Expansion of the database of MSDRD and analyses of S-N fatigue test data in ultra-long life regime

Author

Sakai, Tatsuo ; Shintani, Tomofumi ; Okada, Kenji ; Fukui, Satoshi ; Sogawa, Takafumi ; Oguma, Noriyasu

Author_Institution

Fac. of Sci. & Eng., Ritsumeikan Univ., Shiga, Japan

fYear

2001

fDate

2001

Firstpage

438

Lastpage

443

Abstract

The Research Group for Statistical Aspects of Material Strength [RGSAMS] has constructed and expanded the Material Strength Database for Reliability Design of Machines and Structures [MSDRD] by newly inputting fatigue data in the ultra-long life regime. When extracting long life fatigue data of metallic materials, duplex S-N characteristics consisting of two components for surface induced fracture and interior defect induced fracture were analyzed using a procedure proposed in this work. The difference between the slopes of S-N curves for the respective components was successfully explained by the difference of "m" in Paris\´ law in a vacuum and room atmosphere

Keywords

alloys; engineering information systems; fatigue testing; fracture mechanics; mechanical engineering computing; reliability; Material Strength Database for Reliability Design of Machines and Structures; S-N fatigue test data; duplex S-N characteristics; interior defect induced fracture; metallic materials; room atmosphere; surface induced fracture; ultra-long life regime; vacuum atmosphere; Data engineering; Databases; Educational institutions; Fatigue; Inorganic materials; Life testing; Materials reliability; Mechanical engineering; Mechanical factors; Statistical analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Environmentally Conscious Design and Inverse Manufacturing, 2001. Proceedings EcoDesign 2001: Second International Symposium on

Conference_Location

Tokyo

Print_ISBN

0-7695-1266-6

Type

conf

DOI

10.1109/.2001.992396

Filename

992396