光学学报, 1998, 18 (12): 1760, 网络出版: 2006-10-18
非接触散斑干涉法测量高温物体应变的研究
Non-Contacting High Temperature Strain Measurement
摘要
描述了散斑干涉高温物体应变测试实验装置工作原理及其实验结果。对钨和石墨的测量表明:该装置可实现高温状态下材料应变测试,测试精度达1Lm。选择波长632.8nm、半宽2.4nm的窄带滤光片,配之预处理电路,对632.8nm辐射散射能力较强的材料(诸如钨带等)可实现2300 ℃高温非接触应变测量;对632.8nm辐射散射能力较差的材料(诸如石墨等)可实现1500 ℃高温非接触应变测量。
Abstract
The working principle and the experimental results of a non contacting strain measurement system is described based on laser speckle interference for high temperature sample. The measurement results for tungsten and graphite specimens show that the system can be used in the high temperature material strain mesurement with a 1 μm accuracy. Equipped with a narrow band filter of central wavelength 0.633 μm and bandwidth 2.4 nm and a suitable processing circuit, the highest temperatur of strain measurement reaches 2300℃ for low roughness material such as tungsten ribbon, and reaches 1500℃ for high roughness material such as graphite.
参考文献
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王淑荣, 李志刚. 非接触散斑干涉法测量高温物体应变的研究[J]. 光学学报, 1998, 18(12): 1760. 王淑荣, 李志刚. Non-Contacting High Temperature Strain Measurement[J]. Acta Optica Sinica, 1998, 18(12): 1760.
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