List of Articles Open Access Article Abstract Page Full-Text 1 - Damage detection in gas transmission lines based on natural frequency changes via artificial neural networks Ali Asghar Binaieyan Ehsan Jamshidi Alireza Arghavan Open Access Article Abstract Page Full-Text 2 - Kinematic Modeling and Optimum Design of a Rehabilitation Mechanism for Leg Motion of People with Disabilities Ali Mokhtarian Faezeh Jahanshah Open Access Article Abstract Page Full-Text 3 - Vibration analysis of heavy machine gearbox housing using Finite Element Method Hessam Torabzadeh Kashi Mohsen Mardani Open Access Article Abstract Page Full-Text 4 - Design and Modeling of Ultrasonic Phased Array Testing and Ultrasonic waves propagation Simulation in Metal Plate by Finite Element Software (ABAQUS) shahram yareiee Open Access Article Abstract Page Full-Text 5 - Vibration analysis and control of cantilever micro-beam integrated piezoelectric actuator and sensor layers considering surface effects seyedali Eftekhari Mohammad KhajeKhabaz mohamad Hashemian Open Access Article Abstract Page Full-Text 6 - Identifying the modal behaviour of rotary equipment via estimation method Hossein Pirzadeh Alireza Mohammadion Armen Adamian Open Access Article Abstract Page Full-Text 7 - Analysis and presenting an optimum post weld heat treatment cycle to maximum reduction of residual stresses of electron beam welding Hossein Rajabi Ali Heidari