Z. Huo, H. Luan, H. Wei, S. Wang, X. Sun, L. Li, C. Li, Z. Wang
{"title":"软质材料光谱反射率的应变调制研究","authors":"Z. Huo, H. Luan, H. Wei, S. Wang, X. Sun, L. Li, C. Li, Z. Wang","doi":"10.1007/s11340-023-01015-z","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background</h3><p>Strain on soft materials plays a fundamental role in understanding the mechanical behavior of engineering soft machines and devices. However, it is challenging to noninvasively measure strain distribution on soft materials <i>in situ</i>.</p><h3 data-test=\"abstract-sub-heading\">Objective</h3><p>In this study, we investigate the mechanism for the strain modulation of spectral reflectance in soft materials like silica gels. This mechanism is about the effect of strain-induced roughness variance on the spectral reflectance.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Based on a simplified Torrance-Sparrow model, we established a theoretical relationship related the reflectance variance to the strain undergone by the specimen. By HSI, we measure the reflectance changes caused the strain; by CLSM experiment, we determine the surface roughness under different strains.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The theoretical model is verified by the reflectance analysis based HSI and the roughness analysis based on CLSM. The calibrated model parameters respectively from HSI and CLSM obtain a good agreement.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>For soft materials similar to silicone rubber, within the strain range covered in this paper, the surface roughness of the material has a linear relationship with strain, while the reflectance has an inverse quadratic relationship with roughness. Our proposed mechanism provides a possibility for non-contact strain measurement based on HSI.</p>","PeriodicalId":552,"journal":{"name":"Experimental Mechanics","volume":null,"pages":null},"PeriodicalIF":2.0000,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Research on Strain Modulation of Spectral Reflectance in Soft Materials\",\"authors\":\"Z. Huo, H. Luan, H. Wei, S. Wang, X. Sun, L. Li, C. Li, Z. Wang\",\"doi\":\"10.1007/s11340-023-01015-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Background</h3><p>Strain on soft materials plays a fundamental role in understanding the mechanical behavior of engineering soft machines and devices. However, it is challenging to noninvasively measure strain distribution on soft materials <i>in situ</i>.</p><h3 data-test=\\\"abstract-sub-heading\\\">Objective</h3><p>In this study, we investigate the mechanism for the strain modulation of spectral reflectance in soft materials like silica gels. This mechanism is about the effect of strain-induced roughness variance on the spectral reflectance.</p><h3 data-test=\\\"abstract-sub-heading\\\">Methods</h3><p>Based on a simplified Torrance-Sparrow model, we established a theoretical relationship related the reflectance variance to the strain undergone by the specimen. By HSI, we measure the reflectance changes caused the strain; by CLSM experiment, we determine the surface roughness under different strains.</p><h3 data-test=\\\"abstract-sub-heading\\\">Results</h3><p>The theoretical model is verified by the reflectance analysis based HSI and the roughness analysis based on CLSM. The calibrated model parameters respectively from HSI and CLSM obtain a good agreement.</p><h3 data-test=\\\"abstract-sub-heading\\\">Conclusions</h3><p>For soft materials similar to silicone rubber, within the strain range covered in this paper, the surface roughness of the material has a linear relationship with strain, while the reflectance has an inverse quadratic relationship with roughness. 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Research on Strain Modulation of Spectral Reflectance in Soft Materials
Background
Strain on soft materials plays a fundamental role in understanding the mechanical behavior of engineering soft machines and devices. However, it is challenging to noninvasively measure strain distribution on soft materials in situ.
Objective
In this study, we investigate the mechanism for the strain modulation of spectral reflectance in soft materials like silica gels. This mechanism is about the effect of strain-induced roughness variance on the spectral reflectance.
Methods
Based on a simplified Torrance-Sparrow model, we established a theoretical relationship related the reflectance variance to the strain undergone by the specimen. By HSI, we measure the reflectance changes caused the strain; by CLSM experiment, we determine the surface roughness under different strains.
Results
The theoretical model is verified by the reflectance analysis based HSI and the roughness analysis based on CLSM. The calibrated model parameters respectively from HSI and CLSM obtain a good agreement.
Conclusions
For soft materials similar to silicone rubber, within the strain range covered in this paper, the surface roughness of the material has a linear relationship with strain, while the reflectance has an inverse quadratic relationship with roughness. Our proposed mechanism provides a possibility for non-contact strain measurement based on HSI.
期刊介绍:
Experimental Mechanics is the official journal of the Society for Experimental Mechanics that publishes papers in all areas of experimentation including its theoretical and computational analysis. The journal covers research in design and implementation of novel or improved experiments to characterize materials, structures and systems. Articles extending the frontiers of experimental mechanics at large and small scales are particularly welcome.
Coverage extends from research in solid and fluids mechanics to fields at the intersection of disciplines including physics, chemistry and biology. Development of new devices and technologies for metrology applications in a wide range of industrial sectors (e.g., manufacturing, high-performance materials, aerospace, information technology, medicine, energy and environmental technologies) is also covered.