Naoshi Hirai

主任研究員(研究院准教授)

  • 595 Citations
  • 13 h-Index
1993 …2019
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Rubber Engineering & Materials Science

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Research Output 1993 2019

  • 595 Citations
  • 13 h-Index
  • 61 Conference contribution
  • 26 Article
  • 1 Chapter
  • 1 Comment/debate

Broadband Far-infrared Spectroscopic Identification and Quantification of Antioxidants in Polymeric Insulation

Ogishima, T., Kozai, T., Hirai, N. & Ohki, Y., 2019 Feb 13, ICHVE 2018 - 2018 IEEE International Conference on High Voltage Engineering and Application. Institute of Electrical and Electronics Engineers Inc., 8641948. (ICHVE 2018 - 2018 IEEE International Conference on High Voltage Engineering and Application).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Antioxidants
Insulation
Infrared radiation
Low density polyethylenes
Infrared absorption

Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy

Ohki, Y., Hirai, N., Min, D., Yang, L. & Li, S., 2019 Jan 1, Minerals, Metals and Materials Series. Springer International Publishing, p. 1323-1332 10 p. (Minerals, Metals and Materials Series).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Silicone Elastomers
Dielectric spectroscopy
Silicones
Rubber
Degradation

Identification and quantification of phenol-type antioxidants in low-density polyethylene by broadband far-infrared spectroscopy

Ogishima, T., Kuroda, C., Hirai, N. & Ohki, Y., 2019 Jul 1, In : Polymer Testing. 76, p. 10-18 9 p.

Research output: Contribution to journalArticle

Low density polyethylenes
Polyethylene
Phenol
Antioxidants
Phenols

Insulation performance of safety-related cables for nuclear power plants under simulated severe accident conditions

Minakawa, T., Ikeda, M., Hirai, N. & Ohki, Y., 2019 Jan 1, In : IEEJ Transactions on Fundamentals and Materials. 139, 2, p. 54-59 6 p.

Research output: Contribution to journalArticle

Nuclear power plants
Insulation
Accidents
Cables
Steam

Successful detection of insulation degradation in cables by frequency domain reflectometry

Ohki, Y. & Hirai, N., 2019 Jan 1, Minerals, Metals and Materials Series. Springer International Publishing, p. 1293-1301 9 p. (Minerals, Metals and Materials Series).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Insulation
Cables
Degradation
Organic polymers
Electromagnetic waves