فهرست مقالات Central hole drilling method دسترسی آزاد مقاله صفحه چکیده متن کامل 1 - Experimental Study and Finite Element Simulation of Residual Stress in Welded Sections of Steel P91 Pipes with Multi-pass Welding Davood Azadi Nosratollah Solhjoei SayedAli Mousavi