Award Data

Diode-Pumped Alkali Lasers (DPALs) have great potential for high-energy lasers. Proper design of these systems is challenging because many interrelated processes impact their performance, and critical kinetic rate coefficients are not well known. In response, our team is developing a comprehensive physics-based analysis/design tool, and experimentally determining key kinetic rate coefficients. The ...

A Multimodal Acoustic Tool for Inline Pipe Inspection 3/19/2018 The US energy transport pipeline system is a longstanding distribution network with most of its still standing pipes being installed between the 1950s–1970s. Due to degradation mechanisms, such as embrittlement, capable of causing a two-fold reduction in fracture toughness, pipe rupture is a major risk. Current nondestructive ins ...

Proposal title: Rapid Assessment of Air Void System in Fresh Concrete Water expansion during freeze-thaw cycles can cause deterioration in concrete, leading to scaling, cracking, and crumbling over a period of years. Resistance to this damage is achieved with a system of voids formed by adding surfactants to the fresh concrete to stabilize air bubbles naturally entrained during mixing. The volume ...

Proposal title: Broken Rail Detection from Flashing Rear End Device Broken rails are a common cause of mainline derailments and a particular concern given the increasing use of our rail system for passenger traffic and petroleum products. The progressive nature of the defects provides an opportunity for early detection of cracks before they become significant enough to cause a derailment. Unfortu ...

CU Aerospace (CUA) and team partners San Jose St. University (SJSU) and Lockheed Martin Space Systems Company (LMSSC) propose to develop a robust epoxy resin regenerator capable of improving cryocooler efficiency by more than 30%, and to design an enhanced compressor motor capable of improving the cryocooler efficiency by more than 20%. LMSSC manufactures a space cryocooler that already meets most ...

Future MDA space missions will utilize small spacecraft with correspondingly small, advanced sensor systems. Cooling of these sensors is required to decrease detector noise and increase detector sensitivity by maintaining the detector at a reduced operating temperature. The cooling system comprises a mechanical cryocooler and its control electronics, both of which are critical technologies to enab ...

In this program, we will develop a breakthrough technology that will enable wafer-scale epitaxial lift-off (ELO) of GaN power device heterostructures from low-dislocation-density bulk GaN substrates. This technology will be used to provide a low-cost vertical junction field effect transistors (VJFETs) with high breakdown voltage (greater than 1,200 V) and high current capability (greater than 100 ...

In this Phase II SBIR program, Illinois Applied Research Associates will design, manufacture, and test a 1.06 um optimized Linear Mode (LM) avalanche photodiode (APD) array. The array will be electrically and optically characterized and will be tested for environmental and application constraints for integration into terrestrial and space based applications. The ability to operate in linear mode ...

Mentis and SDC are developing materials suitable for operating in extreme environments, such as those experienced by exit nozzles in Throttleable Divert and Attitude Control Systems (TDCAS), or as thermal protection in ballistic missiles and payload delivery systems. A material characterization effort is required to establish accurate material properties at storage and operational conditions. Ap ...

Diode-Pumped Alkali Laser Systems (DPALS) require a uniform, steady, flowing mixture of helium and rubidium vapor at elevated pressure and temperature. Significant challenges exist because rubidium is a very reactive material. In response, our team is developing a contamination-free, all-metal, hermetic, circulation system based on gas-bearing turbomachines. Specific benefits include low mass, ...