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    张昭

    • 教授     博士生导师   硕士生导师
    • 主要任职:Professor in Process Mechanics
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:力学与航空航天学院
    • 学科:制造工艺力学. 工程力学. 计算力学
    • 办公地点:综合实验1号楼619
    • 联系方式:0411-84708432
    • 电子邮箱:zhangz@dlut.edu.cn

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    FATIGUE BEHAVIOR AND MECHANISM OF FV520B-I OWING TO THE EFFECT OF LOADING FREQUENCY ON THE FATIGUE PROPERTY IN HCF AND VHCF REGIME

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    论文类型:期刊论文

    第一作者:Wang, J.

    通讯作者:Zhang, Y (reprint author), Dalian Univ Technol, Sch Mech Engn, Dalian 116023, Peoples R China.

    合写作者:Zhang, Y.,Shi, B.,Zhao, Q.,Sun, Q.,Zhang, Z.,Lu, H.

    发表时间:2018-01-01

    发表刊物:ARCHIVES OF METALLURGY AND MATERIALS

    收录刊物:SCIE

    卷号:63

    期号:1

    页面范围:347-357

    ISSN号:1733-3490

    关键字:ultrahigh loading frequency; FV520B-I; fatigue strength; fatigue conversion model

    摘要:Fatigue property of FV520B-I is affected by the ultrahigh loading frequency significantly, and the ultrasonic fatigue experimental data can't be employed directly to analyze the fatigue failure in the actual remanufacturing engineering. However few theories about the effect of loading frequency on the fatigue property of FV520B-I has ever been proposed. In this paper, both ultrasonic experiment and conventional experiment are conducted out to obtain the fatigue data. The effect of loading frequency on the fatigue data distribution is discussed firstly, its fatigue limit declines with the increase of the loading frequency. Then the fracture surface observations are captured, the fatigue property and fatigue behavior mechanism of FV520B-I is examined by analyzing the fracture surface features, crack initiation and failure observations. A new material frequency correction factor is proposed and introduced to eliminate the influence of the loading frequency on the FV520B-I fatigue property. FV520B-I empirical fatigue life conversion model and fatigue strength conversion model are established with comprehensive use of a fitting algorithm based on the combination of experimental data and classic formula. A clear understand of the effect of loading frequency on the fatigue property of FV520B-I is novel and has an important significance in guaranteeing the accuracy of the actual fatigue analysis of FV520B-I in the remanufacturing engineering.