表面具有黏著特性之材料現今應用範圍非常廣泛，因此了材料特性相對重要。JKR試驗常被應用於量測材料之機械性質與黏著性質，因此，本研究改良現有之自組JKR實驗架構，提升其穩定性與精確度。我們利用此實驗架構量測聚二基矽氧烷(Polydimethylisiloxane)材料與玻璃球接觸之加載–卸載曲線。根據加載–卸載實驗曲線得知材料彈性模數E及表面黏著能W。接著，引用大變形JKR理論來描述材料超彈性行為當受力較大時所產生大變形實驗曲線，發現理論預測與實驗結果相當吻合。

The materials with adhesive properties have been widely used in today’s application, so it is important to understand their material properties. The JKR (Johnson-Kendall-Roberts) test has been applied to the measurement of the adhesion and mechanical properties of materials, therefore, this research modified the homemade experimental apparatus, in order to improve its stability and accuracy. We use this experimental apparatus to measure the loading–unloading curves of adhesive contact between the Polydimethylisiloxane (PDMS) and a glass ball. Based on loading–unloading curves, we obtained elastic modulus E and the work of adhesion W of PDMS. Also, using the large–deformation JKR theory, we predicted the experimental curves when the applied load is large and the material is hyperelastic. Finally, we found experimental results agree with the theoretical predictions quite well.

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