Ultrasonic Wave Characteristics of Arumanis Mangoes And Damage Arumanis Mangoes By Fruit Fly
Abstract: The objective of
this research was to study the ultrasonic wave characteristic at arumanis
mangoes damage caused by fruit fly. The ultrasonic characteristics that was used
to sort the damaged mangoes from the normal mangoes were attenuation, velocity
and moment zero power (Mo) number. Results showed that mean attenuation
coeffcient of normal arumanis mangoes was 36.45 Np/m, mean velocity of
ultrasonic wave was 518.19 m/s and Mo number was 4.58. The mean attenuation
coeffcient arumanis mangoes which damaged by fruit fly was 30.67 Np/m, mean
velocity of ultrasonic wave was 731.72 m/s and Mo number was 6.40. Relation
between the ultrasonic wave characteristic with arumanis mangoes damage caused
by fruit fly showed that attenuation coeffcient of arumanis mangoes was increase
but damage arumanis mangoes level was decrease, while Mo number was increase in
parallel with increase of damage arumanis mangoes level. The ultrasonic wave
velocities of arumanis mangoes didn’t show clear correlation with damage
arumanis mangoes level, as shown by from value of r2=0.01. Larva weight of
inversely to value of attenuation coeffcient, correlation of logarithm value
r2=0.94. Correlation value of larva weight Mo with number was r2=0.38.
Author: Warji dan Rokhani
Hasbullah
Journal Code: jppertaniandd090111