基金supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)the Fourth Term of "333 Engineering" Program of Jiangsu Province under the project of "Fatigue and fracture performance of domestically produced high strength titanium alloys for the 4500m deep manned pressure hull" (Project No.BRA2011116)Youth Foundation of Jiangsu Province "Study on the time-scale crack growth rate model used in fatigue life assessment of pressure hull of deep-sea submersibles"(Project No. BK2012095)
