TL AUTHENTICITY TESTS: COMPARISON BETWEEN MEASUREMENT METHODS FOR TEMPERATURE ESTIMATION DURING DRILLING

Sampling represents an important step of the procedure to perform authenticity tests by ThermoLuminescence (TL). The result of the test could be compromised if this phase is not correctly carried out. During the drilling, in fact, a local temperature increasing could cause a loss of the luminescence signal. In this paper, the comparison between IR thermography imaging and electrical measurements is shown also in order to validate a specific conceived model. The research is aimed at implementing the procedure used to perform the TL tests with the measurement of the temperature reached during the drilling. The measurements were performed using a pottery sherd simulating the collection step. Results show the validity of the model and provide data useful to optimize the sampling in TL test methodology.