著者

山口 敬太 水谷 肇 出村 嘉史 川崎 雅史 樋口 忠彦

出版者

土木学会

雑誌

景観・デザイン研究論文集 (ISSN:18816045)

巻号頁・発行日

no.1, pp.185-192, 2006-12

---

For the landscape planning, it is necessary to reveal how people have been appreciated and conserved the landscape. In the early years of the Showa era, the evaluation of the landscape in Sagano had been changing. Guidebooks showed some new objects of sightseeing, and Otsuka and other writers began to describe the beauty of the landscape of Sagano, not in a traditional way. Administration also began to conserve the landscape especially its natural environment with the intension of economic development, as seen in the Ogurayama Park planning. This paper aims to examine that how people appreciated the landscape of Sagano in that times, with the analysis of histrical material as guidebooks and notes for tourists, and administrative documents concerning the landscape conservation in Sagano.

著者

江上 登 加賀谷 忠治 井上 宣之 竹下 弘秋 水谷 肇

出版者

一般社団法人日本機械学会

雑誌

日本機械学會論文集. A編 (ISSN:03875008)

巻号頁・発行日

vol.66, no.650, pp.1936-1942, 2000-10-25

被引用文献数

12 21 7

---

This study examines the effect of hybrid surface modification by vacuum carburizing and fine particle peening on fatigue strength behaviors of SCM 415 material. We used quenched vacuum carburized and hybrid, vacuum carburized and fine particle peened, specimen made of SCM 415 and measured their hardness distribution, mechanical properties, fatigue strength and crack propagation. In terms of the fatigue behaviors, we investigated the relationship between the crack propagation rate da/dN and stress intensity factor range △K, da/dN and effective stress intensity factor range △K_eff, as well as the fatigue crack initiation life N_i and crack failure life N_f of specimens. The results show specimens with hybird surface modification are effective in the prevention of fatigue crack initiation and fatigue crack propagation.