The National Institute for Materials Science (NIMS; President: Sukekatsu Ushioda), in cooperation with the Japan Aerospace Exploration Agency (JAXA; President: Naoki Okumura), is engaged in activities to evaluate the mechanical properties of metallic materials used in liquid rocket engines for Japan's H-IIA and H-IIB launch vehicles, aiming at enhancing the reliability of the launch vehicles. As a result of these activities, NIMS and JAXA issued a new Data Sheet on Space Use Materials:
DATA SHEET ON STRENGTH PROPERTIES FOR SPACE USE MATERIALS.
“No. 20 DATA SHEET ON FRACTURE TOUGHNESS AND HIGH-CYCLE FATIGUE PROPERTIES OF ALLOY 718 (1228 K ST) BASE METAL AND WELDED JOINTS”
These activities are part of efforts by NIMS to improve the intellectual infrastructure under its 3rd Five-year Plan (FY2011-FY2015) and by JAXA to maintain and develop main rockets under its 2nd Five-year Plan (FY2008-2012). Numerous results have been achieved to date, for example, elucidation of the fatigue mechanism of a titanium alloy and a nickel-base superalloy at cryogenic temperatures, etc.
For more detail
For Datasheet No.20
Yoshinori Ono
Materials Information Station
National Institute for Materials Science
TEL: +81-29-859-2335
FAX: +81-29-859-2301
E-Mail: ONO.Yoshinori=nims.go.jp
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Hideo Sunakawa
Space Transportation Propulsion Research and Development Center
Japan Aerospace Exploration Agency
TEL: +81-50-3362-2489
FAX: +81-29-868-5977
E-Mail: sunakawa.hideo=jaxa.jp
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