著者

菱山 幸宥 鏑木 裕 稲垣 道夫

出版者

炭素材料学会

雑誌

炭素 (ISSN:03715345)

巻号頁・発行日

vol.2011, no.249, pp.195-212, 2011-09-01 (Released:2011-09-22)

参考文献数

24

被引用文献数

1 2

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The relation of crystallinity and preferred orientation parameters to the magnetoresistance of carbon materials was examined. We derived the parameters for carbon samples having a planar orientation with the electric current flowing along the direction perpendicular to the orientation symmetry axis and for those having an axial orientation along the direction parallel to the orientation symmetry axis. On the basis of the magnetoresistance data on carbon materials, including pyrolytic carbons, carbon films, cokes, carbon fibers, etc., the formulae of orientation functions for planar and axial orientations were derived. The I3/I1 value derived from the orientation function is proposed as the parameter for preferred orientation in carbon materials, which changes in the range 0–2/3 for the planar orientation, 2/3 for random and point orientations and in the range 2/3–1 for the axial orientation. The parameter [Equation] shows a good correspondence to interlayer spacing d002 for all carbon materials used, which is useful to differentiate the crystallinity of highly graphitized materials.

著者

山田 能生 稲垣 道夫

出版者

炭素材料学会

雑誌

炭素 (ISSN:03715345)

巻号頁・発行日

vol.1997, no.178, pp.122-127, 1997-07-30 (Released:2011-07-05)

参考文献数

35

被引用文献数

1 7

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Synthesis and structure of carbyne were reviewed. Its synthesis was classified into physical and chemical methods. The relations to other carbon allotropes, diamond, graphite and fullerens were also discussed.

著者

稲垣 道夫 川原 彰裕 林 剛

出版者

愛知工業大学

雑誌

愛知工業大学研究報告. B, 専門関係論文集 (ISSN:03870812)

巻号頁・発行日

vol.36, pp.69-78, 2001-03

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Fibrous component in fir tree was separated and carbonized to 900℃ in inert atmosphere. Carbonized fir fibers thus prepared were found to have very high sorption capacity for heavy oils, both less viscous grade-A and viscous grade-C oils, which showed very strong dependence on bulk density of fir fibers. Heavy oil sorbed could be recovered from carbonized fir fibers with high efficiency as about 90% by either filtration under suction or washing with n-hexane. Sorption capacity showed a reduction with cycling of sorption and recovery to about 60% of the first cycle. Viscous grade-C oil could be recovered by less viscous grade-A oil, a mixture of grade-A with grade-C being called grade-B oil. Adsorption of water, particularly sea water by 900℃-carbonized fir fibers was very small in comparison with sorption capacity for heavy oils. The mousse-like mixture of grade-C heavy oil with water was sorbed into carbonized fir fibers, although sorption rate became a little slower.

著者

稲垣 道夫 岡田 明 小林 志希男 木村 勝美 福原 煕明 松本 庄次郎 青木 孝夫 中野 恵司 兼古 光行

出版者

社団法人溶接学会

雑誌

溶接学会誌 (ISSN:00214787)

巻号頁・発行日

vol.51, no.9, pp.775-783, 1982-09-05

被引用文献数

1

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For purpose to obtain the fundamental data of securing the reliability of welded joints, the establishment of welding control technique to make weld defects of arc welded joints in the natural condition, the design and trial making of ultrasonic point focussed probe in order to detect quantitatively planar defects and their application were carried out. And also, effects of the lack of penetration with one side welding of SM50B steels on the fatigue test results of welded joints were investigated. The main results are as follows; (1) Relation between the lack of penetration and welding condition in gas metal arc (GMA) welding were made clear. (2) The point focusing angle probe using spherical tansduser in ultrasonic detecting method was applied to the measurement of the size of lack of penetration. In case that the root face of butt welded joint was gas cut, the detecting accuracy was about±0.5mm. However, in case that there were blow-holes or some weld defects on the way of passing of ultrasonic beam or near the root, the size of planar defect was often mistaken. And also, in case that the root face was closely attached by welding, the detection of lack of penetration was often difficult. (3) The uniaxial stress fatigue strength of arc welded joints for SM50B steels which have the lack of penetration of about 2∿4mm in depth, without reinforcement and finished surface, was extremely lower than that of base metal and welded joints which have full penetration, without reinforcement and finished surface And the fatigue strength of arc welded joints with reinforcement showed the intermediate values between that of base metal or welded joints which have without reinforcement and finished surface and that of welded joint which have the lack of penetration of about 2∿4mm in depth, lowered fairly in comparison with that of base metal. These test results were discussed with non-linear fracture mechanics, consequently, the fatigue limits of welded joints are evaluated with effective notch depth as a whole.

著者

稲垣 道夫

出版者

一般社団法人 日本高圧力技術協会

雑誌

高圧力 (ISSN:21851662)

巻号頁・発行日

vol.8, no.5, pp.2102-2113, 1970-09-25 (Released:2010-08-05)