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Eric Tucker

Publications and source records attributed to Eric Tucker.

4 records
All sourcesNASA NTRSDOE OSTI
NASA NTRSDate not supplied

Defect Detection in ISC Cylinder Using Spoof Plasmon Polaritons

NASA is exploring the use of microwave spoof plasmon polaritons to detect defects in integrally stiffened cylinders. This work investigates the detection of simulated defects in the form of aluminum wires as small as 10 mm long and 3.1 mm diameter that are placed in between stiffeners of an ISC. The wires simulate manufacturing inclusions defects, and the sum of the delta impedance is shown to increase with increasing volume of added metal.

spoof↗
NASA NTRSDate not supplied

Microwave Interrogation of Woven Straps under Light Loading for Inflatable Applications

NASA uses woven straps for restraint layers in inflatable structures. This work investigates the use of microwaves to measure low level loading in the woven straps. More specifically, microwaves from a linearly polarized antenna are used to investigate four straps composed of Vectran and Kevlar with ratings of 6,000 lbs and 12,000 lbs of force. The straps are all lightly loaded from 2kg to 10kg in 2kg increments. The spectral centroid (SC) technique has been used for the dimensionality reduction method to evaluate the microwave data. The SC method was used to reduce the data from 10001 points to a single point that corresponds to the amount of load on the strap.

Microwave↗