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用超声导波幅度谱方法评价复合材料板材疲劳损伤的数值研究 被引量：2

Numerical analyses of evaluation of fatigue damage in composite sheets using ultrasonic guided wave amplitude spectra
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摘要 基于超声导波的频散方程及位移场表达式,对单向碳纤维/环氧复合板中传播的超声导波的幅度谱进行了数值研究,得到了能全面、直观反映复合材料板材疲劳损伤程度的超声导波幅度谱的灰度图。数值分析表明,当复合材料板材承受拉伸或弯曲载荷时,其等效杨氏模量或等效剪切模量的变化率,与超声导波幅度谱的灰度平均值之间存在单调的对应关系。采用超声导波的幅度谱方法可望能有效定征复合材料板材的初期疲劳损伤。 Based on the dispersion equation and the displacement field expression of ultrasonic guided waves,ultrasonic guided wave amplitude spectra have been studied numerically for a unidirectional carbon fiber sheet.The gray images of ultrasonic guided wave amplitude spectra that can straightforwardly characterize the degree of fatigue in composite sheets are obtained.The numerical results show that,with the tension-tension or bending fatigue loading,there is a monotonic relationship between the average gray value of gray images of ultrasonic guided wave amplitude spectra and the change rate of equivalent Young＇s modulus or equivalent shear modulus.It is concluded that the ultrasonic guided wave amplitude spectra may be used to effectively characterize the early stages of fatigue damage in composite sheets.
作者 裴俊峰 邓明晰
机构地区 后勤工程学院基础部
出处 《复合材料学报》 EI CAS CSCD 北大核心 2010年第2期169-175,共7页 Acta Materiae Compositae Sinica
基金 重庆市自然科学基金(CSTC 2008BB0140)
关键词 复合材料板材 疲劳损伤 超声导波 幅度谱 数值研究 composite sheet fatigue damage ultrasonic guided waves amplitude spectra numerical analysis
分类号 TB330.1 [一般工业技术—材料科学与工程]
  • 相关文献

参考文献17

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二级参考文献15

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共引文献48

同被引文献26

  • 1李涛,高兴,商伟辉,张淑萍.船舶用复合材料的性能研究[J].玻璃钢／复合材料,2011(2):32-35. 被引量：14
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  • 3蔡建丽,余欢,王云英,熊林冬.玻璃钢蜂窝夹层结构制品常见缺陷修补技术[J].玻璃钢／复合材料,2011(1):44-47. 被引量：13
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二级引证文献6

复合材料学报
2010年 第2期

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