| Abstract: |
Thermal Spray processes have long been used for repair or re-building of worn components in order to reclaim lost dimensions of the part. With the advent of such processes as HVOF, HVAF, and Cold Spray, coatings with dense microstructure, limited oxidation, and excellent-bonding can be produced via the repeated impact of particles with high kinetic energy. These coating and process attributes open up the avenue for thermal spray to be used in the repair of load bearing components and structures.
This talk addresses the methodologies for producing and testing coatings to be used for repair of load bearing components, as well as the feasibility of in-situ repair of load bearing structures, such as bridges and scaffolding, via Thermal Spray. The coating requirements for load bearing, fatigue, and corrosion resistance are addressed systematically using process mapping, in-situ coating stress measurements, coating modulus, and mechanical testing. The implications of this work are significant as it provides the methodologies for producing and testing load bearing coating and opens up a new avenue for a thermal spray application.
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