Abstract
Avocados mature after a certain period of storage after harvesting. Non-destructive methods to evaluate the maturity of fruit have been investigated based on its firmness with vibration and acoustic testing. The methods require attaching relatively hard contact devices such as an exciter or an accelerometer to the fruit. From this, the fruit may suffer damage. Furthermore, if the fruit has a bumpy and soft surface, it is difficult to attach these devices. This study discusses dielectric elastomer actuators to vibrate the avocado that is a test sample as soft fruit. 0S2 mode frequency relates to the firmness of the fruit. In this experiment, we measure 0S2 mode frequency of the avocado during the dielectric elastomer actuator excitation. The maturity of the avocado is evaluated based on the relationship between a storage day and 0S2 mode frequency.
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