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In lumbar disc herniation a possible functional problem in the ambulation is the Foot-drop syndrome caused by radicular nerve pinching. This causes a dramatic loss in gait cycle efficiency. In the rehabilitation process patients may benefit from wearing a foot orthosis that prevents them from falling and secondary injuries. Evidence in the literature suggests the important correlation between the optimal match of the forces produced during human gait and the rigidity of the constructive materials. The inherent rigidity of the materials plays an important role in determining its biomechanical functions. The paper proposes an experimental and numerical characterization of 3D printed ABS and PLA specimens using a universal traction-compression testing machine and a finite element method numerical simulation.

Implementing an intelligent framework using an autonomous robotic platform offers an effective and versatile solution for monitoring chemical environments. The robotic platform can be customized by adding different types of sensors depending on the desired application. The intelligent control system is realized using a PID control line tracker algorithm allowing it to cover a larger area for data acquisition for further analysis. The data is logged in terms of platform position based on GPS coordinates and time stamp and time interval between sampling. We were able to test the behavior of the developed robot in aggressive chemical environments- acid and base- as well as in experimental ambient conditions (variable concentrations of O2 and CO2). The only limitation we found this moment is the concentrations of acids and bases to be used (Perchloric acid, Hydrochloric acid, Sulfuric acid, Acetic acid, Methanesulfonic acid, Sodium hydroxide, Potassium hydroxide, Sodium carbonate, Sodium sulfate, Sodium fluoride) starting from the observed and proved damage on the plastics of the wheel.

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An external three component strain gauge balance, designed, analyzed and manufactured in the Military Technical Academy is presented. The balance is a multi-piece type and employs the use of six custom-made load cells (sensors) to transfer the aerodynamic forces and moments from the wing to the computer software environment for data processing and analysis. The relations between the loads acting on the wing model and the measured forces are also underlined. The placement of the strain gauge on the composite laminate is an important issue for increased sensor precision; therefore, it is given a thorough analysis. The positioning of the force vector and its influence on the strain distribution over the lift sensor is also numerically and experimentally analyzed.