PATENTS

A free mass in mass unit cell is fixed to outer face of sleeper without disturbing the operation of existing track. The inner mass of 7 Kg moves freely and hit against the outer mass when the latter is subjected to external excitation due to motion of train. As a result, impact force is produced at the interface of both masses which helps in energy dissipation and hence vibration control.

A cantilever beam in mass unit cell is fixed to outer face of sleeper without disturbing the operation of existing track. The inner beams vibrate and free end masses hit against the outer mass when the latter is subjected to external excitation due to motion of train. As a result, impact force is produced at the interface of both masses which helps in energy dissipation and hence vibration control.

A frictional mass in mass unit cell is fixed to outer face of sleeper without disturbing the operation of existing track. The inner mass moves and rubs against the outer mass when the latter is subjected to external excitation due to motion of train. As a result, friction force is produced at the interface of both masses which helps in energy dissipation and hence vibration control.

The concept and validation of periodic mass-infused rail pads (PMIRP) developed for enhanced vibration control in railway tracks. It highlights key practical problems such as passenger discomfort, increased track maintenance, and complaints from nearby localities due to excessive vibration. The experimental setup shows a reduced-scale ballastless track system with rail, rail pad, sleeper, CBL, and HBL instrumented using accelerometers. Conventional rail pads are compared with PMIRP through laboratory testing under simulated train loading conditions. Experimental results demonstrate noticeable attenuation of vibration levels in the rail and supporting track components. Analytical frequency-domain results further explain the vibration mitigation mechanism introduced by periodic mass infusion. Overall, the PMIRP achieves up to 32.67% vibration reduction over a wide speed range of 150–300 km/h. 

This patent application discloses a novel shielding system for effectively protecting solar panels or solar farms from wind induced damage. Additionally, this shield will protect the solar panels from dust and thermal cooling effect due to wind flow; henceforth, the efficiency of the solar panels will enhance, and maintenance cost will reduce drastically. Furthermore, the proposed wind shield will enhance the wind velocity at a height along its concave shielding barriers. As well successful installation of the vertical axis wind turbines along the concave circular perimeter of the shield may convert that condensed energy into desired green and clean electrical energy. In a nutshell, the proposed wind shield will not only protect the solar panels from extreme wind events but also provide another means of wind energy harvesting. As a byproduct, the maintenance cost of the solar panels and dust removal will be reduced drastically.

The proposed Omni-directional resonator model presents a promising solution, effectively absorbing vibrations across a broad frequency spectrum and from multiple directions concurrently. Through the strategic use of anti-resonance, transmittance experiences a marked decrease when subjected to harmonic excitation near the resonant frequency of the embedded resonator. Employing 3D printing technology for monolithic model creation has notably reduced the number of joints in structures, mitigating geometrical uncertainties inherent in physical modeling. This innovative approach holds potential for robust vibration control and demonstrates advancements in both resonance manipulation and fabrication techniques.