The determination modulli of iron, aluminum and magnesium materials using ultrasonic testing / Ahmad Shafiq Zainuddin

The three sample of different type of materials (iron, aluminum and magnesium) are
used to determine the moduli properties. They were undergoing ultrasonic testing
method to determine the longitudinal and shear wave velocity. In determining of
wave velocity, we use Echograph instrument to measure time of wave travel through
the sample in longitudinal and transverse. From this velocity of wave, the value of
moduli (MOE, shear modulus and poisson rato) can be calculated by using a specific
formula. From this experiment, it can be conclude that the iron have the highest value
among the samples in MOE and shear modulus but not in poisson ratio. The
aluminum sample was the highest in poisson ratio. The magnesium was low on three
types of moduli value because it is popular as a brittle material.