Monday  |  Carnegie III  |  01:30 PM–01:50 PM

#13407, Non-Destructive Evaluation of Hot-Spots using the IR Thermography

This paper shows that it is possible to non-destructively evaluate hot-spots or critical stress points on the surface of structural components by using an infrared (IR) quasi-static methodology. The quasi-static method to measure the material fatigue limit was applied to a four-point bending beam case. Temperature measurements were taken at the surface while uniaxial and pure bending test specimens were quasi-statically loaded under monotonic conditions. Experimental observations relate the stress-strain-temperature measurements to the onset of yielding at the observed points of the uniaxial test specimens and strain-temperature measurements of the bending test specimens. This work aims to use the temperature monitoring of structures under quasi-static increased loading to predict how far from the material yield strength onset the stress or strain states of the observed points are located, providing information about the component's current situation.

Vitor Paiva   PUC-Rio
José Freire   PUC-Rio
Giancarlo Gonzáles   PUC-Rio
Luiz da Silva   PUC-Rio
Jorge Diniz   PUC-Rio
Renato Vieira   PUC-Rio