E3S Web Conf.
Volume 269, 20212021 International Conference on Environmental Engineering, Agricultural Pollution and Hydraulical Studies (EEAPHS 2021)
|Number of page(s)||5|
|Published online||09 June 2021|
A study on the extreme value distribution of the minimum tensile strength of bolt
China National Quality Supervision and Inspection Center for Knife, Scissors and Domestic Metal Tool, Yangjiang, Guangdong, 529539, China
2 China National Accreditation Service for Conformity Assessment, Beijing, 100062, China
* Corresponding author: email@example.com
Taking M12.5 × 1.25 × 65-10.9 bolt as an example, this paper studies the extreme distribution of the minimum value of bolt tensile strength in order to evaluate the reliability and stability of bolt product quality and to verify the production process. Through data collection, parameter estimation, distribution test and extreme prediction, it is concluded that: 1) the distribution of the minimum value of bolt tensile strength conforms to Gumbel extreme distribution; 2) when the return period is 10000, the predicted minimum tensile strength is 1071.7 MPa ± 3.2 MPa, k = 2. It is higher than the minimum value of 1040 MPa required by ISO 898-1 standard.
© The Authors, published by EDP Sciences, 2021
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