Technology: general issues 24 History of engineering & technology 23 microstructure 15 mechanical properties 14 Ti-6Al-4V 9 finite element analysis 9 additive manufacturing 8 machine learning 8 optimization 8 finite element method 7 numerical simulation 7 selective laser melting 7 simulation 7 corrosion 6 pattern recognition 6 reliability 6 residual stress 6 3D printing 5 IoT 5 artificial neural network 5 deep learning 5 fatigue 5 image processing 5 mechanical property 5 particle swarm optimization 5 surface modification 5 tensile strength 5 titanium alloy 5 variability 5 wear 5