The R-curve behavior of zirconia has been already reported by many researchers. On the other hand, the effect of cycling stress on cyclic fatigue behavior of zirconia has been also confirmed. It is important for the lifetime prediction on fatigue to make clear the correlation between the stress cycling effect and R-curve behavior. In this work, KI-V curve of stabilized zirconia was obtained by crack length measurement method using thin metal film for indentation small crack. Also a rising R-curve could be obtained from stable crack growth by three point bend with the 0.0025 mm/min for the small crack. A life time prediction for cyclic fatigue was obtained by assuming that the rising R-curve behavior due to the crack tip closure disappeared by the cyclic load. The predictions could well explain the experiments.

Indentation

Cyclic stress

10.1299/kikaia.79.735

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Dynamic and quasi-static behaviors of magneto-thermo-elastic stresses in a conducting hollow circular cylinder subjected to an arbitrary variation of magnetic field

International Journal of Mechanical Sciences (2007)

Masahiro Higuchi Ryuusuke Kawamura Yosuke Tanigawa

Lorentz force

Magnetostatics

10.1016/j.ijmecsci.2007.11.001

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Citations (10)

118 Greening Plant Consists of Moss and Ceramic Base Material Made by Recycling Waste GFRP : Development of base material with high wind resistance performance

The Proceedings of Conference of Kyushu Branch (2013)

Hiroyuki Kinoshita Toshifumi Yuji Yuusuke YASUDA Ryuusuke Kawamura Hiromori Miyagi

Base (topology)

Waste material

10.1299/jsmekyushu.2013.66.35

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Development and trial manufacture of water washing/high reflective paint spraying robot for concentrated feed tank

The Proceedings of the Materials and Mechanics Conference (2019)

Taichi Yamasaki Masaki Kataoka Hideaki MURAKOSO Hidenori OGIHARA Ryuusuke Kawamura

10.1299/jsmemm.2019.os0221

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Development and Trial Manufacture of Drive System of a Water Washing/High Reflective Paint Spray Coating Robot for a Concentrated Feed Tank

The Proceedings of Mechanical Engineering Congress Japan (2018)

Khin Saw Yee Taichi Yamasaki Kei AKAMATSU Takahiro Kai Masaru Aikawa

This paper presents a suitable technological solution to a problem of spray painting of high reflective paint. Recently, high reflective paint receives attention to reduce the temperature raise on the outside of large containers or storage tanks, and to maintain the quality of the material stored inside them. On the other hand, to coat the tall and large storage tank with high reflective paint often place the skilled workers of painting in a dangerous situation. For the skilled workers of painting who conduct washing with high-pressured water and/or spray painting outside the tank, the problem is height place working which is difficult to keep balance for sudden. This paper is aimed to solve the problem of height place working in spray painting outside of storage tanks by replacing a skilled worker with water washing and/or spray painting robot which can be controlled by the remote control from an operator on the ground. The most important factors for considering the suitable kinds of robot with respect to its application are described in this study. The driving mechanism and controller of the developed robot are explained in the present work. The ideas for developing the robot with desired working abilities can be followed according to this study.

10.1299/jsmemecj.2018.j0260201

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104 Thermally Induced Vibration of an Inhomogeneous Rectangular Plate Due to Cyclic Heating : Analysis under Condition of Zero Temperature Change on Lower Boundary Surface

Proceedings of the 1992 Annual Meeting of JSME/MMD (2005)

Hideki Hamamura Yoshinobu TANIGAWA Ryuusuke Kawamura

Theoretical analysis for thermally induced vibration of an inhomogeneous rectangular plate is treated in this study. It is assumed that material properties of the plate are given by the power product form with coordinate z'. Firstly, the one-dimensional transient heat conduction problem of the plate is developed when it is subjected to cyclic heating. Then, the thermally induced vibration for the plate is analyzed under the condition that all edges are to be simply supported in such a manner that the in-plane displacements are fully restrained. Next, numerical calculations are carried out, and we discussed about an effect of aspect ratio on thermal displacements, thermal stresses and resonance characteristic in the plate.

Aspect ratio (aeronautics)

Transient (computer programming)

Neutral plane

Bending of plates

Plate theory

10.1299/jsmezairiki.2005.0_7

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Production and Material Properties of Ceramic from Waste Glass Fiber Reinforced Plastic

Hiroyuki Kinoshita Koichi KAIZU Shintaro Hasegawa Takahiro Ando Ryuusuke Kawamura

Source

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OS0744 Cyclic Fatigue Life Prediction of Alumina Ceramics using Thin Metal Film Method

The Proceedings of the Materials and Mechanics Conference (2009)

Hitoo TOKUNAGA Kiyohiko IKEDA Katsuji OKAMURA Hiroyuki Kinoshita Ryuusuke Kawamura

In order to predict the cyclic fatigue life of alumina ceramics, a new method was proposed. First, to monitor the small crack growth behavior during static fatigue, a thin metal film method was proposed. Second, based on the crack growth data, crack growth characteristics and R-curve behavior were evaluated. Then, cyclic fatigue life was predicted, and predicted results were compared with cyclic fatigue test results. As the results, it is found that crack growth behavior can be monitored over wide range of crack growth rate by using the thin metal film method. And it is confirmed that the cyclic fatigue life of ceramics can be predicted by using proposed method.

Cyclic stress

Paris' law

10.1299/jsmemm.2009.695

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902 One-Dimensional Dynamic Magnetothermoelastic Analysis in a Conducting Infinite Plate Subjected to Cyclic Time Variation of Magnetic Field

The Proceedings of Conference of Kansai Branch (2005)

Hideki FUJIEDA Yoshinobu TANIGAWA Ryuusuke Kawamura Masahiro Higuchi

In the present paper, we have dealt with a theoretical treatment of one-dimensional magnetothermoelastic problem in a conducting infinite plate subjected to sinusoidal time variation of uniform magnetic field parallel to its boundary surfaces. We have derived temperature change in the plate due to eddy current loss and Lorentz force induced by interaction between eddy current and magnetic flux. We derive dynamic solutions of stress and displacement in the infinite plate associated with the time variation of temperature change and Lorentz force. Comparing numerical results of dynamic solutions with those of quasi-static ones, we discuss an effect of the inertial force on stress and displacement in the plate.

Lorentz force

Fictitious force

Variation (astronomy)

10.1299/jsmekansai.2005.80._9-3_

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