ZENG  Lingke  WU Weisheng

(Dcpartmcnt of Inorganic M alcrial, South China Univcrsity ofTcchnology)

Abstract: As a tool of nondcstruclivc testing (NDT) for ceramic products, the in frared thermal inaging has morc charactcristics than olhers. Bascd on thc hcat conduction theory, the mcchanism of NDT wilh infrarcd thermal imaging has been studied and the mathcm atical modcl of thc transicnt heat conduction has also been dcrived. By comparing the result of compuler simulation using this model with that measurcd by infrarcd thermal imaging, it shows that the mathematical mnodel can bc uscd to study and simulate the dctcctling proccss of ccramic product.

Key words: infrared thermal imaging nondcstructivc testing, finit clcment theory, mathematical model of transicnt heat conduclion, com puler simulation, ceramic product