Award Data

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A completely new method is proposed to remotely measure the true temperature of substrates during chemical vapor deposition (CVD) processes. Conventional radiation pyrometry is not adequate since requires only that the sample be optically polished (specular) and opaque at the measurement wavelengths. These conditions are met for semiconductor and metallic substrates and coating materials of intere ...

The primary goals of the Phase I research plan are to develop a prototype absorbable stent for use in mid-tubal reanastomosis and to evaluate the effectiveness of this device in a rabbit experimental model. Mechanical design criteria will be determined by making measurements of luminal caliber and tubal compliance in freshly excised rabbit oviducts. The stent will be designed to 1) accommodate dis ...

The automated inspection of gas turbine components has proven to be difficult due to their complex geometry. While ultrasonics has demomstrated excellent capabilities in detecting and characterizing the erosion and corrosion on turbine components from the hot effluent gases, it's application details laborious alignment procedures for the ultrasonic transducer during inspection. The need for automa ...

BIOCHEMICAL LIVER FUNCTION TESTS HAVE BEEN USED BY PHYSICIANS IN THE IDENTIFICATION AND MANGEMENT OF LIVER DESEASE. THESE STATIC TESTS INCLUDE MEASUREMENTS OF ALBUMIN, BILIRUBIN, ENZYMES AND PROTHROMBIN TIME. ALTHOUGH SUCH MEASURES PROVIDE INFORMATION ABOUT THE IMMEDIATE FUNCTIONAL STATE OF THE LIVER, THEY ARE RARELY USEFUL IN THE PREDICITON FOR OUTCOME OF LIVER DISEASE. THEREFORE, THERE IS A NEED ...

RESEARCHERS ARE CONSTRUCTING TEST PANELS OF FIBER-REINFORCED-POLYMER HONEYCOMB (FRPH), INSTRUMENTED WITH STRAIN GAUGES AND ACOUSTIC SENSORS FOR CONDUCTING NON-DESTRUCTIVE EVALUATION (NDE) ACOUSTIC EMISSION (AE) AND PHYSICAL LOAD TESTING. FRPH STRUCTURAL ELEMENTS ARE HIGH-STRENGTH, LIGHTWEIGHT, CORROSION-RESISTANT, TOUTH, AND RESILIENT; THEY CAN BE MACHINE-MANUFACTURED USING A HIGH-VOLUME, CONTINUO ...

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Reliability and lifetime performance data for environemntal control systems (ECS) is limited. Real-time tests require 5-15 years, and results often apply only to obsolete technology. Accelerated life testing (ALT) is a means by which reliability data may be obtained quickly and at a reasonable cost. A primary difficulty with ALT of ECS units is that typical service conditions impose multiple stres ...

THE PLASMA BEATWAVE ACCELERATOR IS ONE OF A NUMBER OF PARTICLE ACCELERATOR CONCEPTS UTILIZING THE HIGH FIELDS INHERENT IN INTENSE LASER BEAMS. IN THIS CASE, EM WAVES INTERACT NONLINEARLY WITH AN UNDERDENSE PLASMA THROUGH OPTICAL MIXING OR RAMAN FORWARD SCATTERING (RFS) TO EXCITE LARGE AMPLITUDE PLASMA WAVES. THE PLASMA SELF-FIELDS PROVIDE THE ACCELERATION. THUS, THE CONCEPT IS A COLLECTIVEEFFECT A ...

The development of a compact, accurate and reliable laser beam discrimination device is proposed. The concept is based on a novel and improved Electron-Trapping (ET) material developed at the Naval Surface Warfare Center (NSWC), capable of discriminating between NIR, Far-IR, and UV laser sources used for the tracking and ranging of moving objects in the field. This ET phosphor emits visible radiat ...