The disadvantage of two fine-tipped ultrasonic
transducers were angled towards each other, close together (5–
18 mm) on the surface of the sample, and the attenuation and
velocity of propagation were measured between them
The disadvantage of two-transducer ultrasonic methods is that
the transducers must be properly aligned, making such methods
difficult apply automatically or in a non-laboratory environment.
Single transducer pulse-echo techniques of fruit and vegetable
internals prove impossible as attenuation is twofold due to the
extra distance which must be travelled
This paper presents a novel, single-transducer method for
determining fruit quality, which can easily be applied automatically
or in the field.