Expertise
Magnetoelastic Sensors, Electrochemical Sensors, Chemical Sensors, Acoustic Wave Sensors, Infrared Sensors, Optical Sensors, Eddy current Sensors, Laser and X-ray diffraction Sensors applied to: food safety and quality, microbial and viral pathogen detection, medical analysis, agriculture, nuclear reactors, coal fired reactors, aerospace vehicles and automobiles/trucks, irradiated materials measurement, failure analysis, time dependent deformation, mechanical lifetime prediction, and environmental degradation of materials. Sensors applied to control of manufacturing processes: robotic manipulation, welding, joining and soldering. Welding and Joining: Developed infrared sensing techniques for the monitoring and control of the welding process. Developed processes for welding highly irradiated materials in power producing reactors.; Adaptive Materials: Developed methods of fabrication and manufacture for PZT and shape memory alloys. Theoretically and experimentally constructed demonstration devices for adaptive systems.; Sensor Development: Principal Investigator in a program to develop sensors for biological agent detection. Developed phage and antibody based MEMS sensors for security and medical application. Currently the director of the Auburn University Detection and Food Safety Center that funds over 25 faculty and 60 post docs; staff and graduate students.; Time Dependent Deformation: Principal investigator in an alloy development program to design and tailor alloys for high temperature applications in advanced reactor cores. Pioneered new test methods; developed phenomenological mechanisms and deformation maps to describe data; characterized failure modes and formulated constitutive materials equations for detailed reactor design.; Mechanical Lifetime Prediction: Responsible for the evaluation and development of stress to rupture design equations and end of life criteria for nuclear core materials.; Environmental Degradation of Materials: Responsible for assessing the effects of various gaseous and liquid metal environments on the creep and fatigue life of high temperature alloys. Established mechanisms describing the influence of environment on the failure of austenitic; ferritic and precipitation strengthened alloys.
Communities
Mechanical Engineering
Degrees
PhD, Stanford University, Materials Science and Engineering, 1976
MS, Stanford University, Materials Science and Engineering, 1974
BS, Auburn University, Materials Engineering, 1973
Keywords
mechanical engineering