Effects of Tensile Stress on the Hypersonic Properties of Thin Polymer Films
Effects of Tensile Stress on the Hypersonic Properties of Thin Polymer Films
复制标题
拉伸应力对聚合物薄膜高超声速性能的影响
DOI：
10.1143/jjap.40.3511
复制
发表时间：
2001
影响因子：
1.5
通讯作者：
N. Ohtori
中科院分区：
文献类型：
--
作者：
Mikio Yoshida;Kenzo Hisa;M. Matsukawa;T. Otani;N. Ohtori
利用布里渊散射方法研究了拉伸应力对聚合物薄膜高超声速的影响。从拉伸试验过程中的实时测量，观察到一个有趣的行为的纵波速度。通过比较速度剖面和应力应变曲线，速度变化表明薄膜的小尺度变形从边缘向中心逐渐扩展。这些结果指出了布里渊散射方法作为一种有用的工具，无损和实时测量样品中的应力和变形的可能性。
The effect of tensile stress on the hypersonic wave velocities of polymer films was investigated using a Brillouin scattering method. From the real-time measurements during the tensile test, an interesting behavior of the longitudinal wave velocity has been observed. By comparing the velocity profile with the stress-strain curve, velocity changes indicate that the small scale deformation of the film propagates from the edge to the center and gradually spreads. These results point out the possibility of the Brillouin scattering method as a useful tool for nondestructive and real-time measurement of the stress and deformation in the sample.