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ISSN:2394-3661 | Crossref DOI | SJIF: 5.138 | PIF: 3.854

International Journal of Engineering and Applied Sciences

(An ISO 9001:2008 Certified Online and Print Journal)

Parameter distribution of crack growth rate in titanium alloy of manned submersible

( Volume 6 Issue 6,June 2019 ) OPEN ACCESS
Author(s):

Chunyang Zhao, Benyang Tu, Xuncheng Tu

Abstract:

Based on the Paris and Walker theories of fatigue crack propagation in titanium alloys, a normal distribution model and a two-parameter weibull distribution model were established, and the results under different crack propagation models and different distribution characteristics were compared. The fatigue crack growth model was used to analyze the distribution characteristics of the uncertain material parameters n, m and C under the normal distribution and weibull distribution. Under the condition of crack propagation, the fitting stability of uncertain material parameters under normal distribution is better than weibull distribution with low dispersion.

DOI DOI :

https://dx.doi.org/10.31873/IJEAS.6.6.2019.04

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