Oblique incidence response of photoelastic coatings

被引：0
|
作者：
J. Hubner
J. Nicolosi
L. Chen
P. Ifju
W. El-Ratal
机构：
[1] University of Florida,Department of Mechanical and Aerospace Engineering
[2] University of Tennessee,undefined
[3] R&D Technical Specialist at Visteon Corporation,undefined
来源：
Experimental Techniques | 2005年 / 29卷
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摘要：
A novel surface angle measurement technique is described using an LPC for surface inclinations between 20° and 70°. The technique utilizes the Fresnel transmission equations and a similar experimental setup for measuring strain. Measurement of the optical Fresnel response is necessary for accurate strain measurements. Additionally, the oblique angle intensity responses between a luminescent and reflective photoelastic coating are compared. The LPC exhibits a considerably more diffuse emission characteristic than the RPC. At 30° and 60°, respectively, the LPC normalized intensity retains 88% and 49% compared to 25% and 4% for the RPC, enabling more accurate strain measurements at higher surface inclinations.
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页码：52 / 56
页数：4
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