite

Minoru Taya, Yasubumi Furuya, Y. Yamada, Ryuzo Watanabe, Shinya Shibata, T. Mori

Proceedings Volume 1916, (1993) https://doi.org/10.1117/12.148494

KEYWORDS: Shape analysis, Composites, Shape memory alloys, Curium, Metals, Aluminum, Chlorine, Californium, Nickel, Data modeling

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Metal matrix composites (MMCs) have been studied intensively with expectation of applying MMCs to various structural and machine components. A recent summary of the thermomechanical behavior of MMCs has been given elsewhere.1'2 One of the important findings in the recent studies is that strengthening of MMCs is identified by two mechanisms: back stress strengthening and dislocation punching.3'4 In most MMC systems, the coefficient of thermal expansion (CTh) of reinforcement is smaller than that of metal matrix, resulting in tensile residual stress in the matrix at room temperature. This tensile residual stress in the matrix reduces the tensile flow stress (particularly yield stress) of a MMC.5 If the residual stress in the matrix in a MMC is controlled to be compressive, the tensile flow stress of the MMC is expected to be increased. A shape memory alloy (SMA) fiber, after its shape is memorized and presirained at martensitic phase, can shrink to its original length upon heating to austenitic finish temperature. If such shrinkable SMA fibers are embedded in a metal matrix to form a MMC, compressive residual stress in the matrix is induced at austenitic stage, resulting in enhanced tensile flow stress of the MMC, see the process of inducing such compressive residual stress in the matrix in Fig. 16. Motivated by the above idea depicted in Fig. 1 ,we are led to process TiNi SMA fiber/i 100 Al matrix (TiNi/Al) composite by pressure casting route, the details of which has been given elsewhere6. As-processed TiNi/Al composite was machined to tensile specimen of flat bar type and given tensile prestrain c at martensitic stage, then heated to 363K just above the austenitic finish temperature (337K), followed by tensile testing at 363K. The results of the stress-strain curves of TiNi/Al composite with and without prestrain, and unreinforced Al are shown in Fig. 2. It is obvious from Fig. 2 that the flow stress of the TiNi/Al composite with prestrain is higher than that of the composite without it, which in turn is higher than the unreinforced metal due to back stress strengthening mechanism. The strengthening due to prestrain is the main subject of this paper. The analytical model similar to the present one has been developed for the analysis of a short fiber SMA fiber MMC.7 Analytical modeling will be stated in section II and numerical results and comparison with the experimental results will be discussed in Section III, followed by the conclusion in Section IV.

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Conference Committee Involvement (1)

Smart Materials III

13 December 2004 | Sydney, Australia

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