Non-destructive Characteristics of Ultrasonic Waves in 1018 Low Carbon Steel

Abstract

In this paper, the dependences of the velocities and the absorption coefficients of ultrasonic waves transmitted in 1018 low carbon steel on temperature ranging from 0\(^{\circ}\)C to 50\(^{\circ}\)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 \(^{\circ}\)C) was estimated about 0.8 m/s.\(^{\circ}\)C and 0.44~m/s.\(^{\circ}\)C, respectively. These obtained results are in good agreement with the theoretical prediction. Furthermore, the absorption coefficients of the ultrasonic longitudinal wave were also studied.

Ultrasonic Velocity and Attenuation of Low Carbon Steel at High Temperatures

“…Figure 3 shows the plot chart of calculated Young's modulus and Poisson's ratio from 30°C to 250°C by equation (8). It indicates that Young's modulus decreases consistently when the temperature increase and Poisson's ratio increases when the temperature increases, similar to the findings of other researchers [39]. Three sets of data were taken at each temperature to record the longitudinal velocity in the temperature range of 30°C to 250°C.…”

Experimental Investigation on the Corrosion Detectability of A36 Low Carbon Steel by the Method of Phased Array Corrosion Mapping

“…An earlier experiment that successfully addr the issue of how the temperature of the object being detected might affect the ultra velocity was employed in this study. The earlier experiment verified the theoretical ity calculation, including the heat-conduction coefficient K [47]. Figure 3 shows the tudinal velocity values between 30 °C and 250 °C.…”

Ultrasonic Velocity and Attenuation of Low-Carbon Steel at High Temperatures

“…This data can be extremely useful in a variety of domains, including materials science, engineering, and non-destructive testing, allowing for greater knowledge of material behaviour and facilitating informed decision making in practical applications [ 32 ]. where: = Poisson’s ratio, ρ = material density, G = Shear modulus, E = Young’s modulus = longitudinal velocity, = transverse (shear) velocity [ 33 ].…”

“…reported by many researchers for Young's modulus is −0.0803 GPa/ • C, and for Poisson's ratio, it is 2.4 × 10 −5 / • C [33]. The theoretical calculation in this paper was first to obtain Young's modulus and Poisson's ratio in different temperatures using Equation ( 8), and after that, use Equation (3) to calculate longitudinal velocity in different temperatures.…”

“…where: v = Poisson's ratio, ρ = material density, G = Shear modulus, E = Young's modulus C longitudinal = longitudinal velocity, C transverse = transverse (shear) velocity [33].…”