High-carbon structural steel wires were prestressed to various levels in a plasma hydrogenation environment and then pulled slow strain rate test (SSRT). The effect of under different prestressing on the material's tensile response hydrogen embrittlement was noted. It found that ultimate strength (UTS), yield strength, ductility wire samples are decreased by levels. more drastic decrease UTS, i...

This paper investigates natural frequencies of free transverse vibrations prestressed beams, and the governing equations vibration in related literatures are discussed corrected. The differential quadrature methods (DQ) applied directly to corrected get values frequency numerically. Under simple supported boundary conditions, model beam numerically studied, physical parameters analyzed respecti...