画像処理を用いたPVAハイドロゲルの光弾性応力測定

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  • Photoelastic stress measurement of PVA hydrogel using image processing

抄録

<p>Photoelastic stress measurement of PVA hydrogel for vessel model was investigated. In order to apply to the vessel model, the properties of PVA hydrogel were evaluated. Young's modulus of PVA hydrogel is 0.06-0.45 MPa, which is useful for reproducing soft vascular tissue. The photoelastic coefficient of PVA hydrogel is 1.60×10-9 Pa-1, which is useful for photoelastic stress measurement. We constructed a new photoelastic observation system that can measure the value and direction of stress from only RGB values. In order to minimize the overlap ratio of the same color in color map, the number of 1 wave plate is 2 and the insertion angle is 30 degrees. Furthermore, a program was developed to output stress distribution images by image processing using this photoelastic observation system. As a result of photoelastic stress measurement of PVA hydrogel under tensile loading, measurement was successful with an error of 6.0%, which is sufficient accuracy.</p>

収録刊行物

  • 年次大会

    年次大会 2017 (0), J0470302-, 2017

    一般社団法人 日本機械学会

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