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单向碳/碳复合材料高温疲劳试验研究
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Affiliation of Author(s):能源与动力学院

Journal:推进技术

Key Words:高温;疲劳试验;碳/碳复合材料;单向板;剩余刚度;剩余强度;

Abstract:为了研究单向碳/碳的高温疲劳特性,从疲劳损伤力学出发,提出了考虑温度、氧化速率的碳/碳复合材料剩余刚度、剩余强度模型,并开展了碳/碳复合材料[0] 16 单向板试验件在室温、有涂层700℃和无涂层700℃的拉/拉疲劳试验和剩余强度试验。试验结果表明:单向碳/碳复合材料的剩余刚度曲线呈倒“S”形,材料的刚度退化存在三个阶段;单向碳/碳复合材料在室温和有抗氧化涂层700℃的疲劳加载初期和末期存在刚度突降,中期的刚度无明显退化;单向碳/碳复合材料在室温的疲劳刚度退化小于10%,而有抗氧化涂层单向碳/碳复合材料700℃的刚度退化超过30%;无抗氧化涂层单向碳/碳复合材料在疲劳中期存在明显刚度退化,末期无刚度突降。模型的拟合结果表明:复合材料高温剩余刚度、剩余强度模型能够很好地预测单向碳/碳复合材料在室温和700℃的剩余刚度、剩余强度变化。

Translation or Not:no

Date of Publication:2018-12-20

Co-author:,cht,zhj,XuYing

Correspondence Author:wwd

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Professor

Gender:Male

Alma Mater:南京航空航天大学

Education Level:With Certificate of Graduation for Doctorate Study

Degree:Doctoral Degree in Engineering

School/Department:College of Energy and Power Engineering

Discipline:Aerospace Propulsion Theory and Engineering. Power Machinery and Engineering

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