Don J. Roth

• 3-D surface depression profiling using high frequency focused air-coupled ultrasonic pulses
• An NDE approach for characterizing quality problems in polymer matrix composites
• Development of a high performance acousto-ultrasonic scan system
• LabVIEW interface concepts used in NASA scientific investigations and virtual instruments
• Property and microstructural nonuniformity in the yttrium-barium-copper-oxide superconductor determined from electrical, magnetic, and ultrasonic measurements
• PSIDD:a post-scan interactive data display system for ultrasonic scans
• Quantitative void characterization in structural ceramics using scanning laser acoustic microscopy
• Reliability of scanning laser acoustic microscopy for detecting internal voids in structural ceramics
• Single transducer ultrasonic imaging method that eliminates the effect of plate thickness variation in the image
• Subtle porosity variation in the YBaCuO7-x high-temperature superconductor revealed by ultrasonic imaging
• The new Cloud Absorption Radiometer (CAR) software
• Thermographic imaging for high-temperature composite materials