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光学非均匀单向纤维复合材料的应力光学行为

张武 王燕

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光学非均匀单向纤维复合材料的应力光学行为

张武, 王燕
cstr: 32037.14.aps.43.1192

STRESS-OPTICAL BEHAVIORS OF OPTICALLY HETERO-GENEOUS FIBER REINFORCED COMPOSITES

ZHANG WU, WANG YAN
cstr: 32037.14.aps.43.1192
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  • 通过傅里叶变换从新的角度考察了光学非均匀单向纤维增强复合材料的偏振光学行为,发现其光强I-方位角θ曲线主要仅由不多于三种基波组成,它们是零次(常量)、二次和四次基波。研究结果表明:四次基波的模与主应力差有很好的相关性,在所进行的实验条件下,四次基波的模都按正弦平方曲线规律随主应力差的增减而单调变化;并发现四次基波的初相角α∥4与双折射方向一致。在此基础上提出了复会材料双折射率,△Nc的概念。这一结果不仅对进一步认识纤维复合材料的复杂偏振光学现象可能有意义,而且也
    The polarizing optical behaviors and the stress-optical behaviors of optically heterogeneous fiber reinforced composites were studied. It was discovered that the light intensity vs azimuth curves (I-θ curves) consist of no more than three main variables, the zero, 2nd, and 4th variable, and can be represented in terms of these three variables with 5ma11 error. The more important point of this paper is the correlation of the 4th variable of I∥-θ curves(// here stands for the testing condition of the plane polariscopes with dark field) with stress. It was discovered that the value of the 4th modulus changes sinusoidally with the change in principal stress difference, (σ1-σ2∥), and the initial phase angle of the 4th variable coincides with the principal birefringent direction. Based on these experimental results, an equivalent birefringence theory was proposed as a substitution for conventional birefringence in the heterogeneous field.
    • 基金项目: 国家自然科学基金资助的课题.
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  • 文章访问数:  7578
  • PDF下载量:  653
  • 被引次数: 0
出版历程
  • 收稿日期:  1993-07-28
  • 刊出日期:  1994-07-20

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