Fatigue Property Group

・ Development of new evaluation methods for fatigue properties in low- and giga-cycles.
・ Application of original observation methods for micro cracks or microstrcutures and nano-indentation.

Specialized Research Field

(Examples of Research Projects )

・Proposition of predict formula of giga-cycles fatigue strength for high-strength steels.
・Development of materials strength database with high-resisting to hydrogen embrittlement.
・Evaluation of creep-fatigue properties of materials for A-USC boilers and rocket engines. 


New evaluation methods of fatigue properties

"Low- and High-cycles" Image

Low- and High-cycles


"Giga-cycles by ultrasonic machine" Image

Giga-cycles by ultrasonic machine



Original observation methods of fatigue crack growth

"New observation method of cracks" Image

New observation method of cracks



Prediction of creep-fatigue lives

"Transversgranular by pure fatigue" Image

Transversgranular by pure fatigue


"Intergranular by creep-fatigue" Image

Intergranular by creep-fatigue



Group Leader

"Masao HAYAKAWA" Image

Masao HAYAKAWA


Inquiry about this page

Fatigue Property Group
1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JAPAN
E-Mail: HAYAKAWA.Masao=nims.go.jp(Please change "=" to "@")
National Institute for Materials Science (NIMS)
1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JAPAN
TEL.+81-(0)-29-859-2000
FAX.+81-(0)-29-859-2029