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The Use of Ultrasound to Determine the Hardness and Quality of Corn


The acoustic velocity is affected by the elasticity and density of the material and is related to its physicochemical properties.

Applications of Ultrasound

In medicine
Testing metals
Food industry testing:
vegetable, meat, and milk product quality
meat product quality
cantaloupe and melon quality
avocado quality
water and fat content of fish
cheese firmness and maturity
cattle fat thickness
cookie and cracker density and porosity


With this method, two sensors are used: one which emits ultrasound waves and another that receives them (pitcher-catcher). The method is based on the variations in the transmission of ultrasonic energy produced by microstructural differences and changes