Masahiko Yamaki

Public Works Research Institute

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Atsuko Sato

Jichi Medical University

Hirochika Hayashi

Civil Engineering Research Institute for Cold Region

Osamu Hatakeyama

Civil Engineering Research Institute for Cold Region

Jun Ikeda

Kyoto first Red Cross hospital

Toshinori Sakai

Mie University

Tsuyoshi Nakamura

Fukuoka Women's University

Hijiri HASHIMOTO

Civil Engineering Research Institute for Cold Region

Hiroaki Miyatake

Public Works Research Institute

Takahiro Yamanashi

Civil Engineering Research Institute for Cold Region

Takayuki Iiduka

Kobe Pharmaceutical University

Cooperative Institutions

Civil Engineering Research Institute for Cold Region

Public Works Research Institute

Hiroshima University

The University of Tokyo

Hokkaido University

Okayama University

Japan Society of Civil Engineers

Jichi Medical University

Okayama University of Science

Japan Agency for Marine-Earth Science and Technology

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Verifying the Effect of Anti-Frost Heaving Measure for Cut Slope of the One-Pack Heat Insulator Gabion by Test Construction and Heat Transfer Analysis

Journal of the Society of Materials Science Japan (2024)

Kohei ONMAYASHIKI Masahiko Yamaki Hirochika Hayashi Atsuko Sato

In cold and snowy regions such as Hokkaido, there are many examples of conventional anti-frost heaving measures on the cut slope by laying special gabion boxes to cover the slope surface, and this has become a common practice against frost heaving. However, do not prevent freeze penetration due to cold weather into the ground on the mountainside and it causes wavy deformation of special gabion boxes. Conventional special gabion boxes also require manual labor on slopes and at high elevations, complicating maintenance/management and causing lower workability and safety after the special gabion boxes have been installed. Therefore, we have researched and developed one-pack heat insulator gabions as a new anti-frost heaving measure on the cut slopes. In this study, countermeasures were test installed in winter and fall. The results of the test construction clarified that frost heaving may occur in case construction is performed in winter due to freezing penetration into the backside ground, even when a countermeasure against frost heaving is being taken. It was also confirmed that avoiding winter construction would fully demonstrate the effectiveness of the one-pack heat insulator gabions as a countermeasure.

Frost heaving

Frost (temperature)

Countermeasure

10.2472/jsms.73.52

Cite

Citations (0)

Durability of Meatal-insert Plastic-molded Gears

The Proceedings of Mechanical Engineering Congress Japan (2023)

Kazuya Takahashi Masahiro Fujii Masahiko Yamaki Yusuke SUGIURA

Plastic gears are used in a wide range of fields, and various studies have been conducted to improve their performance. The plastic gears have some advantages - for example, light weight and low vibration. It has significantly lower bending fatigue strength than metal gears. In recent years, Meatal-insert plastic-molded gears which combines metal and plastic have been attracting attention as one of ways to increase the fatigue strength of plastic gears. In this paper, we conducted fatigue test to investigate the durability and failure mode using the Metal-inset plastic-molded gears. The plastic coated to metal gears was polyether ether ketone filled with 20% carbon fiber. Failure mode of the gears was not tooth breakage due to bending fatigue, but peeling in the plastic coating layer. Maximum depth of the peeling was close to the depth which maximum shear stress and orthogonal shear stress ware maximum. Therefore, it was suggested that the evaluation could be similar to that of metal gears.

Insert (composites)

10.1299/jsmemecj.2023.s114-35

Cite

Citations (0)

[The wear resistance of composite resins--sliding wear test on enamel].

PubMed (1986)

Kai M Takahiro Andou A Yuuki J Satou N Satou

Source

Cite

Citations (0)

Relationship between anchor tension load and ground surface and underground temperature in winter

Japan Society of Civil Engineers eBooks (2021)