Award Data

EXPLORE TO WHAT EXTENT THE EXISTING MICRO REACTION RATE KINETIC THEORY OF THERMALLY ACTIVATED FRACTURE CAN BE USED TO RELATE THE PARAMETERS OF PROBABILISTIC MACRO ENGINEERING MODELS OF CUMULATIVE DAMAGE (FATIGUE, FATIGUE CRACK GROWTH) TO THE USUAL PARAMETERS OF ENGINEERING SIGNIFICANCE SO THAT ACCURATE PREDICTION OF CRACK GROWTH CAN BE ACHIEVEDWITH MINIMUM TESTING FOR A SPECIFIC SET OF ENGINEERING ...

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SINGLE SPINDLE SCREW MACHINES HAVE REMAINED ESSENTIALLY UNCHANGED IN DESIGN AND OPERATION SINCE EARLY IN THE CENTURY. CAMS AND LEVERS ARE STILL THE PRINCIPAL MEANS OF OPERATING THE SLIDES. ALTHOUGH VERY PRODUCTIVE ONCE SET UP, THE TREND TOWARD SMALLER LOT SIZES, SETUP TIME REQUIREMENTS, AND SUPPORT SKILLS REQUIREMENTS HAVE COMBINED TO SUPPLANT THE USE OF THESE MACHINES WITH GENERAL PURPOSE CNC MAC ...

THIS PROPOSAL ADDRESSES THE NEED TO DEVELOP A METHOD OF REMOTELY CONTROLLING THE TAPER OF THE INDIVIDUAL TRACK SECTIONS AT ARNOLD ENGINEERING DEVELOPMENT CENTER'S G-RANGE HYPERVELOCITY TEST TRACK. A FEASIBILITY STUDY WILL BE CONDUCTED TO DETERMINE THE TRACK TAPERING REQUIREMENTS, EVALUATE THE MOST PROMISING AND COST-EFFECTIVE POTENTIAL TAPERING METHODS. THE STUDY WILL INCLUDE THE FABRICATION OF KE ...

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An innovative data collection and analysis approach is proposed to enable body mount magnetometers for space application. In order to achieve high accurate magnetic field measurement in space, the magnetometer has to be located in a âmagnetically cleanâ place, where the magnetic field from spacecraft is negligible. Usually, the magnetometers are placed on deployable booms, so that the field sens ...