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BACKGROUND The growing demand for self-sufficient systems has spurred the exploration of capturing lost residual energy. One alternative energy source is ambient acoustic energy from industrial and transportation noise pollution. Know methods include piezoelectric and electromagnetic techniques that suffer from low energy conversion efficiency and...

Published: 10/16/2024 | Inventor(s): James Manimala, Samarjith Biswas

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Category(s): Technology Classifications > Engineering > Mechanical & Aerospace Engr, Technology Classifications > Unmanned Systems, Technology Classifications > Transportation & Automotive, Technology Classifications > Construction

Turbine-Driven, Shared-Rotor Generator

BACKGROUND Rapidly evolving unmanned aircraft system (UAS) requirements have necessitated the creation of novel methods to provide power to these craft in increasingly niche environments such as high altitudes or using more available heavy fuels to existing platforms to provide power to these craft, particularly with regards to turbogenerators. However,...

Published: 7/26/2023 | Inventor(s): Joshua Johnsen, Kurt Rouser

Keywords(s): Energy & Environment, Engineering: Mechanical & Aerospace, Transportation, Unmanned Systems

Category(s): Technology Classifications > Transportation & Automotive, Technology Classifications > Unmanned Systems, Technology Classifications > Engineering > Mechanical & Aerospace Engr, Technology Classifications > Environment & Energy, Technology Classifications > Engineering

Desktop Slide Impactor

BACKGROUND Although impact testing is extensively used in the research, development, and quality control of mechanical structures, slide impactors delivering shear impact on an external surface (i.e., “slide impact”) has not yet been developed. The lack of a commercially available device to evaluate realistic slide impacts means a narrow...

Published: 5/17/2023 | Inventor(s): Linqi Zhang, Larry Vaughn, Ali Kalkan

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Category(s): Technology Classifications > Engineering > Mechanical & Aerospace Engr, Technology Classifications > Transportation & Automotive, Technology Classifications > Chemistry

Modular Concrete Pavement Expansion Joint

BACKGROUND Concrete pavements, including roads, parking lots, and industrial pavements, are critical to transportation and economic function. Joints are cut into the pavements, allowing for temperature-driven contraction and expansion to prevent further damage. Unfortunately, due in part to elimination of expansion joints and the preference of low-shrinkage...

Published: 5/17/2023 | Inventor(s): Norbert Delatte

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Category(s): Technology Classifications > Engineering > Civil Engr, Technology Classifications > Construction, Technology Classifications > Transportation & Automotive

Measuring workability of slip form concrete using vibrator and accelerometer

BACKGROUND When mixing concrete, vibration helps to consolidate fresh cementitious mix by reducing the volume of voids, air pockets, and entrapped air, increasing density and strength of the resultant material. However, vibrational consolidation can be overdone, pushing out needed water from the mix. Currently, monitoring concrete to ensure proper...

Published: 6/25/2024 | Inventor(s): Mohammad Uddin, Matthew (Tyler) Ley, Marllon (Daniel) Cook

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Category(s): Technology Classifications > Engineering > Civil Engr, Technology Classifications > Transportation & Automotive, Technology Classifications > Construction

Real Time Measurement of Moisture and Hydration of Concrete

BACKGROUND Concrete derives its strength from calcium silicate hydrate, a product of the hydration reaction that takes place when water is mixed with cement. A process known as curing, which involves providing continuous moisture and maintaining or providing heat to the concrete mixture, promotes the formation of calcium silicate hydrate. Curing conditions...

Published: 3/6/2023 | Inventor(s): Lichun Chen, Matthew (Tyler) Ley

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Category(s): Technology Classifications > Engineering > Civil Engr, Technology Classifications > Construction, Technology Classifications > Transportation & Automotive