Glass is used in a variety of fields, but when it is shattered there is a risk of people getting injured due to flying glass fragments. There have been many reports of harm caused by shattered glass fragments. The method of layer a shatterproof film on glass is effective because it is low cost and shatterproof, but the possibility of it being shattered by thermal fracture has not yet been much examined. In this present study, the process of thermal fracture of a glass layer with shatterproof film is shot with a high-speed camera, and the effect of the shatterproof film is validated.

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For protecting building against earthquake, the spring-mass model is used for analyzing the natural frequency of a building. However, It is difficult to apply the analysis of torsional vibration and so on. In finite element method (FEM), it is possible to analyze all types of mode including torsional mode using only one model. There are few results on the study that compared the vibration modes of virtual models with actual buildings. This study was conducting the modal analysis of the building using by FEM. Based on the comparison between the experimental and the analyzed results, the availability of making model for FEM is examined.

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[in Japanese]

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