A non-destructive thermographic procedure for the estimation of mechanical properties in steel through thermal diffusivity measurements

G. Dell'Avvocato; D. Palumbo; M. E. Palmieri; L. Tricarico; U. Galietti

doi:10.1117/12.2664838

12 June 2023 A non-destructive thermographic procedure for the estimation of mechanical properties in steel through thermal diffusivity measurements

G. Dell'Avvocato, D. Palumbo, M. E. Palmieri, L. Tricarico, U. Galietti

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Proceedings Volume 12536, Thermosense: Thermal Infrared Applications XLV; 125360F (2023) https://doi.org/10.1117/12.2664838
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Abstract

In this work, a thermographic non-destructive method has been investigated with the aim to estimate the mechanical properties of steels through thermal diffusivity measurements. Considering the anti-correlation between hardness and thermal diffusivity in steels, a thermographic procedure based on pulsed laser thermography has been used to investigate the technique's capability to discern different phase percentages in boron steel. After a discussion between two different methods to select the time window for thermographic measurements, an experimental investigation on nine specimens with three different phase percentages has been carried out, and a correlation among mechanical properties and phase percentages with different values of thermal diffusivity has been presented.

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Citation Download Citation

G. Dell'Avvocato, D. Palumbo, M. E. Palmieri, L. Tricarico, and U. Galietti "A non-destructive thermographic procedure for the estimation of mechanical properties in steel through thermal diffusivity measurements", Proc. SPIE 12536, Thermosense: Thermal Infrared Applications XLV, 125360F (12 June 2023); https://doi.org/10.1117/12.2664838

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