Based on hyperspectral imaging technology,this article delves into the modulation effect of strain on the spectral reflectivity of a typical soft material-silica gel.Firstly,based on the Torrens-Sparrow reflection model,this paper establishes a theoretical model for modulating the spectral reflectivity of materials by changing their surface morphology under strain.Secondly,the surface micromorphology of the sample material under different strain states was obtained through confocal microscopy,and its roughness was calculated,and the surface spectral strain-reflectivity ratio was predicted.Finally,the spectral reflectivity of the material surface under different stain states was measured using a hyperspectral camera.The results showed that in the spectral band range of 475nm to 535nm,the reflectivity of compressed silica gel linearly decreased with increasing strain,which is in good agreement with the predicted results of the theoretical model.Based on the research results of this article,it is expected to develop a new experimental technology that directly measures material strain using reflectivity.
维普
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