As an inspection method of the gas generated by decomposition within the soft container, the quality judgment in the vibration sound analysis for which the metallic can container used the electromagnetic pulse method is carried out. On the other hand, since a paper container, a plastic container, etc. did not have magnetism in the case of a soft container, by an electromagnetic pulse method, a vibration could not be given and a inspection was not completed. However, if the acoustic irradiation induced vibration is used, even if it is a soft container without magnetism, it is possible to make it vibrate easily. For the reason, the non-contact acoustic inspection which combined the acoustic irradiation induced vibration and the laser Doppler vibrometer is effective. By measuring the vibrational energy of a soft container, study was carried out about whether the inspection of the gas generated inside the soft container is possible. Since the difference in the vibrational energy according to the quantity of gas inside a soft container was detected from the result of the experiment using a test piece, an early detection of gas generating by the decomposition inside the soft container by the non-contact acoustic inspection method is possible.

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Fragrance is an essence of alcoholic beverages and soft drinks appeal, and a glass which can maximize this is important to improve the value of its contents. While various glasses that show good performance in highlighting fragrance are available, glasses from an engineering perspective are very few. In this study, we have developed a procedure that combines the visualization of alcohol gas and a Computer Aided Engineering (CAE) model for the behavior of a fragrance. We used this procedure to quantify the strength of fragrances for different glass shapes and compared them with sensory evaluations performed by blenders. A good agreement was found between these two in the comparison. This procedure enables the designing of glass shapes that excel in highlighting fragrance.

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