Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Akitoshi TAKEUCHI"'
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 90, Iss 933, Pp 23-00322-23-00322 (2024)
In order to estimate the thickness of adhered thin liquid film on lubricating surface using ultrasonic method, a synthetic wave of reflected waves at the solid-liquid interface and multiple reflected waves in the thin liquid film was calculated and t
Externí odkaz:
https://doaj.org/article/51f3ebd2a57c421e8c0b17ddaf6ef8bc
Autor:
Akitoshi TAKEUCHI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 89, Iss 928, Pp 23-00165-23-00165 (2023)
In order to obtain the fundamental information for the measurement of thin oil film thickness adhered on lubrication surface using ultrasonic method, the ultrasonic calculation considering the scattering attenuation at each interface and the influenc
Externí odkaz:
https://doaj.org/article/d75f97cc3e5b41559be81dda232dffa3
Autor:
Akitoshi TAKEUCHI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 89, Iss 917, Pp 22-00258-22-00258 (2023)
The pressure for supporting the bearing load is induced by the generation of discontinuity of the shear flow rate in each region only by arranging areas in the slip direction with different slipperiness of fluid. In this report, the generated pressur
Externí odkaz:
https://doaj.org/article/53ccaa7bcb2743eb9f32d5af1a5604ca
Autor:
Akitoshi TAKEUCHI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 87, Iss 903, Pp 21-00238-21-00238 (2021)
The generation state of the pressure for partial water-repellent (slip) type flat thrust bearings with high/low slip parts was examined with experiments and infinite width bearing approximation. In this bearing, water-repellent (WR: high slip), weak
Externí odkaz:
https://doaj.org/article/c9b9430441bd4d85a5e309178fcb96e1
Autor:
Akitoshi TAKEUCHI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 87, Iss 893, Pp 20-00226-20-00226 (2020)
The water lubrication characteristic of partial water-repellent (slip) type flat thrust bearings was examined. In this bearing, water-repellent (slip) regions and hydrophilic (non-slip) regions were alternately arranged in the slip direction, and the
Externí odkaz:
https://doaj.org/article/759ed11f27c844298c69a73ab4ab47b8
Autor:
Akitoshi TAKEUCHI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 85, Iss 878, Pp 19-00273-19-00273 (2019)
Eddy current method which is uninfluenced by oil film rupture or viscosity change was employed as a simple in-situ estimation method of bearing load acting on deep groove ball bearing operating under low rotational speed. The estimation of the bearin
Externí odkaz:
https://doaj.org/article/59cb02e0867343b3a0f8321fa3f9a6fa
Autor:
Akitoshi TAKEUCHI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 84, Iss 866, Pp 18-00281-18-00281 (2018)
Ultrasonic pulse reflection method was employed for in situ estimation of several forces including moment acting on dual race type hub-bearing operating with low speed. The estimation of these forces was performed through the observation of echo heig
Externí odkaz:
https://doaj.org/article/56a00e5b9c8e407c998c2add42d4f4c9
Autor:
Akitoshi TAKEUCHI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 84, Iss 857, Pp 17-00348-17-00348 (2017)
The potential of an ultrasonic biometric finger sensor to evaluate the finger load and surface texture in contact opposition was investigated under the range of quasi-static load and low sliding speed. The ultrasonic probe, which has a respective vib
Externí odkaz:
https://doaj.org/article/307127d992614dfba0f57db0f1efb083
Autor:
Akitoshi TAKEUCHI, Yukio KITAMURA
Publikováno v:
Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol 7, Iss 4, Pp 594-607 (2013)
In this study, a flat thrust bearing is developed by active exploiting the slip flow generated on a water-repellent surface. In order to produce a load, this bearing has a structure that generates a pressure flow by using the discontinuity of shear f
Externí odkaz:
https://doaj.org/article/fa32e85fada84deead2ad7b8375a8338
Autor:
Akitoshi Takeuchi
Publikováno v:
Tribology Online, Vol 5, Iss 3, Pp 161-164 (2010)
In this study, the flat thrust bearing was developed by actively exploiting the slip flow generated on a water-repellent surface. In order to produce a load, bearing has a structure that generates pressure flow by using the discontinuity of the shear
Externí odkaz:
https://doaj.org/article/1c35fe4f7c0643b1b4af5e551485ed35