二段階イオン交換ガラスにおける応力プロファイル測定方法の開発

摘要

Stress distribution in multi-step ion-exchanged glass could not be measured accurately by conventional non-destructive stress measurement instrument and method. Therefore, by applying improved algorithm, stress distribution in 2-step ion-exchanged glass was evaluated. By comparing the results with 3 destructive measurement methods, it was confirmed that the measured stress value and the shape of distribution corresponded to the methods. Besides, it was shown that the accuracy of the new method was equal to the accuracy of conventional method for common 1-step ion-exchanged glass. Thus, it was confirmed that this developed method is applicable for the practical use.