numerical analysis of longitudinal and transverse surface settlement induced by epb tunneling- a case study: shiraz subway tunnels reza rahmannejad; mahdi esfandiary; eshagh namazi; hamed jamshidi             determination of the racking reduction factor for an incomplete ellipse shaped tunnel considering the soil-structure interaction mohammad reza momenzadeh; mohammad reza mansoori; armin azi...

This study investigated the optimization of computer numerical control (CNC) boring operation parameters for aluminum alloy 6061T6 using the grey relational analysis (GRA) method. Nine experimental runs based on an orthogonal array of Taguchi method were performed. The surface properties of roughness average and roughness maximum as well as the roundness were selected as the quality targets. An...