waves transmitted in 1018 low carbon steel on temperature ranging from 0 C to 50 C were
investigated. It was shown that the velocities of the ultrasonic longitudinal wave and
ultrasonic shear wave were decreased when the temperature increased. The transportation
of the ultrasonic longitudinal wave and ultrasonic shear wave depends on temperature and
its coefficient in a temperature range of (0–50 C) was estimated about 0.8 m/s. C and 0.44 …