Pamungkas, N., Suheri, S. and Leksonowati, N.F. 2021. Numerical Simulation Hot-Spot Stress and Stress Concentration Factor in Simple Tubular Joints T, Y, K, and X. Jurnal Teknologi dan Riset Terapan (JATRA). 3, 1 (Jun. 2021), 14-20. DOI:https://doi.org/10.30871/jatra.v3i1.3104.