A simple method for determining the thermal effusivity of defectsAhmed Elhassnaoui, Abderrahim Saifi, Asseya Elamiri and Smail SahnounEur. Phys. J. Appl. Phys., 66 2 (2014) 20501DOI: https://doi.org/10.1051/epjap/2014140026