Award Data

This SBIR project will develop a low cost sensor to obtain rail temperatures from a moving train. The two innovative parts of the proposed sensor are (1) a rugged four wavelength high frequency sensor that accurately measures the natural radiation emitted by the rails, and (2) an advanced algorithm that provides a emissivity compensated temperature from these measurements. The feasibility of the ...

A back-illuminated planar InGaAs photodiode tested to have 95% quantum effiiency (QE) at 1550 nm, area greater than 1 mm2, low capacitance (125 MHz) will be improved. Although the existing Phase I device exhibited bulk material dark current generation better than commercially available devices, the sidewall-generated dark current was found to dominate the noise equiva ...

This project involves a feasibility study for a rapid scanning near-infrared/infrared spectrometer for transient, simultaneous measurements of CO2 and H20 concentrations, soot volume fractions and temperatures. Such measurements can lead to improved understanding of the structure of turbulent and laminar flames. A commercial instrument that can reliably provide simultaneous gas concentrtaion, so ...

DAMAGE TO ASPHALT PAVEMENTS OWING TO STRIPPING OF ASPALT CEMENT FROM AGGREGATE IN THE PRESENCE OF WATER HAS PRODUCED SERIOUS DISTRESS, REDUCED PERFORMANCE, AND INCREASED MAINT NTENANCE FOR PAVEMENTS IN THE UNITED STATES, AS WELL AS OTHERAREAS IN THE WORLD. THE PHENOMENON OF STRIPPING HAS BEEN STUDIED BY MANY INVESTIGATORS DURING THE PAST 50 YEARS. THE THE HIGHWAY RESEARCH BOARD, IN JANUARY, 1971, ...