PATENTS

The metatile system is a floor-integrated passive seismic vibration control system designed to reduce the earthquake response of multi-storey buildings. It consists of a movable epoxy-resin flooring layer supported on rollers or ball-caster elements and positioned within a predefined gap from the surrounding structural boundaries. During seismic excitation, relative motion of the floor causes controlled impacts against the surrounding walls, transferring and dissipating seismic energy and thereby reducing the vibration of the primary structure. A silicon or rubber interface may be provided between the movable floor and the structural walls to absorb additional impact energy and prevent structural damage. Unlike conventional damping systems that require separate structural components or external power, the proposed system integrates the vibration-control mechanism directly into the usable floor surface. Numerical investigations on 6, 15, and 40 storey buildings subjected to 40 recorded earthquake ground motions showed reductions in peak and RMS structural displacement and favorable reductions in storey shear over most of the building height, while maintaining the motion of the habitable resonator floor at levels comparable to those of a conventional building.

The solar tile is a modular walkable photovoltaic system designed to convert illuminated floor and pavement surfaces into decentralized energy-generating areas. The tile integrates photovoltaic cells within a transparent protective layer supported by a load-bearing cementitious base, while a reflective inner cavity redirects incident light from inactive regions toward the embedded solar cells. This enables the cells to receive both direct and passively reflected sunlight, improving useful optical exposure without requiring a solar-tracking mechanism. The photovoltaic cells and electrical connections are protected within the tile, with concealed wiring allowing multiple units to be interconnected in series or parallel to form larger energy-generating surfaces. The transparent encapsulation permits light transmission while protecting the photovoltaic components and providing a usable walking surface. The modular system is intended for applications such as building floors, terraces, campuses, entrances, public walkways, and smart infrastructure, where the generated electricity can support lighting, sensors, signage, and other electrical loads.

The invention is an intuitive analytical tool developed for the comprehensive processing of raw ground-borne vibration velocity data. It automatically generates assessment reports by benchmarking the measured vibration levels against internationally recognised standards. The software accepts raw vibration velocity data as input and subsequently segregates it by individual train passage. Each segment is then denoised and subjected to detailed time- and frequency-domain analysis, including Fast Fourier Transform (FFT), Continuous Wavelet Transform (CWT), and 1/3-octave band analysis. The software further computes the overall mean vibration response for the recorded period, which may encompass multiple train passages. The software seamlessly analyses the recorded data and compares it with the existing standards, enabling fast and improved design strategies.

A lightweight, hinged-foldable deployable shelter for high-altitude military, disaster-relief, and remote habitation applications was developed and analytically validated . grübler–kutzbach analysis verified the deployment mechanism, while the optimized 50 mm GFRP–PIR sandwich panel (8 mm GFRP–34 mm PIR–8 mm GFRP) achieved low weight with structural, thermal and fire-resistance benefits. Indian standard-based analysis confirmed suitability for high-altitude conditions, with wind governing at 0.4 kn/m², alongside snow and seismic loads. Eight locking mechanisms, gusset connections, and ballast or ground anchors ensure structural and overturning stability.

The Confined Airbag–Steel Hybrid Structural System is a lightweight and rapidly deployable structural concept that combines a pressurized airbag with a steel framework to improve stiffness, load-carrying capacity, and structural efficiency. The confined airbag generates pneumatic prestressing, while the steel plates and bracing provide restraint and load distribution, enabling the system to act as a high-performance hybrid structure. Experimental and numerical studies demonstrated significant improvements in strength and deformation control compared to conventional inflatable systems. The technology offers a lightweight, compact, and scalable solution for military bridges, temporary crossings, and emergency infrastructure, combining the portability of inflatable structures with the strength and reliability of steel construction.

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.

The patent introduces an origami-inspired Self-Lockable Foldable Truss (SLFT) module for robust, portable foldable truss towers in various earth-based applications. Unlike existing structures, this design achieves high strength-to-weight ratios and an efficient folding ratio through origami principles and self-locking mechanisms. The innovation lies in a novel combination of regular and hybrid truss members, enabling bistable behavior: easy folding-deployment and self-locking under compression for stability. Tuned geometric parameters can be optimize for superior performance, ideal for military applications, communication, or wind turbine towers, enhancing load-bearing capacity without compromising portability. The SLFT module revolutionizes deployable structures, offering unparalleled adaptability and strength.

The current invention introduces a novel Rigid Elastic Vibration Isolator (REVI) model. This monolithic design, without any mechanical connections, significantly diminishes geometric uncertainties in physical modeling, enhancing its resilience to vibrations. The REVI exhibits a lower-frequency stop band compared to classical spring-mass resonators, attributed to the antiresonance phenomenon. Furthermore, customization of elastic beam and rigid mass properties enables tailoring the stop band as needed. This adaptable REVI system finds practical applications in fields like automotive and machine foundations, especially in scenarios demanding restricted vibration transmission.