The Effect of Preheating on Weld Defect Formation Using X-ray Radiography. NTU Journal of Engineering and Technology, [S. l.], v. 4, n. 2, 2025. DOI: 10.56286/9cv1sj39. Disponível em: https://journals.ntu.edu.iq/index.php/NTU-JET/article/view/1258.. Acesso em: 5 dec. 2025.