Reliability distribution of ADB610 steel impact toughness after strain aging

Author

Ma, Yanhui ; Yu, Jiwen ; Zhang, Tianhui ; Xu, Renping

Author_Institution

Yunnan Vocational Coll. of Machinary & Electr. Technol., Kunming, China

fYear

2011

fDate

16-18 April 2011

Firstpage

2447

Lastpage

2450

Abstract

Reliability distribution for impact toughness after strain aging of 38 mm thick ADB610 steel was investigated. The reliability distribution model was established by using least square method and correlation coefficent maximization method. Then the hypothesis test was calculated by using correlation coefficent test and K-S test method. It can be concluded that the impact toughness after strain aging of 38 mm ADB610 steel obeys Normal distribution, Lognormal distribution, 2-Weibull distribution and 3-Weibull distribution, and Lognormal distribution is the best. The confidence interval of 38 mm ADB610 steel impact toughness after strain aging was investigated, and the security impact toughness after strain aging is calculated to be [211.5, 219.3], [202.5, 213] and [186.6, 201.6] J based on 95% confidence level and 90%, 95% and 99% reliability.

Keywords

Weibull distribution; fracture toughness; least squares approximations; mechanical testing; normal distribution; optimisation; reliability; steel; strain ageing; ADB610 steel; K-S test method; Weibull distribution; confidence interval; correlation coefficent maximization method; correlation coefficent test; hypothesis test; impact toughness; least square method; lognormal distribution; normal distribution; reliability distribution model; size 38 mm; strain aging; ADB610 steel; impact toughness after strain aging; reliability distribution; security impact toughness;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on

Conference_Location

XianNing

Print_ISBN

978-1-61284-458-9

Type

conf

DOI

10.1109/CECNET.2011.5768622

Filename

5768622