| 基于锁相热象法的金属疲劳特性评估方法研究 |
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| 引用本文： | 郭杏林,王晓钢. 基于锁相热象法的金属疲劳特性评估方法研究[J]. 机械强度, 2010, 32(2) |
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| 作者姓名： | 郭杏林 王晓钢 |
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| 作者单位： | 大连理工大学工业装备结构分析国家重点实验室,大连,116024 |
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| 摘 要： | 红外热象法作为一种无损、实时及非接触的测试技术,已应用于疲劳研究中。传统的疲劳试验方法存在试验周期长、耗费试件多等不足,而新兴的热象法可以快速确定金属材料或构件的疲劳极限。文中基于能量耗散理论,借助于先进的锁相热象技术,快速准确地测定Q235钢的疲劳极限。同时还对疲劳极限的热评估方法进行改进,以保证测试结果的准确性,有助于提供该类疲劳试验方法标准化依据。研究还表明,锁相热象法在健康监测中具有潜在的应用价值。
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| 关 键 词： | 疲劳 疲劳极限 热象法 固有耗散 锁相 |
RESEARCH ON THE EVALUATION METHOD OF METAL FATIGUE PROPERTIES BASED ON LOCK-IN THERMOGRAPHY |
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| GUO XingLin,WANG XiaoGang. RESEARCH ON THE EVALUATION METHOD OF METAL FATIGUE PROPERTIES BASED ON LOCK-IN THERMOGRAPHY[J]. Journal of Mechanical Strength, 2010, 32(2) |
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| Authors: | GUO XingLin WANG XiaoGang |
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| Affiliation: | State Key Laboratory of Structural Analysis for Industrial Equipment/a>;Dalian University of Technology/a>;Dalian 116024/a>;China |
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| Abstract: | Infrared thermography as a non-destructive,real-time and non-contact technology has been widely applied to fatigue research.There are some insufficiencies such as a long period and a consumed large quantity of specimens in traditional fatigue testing methods.However,the thermographic method is able to determine the fatigue limit of metallic materials and components just in a short time.The fatigue limit of steel Q235 was determined rapidly and accurately by the advanced lock-in thermographic technology acco... |
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| Keywords: | Fatigue Fatigue limit Thermographic method Intrinsic dissipation Lock-in |
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