Using ultrasonic waves to measure the resilience of rubber compounds

Non destructive ultrasonic test has been used in many researches to study different material properties such as mechanical and structural properties. In this study, the Non destructive ultrasonic testing method has been employed to investigate the resilience of nonoclay reinforced rubber compounds. Fifty samples with different formulations were prepared and were tested for measuring the compound resilience percent and longitudinal ultrasonic wave velocity through the samples. After the data normalization, in the next step, a regression model for resilience according to the longitudinal ultrasonic wave velocity was developed. For the model validation, the another sample with different formulation was prepared and tested for resilience and ultrasonic wave velocity. The regression model had predicted the compound resilience with slight error of 1.4257 that shows the applicability of the developed model.