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| 疲劳与蠕变复合作用下PS的应变与寿命 | |
| 引用本文： | 宋之敏,黄婉霞,倪海鹰,刘民治.疲劳与蠕变复合作用下PS的应变与寿命[J].塑料工业,2002,30(6):41-43. |
| 作者姓名： | 宋之敏 黄婉霞 倪海鹰 刘民治 |
| 作者单位： | 1. 四川大学分析测试中心,成都,610065 2. 四川大学材料科学与工程学院,成都,610065 3. 四川大学高分子材料科学与工程学院,成都,610065 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 对PS在疲劳/蠕变复合作用下应变与寿命进行了研究。结果表明：其疲劳/蠕变曲线与纯蠕变曲线十分相似。加载时间周期越短和疲劳载荷变化越频繁。结束普弹应变阶段应变越小，进入延迟弹性变形的平台应变阶段越早。在疲劳/蠕变复合作用下聚苯乙烯存在疲劳和蠕变的交互损伤，其断裂寿命比纯疲劳或纯蠕变的断裂寿命低。断裂寿命减小，疲劳/蠕变的交互损伤程度与温度密切相关，PS在较低温度的疲劳/蠕变交互损伤作用大于较高温度的交互损伤作用。随温度升高，疲劳/蠕变断裂寿命下降是疲劳和蠕变各自的单独损伤增加所致。 |
| 关 键 词： | 疲劳 蠕变 复合作用 PS 应变 寿命 聚苯乙烯 交互损伤 |
| 修稿时间： | 2002年4月28日 |
Study on Strain and Breaking Life of Polystyrene in Fatigue and Creep Coaction |
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| Song Zhimin,Huang Wanxia,Ni Haiying,Liu Minzhi.Study on Strain and Breaking Life of Polystyrene in Fatigue and Creep Coaction[J].China Plastics Industry,2002,30(6):41-43. | |
| Authors: | Song Zhimin Huang Wanxia Ni Haiying Liu Minzhi |
| Affiliation: | Song Zhimin 1 Huang Wanxia 2 Ni Haiying 3 Liu Minzhi 2 |
| Abstract: | A study of the strain and breaking life of polystyrene in fatigue and creep co action was made,and the results showed the curves of fatigue/creep were very similar to the curves of pure creep The shorter of the loading time and the more frequent of the fatigue load change,the smaller the general elastic strain stage to the end and the earlier the delayed elastic strain platform stage to begin There had a mutual damage of polystyrene both in fatigue and creep coaction The breaking life was shorter than that of pure fatigue or creep The degree of mutual damages both in fatigue and creep was closely related to temperature The degree of mutual damages at lower temperature was more obvious than that at higher temperature The decrease of breaking life with the increase of temperature was a result of the individual damage of pure fatigue or creep increases |
| Keywords: | PS Fatigue Creep Strain Life Mutual Damage |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |