Examples of Relevant Work

Relevant Work:

• Nondestructive testing of structural ceramics for Ceramic Technology for Advanced Heat Engines
• BES Welding Science Program
• Welding development for Fossil Energy Materials Program
• Welding and brazing development for Advanced Industrial Concepts and Ceramic Technology Programs
• Weldability studies for Space Nuclear Power and Magnetic Fusion Energy projects
• Advanced eddy-current probes & analysis programs for USNRC inspection of nuclear steam generators

Past Work Includes:

• Understanding the relationships among processes, microstructure, physical and mechanical properties,
• leading to the development of a unique, fast-transient 3D-mathematical modeling and experimental
• verification capability to address transport in welds and their influence on weld microstructures.
• Understanding the evolution of the weld metal microstructures during welding and subsequent elevated
• temperature exposure in support of welding single-crystal turbine blades and repair welding of
• single-crystal turbine components.
• Developing extensive expertise for brazing ceramics to related and non-related materials using special
• braze filler materials and metallizing to overcome wetting problems.
• Understanding solidification behavior and weld-cracking mechanisms in nickel aluminide alloys to guide
• development of new alloys resistant to weld solification cracking.
• Supporting development of RF antennas for plasma heating by providing guidance for material selection
• and conducting the joining procedure development for similar and dissimilar materials combinations.
• Routinely performing hot-cracking resistance tests on iridium alloy fuel cladding used in the space nuclear
• program as a part of flight qualification for NASA missions.