Ali, K., Paw, J. K. S., M.Sulaiman, M., N. Abdalla, A., Hen, C. K., & Ding, T. J. (2018). S55c Carbon Steel for Heat Treatment Process with Different Medium in Attenuation Measurement using Ultrasonic Testing. International Journal of Engineering & Technology, 7(4.35), 527-533. https://doi.org/10.14419/ijet.v7i4.35.22904