Experimental research of limits for thermal modulation transfer function

Ljubisa Tomic, Momcilo Milinovic
2009 Thermal Science  
The pa per pre sented test ing of sur face de fects by pulse video thermography techniques. Such tech niques rely on tran sient in fra red ra di a tion from the sam ple heated by the short du ra tion flux ini ti ated by flesh. Ex per i men tal mea sure ments are re alized by infrared sen sor (FLIR cam era). Test ing re sults are con sid ered for the samples with con trolled de signed de fects be yond ob served sur faces. The ef fects of response through the trans par ent wall are mea sured as
more » ... are mea sured as in fra red vis i ble ra di ance. Re searches with con trolled sam ples are per formed to ver ify vis i bil ity thresh old of de fect di men sions and forms, for pos si ble use as mod u la tion trans fer func tion of defects hid den be yond the sur faces of thin metal walls. Dimensionless co ef fi cients are de rived for method es ti ma tions as the re sults from ex per i men tal re search.
doi:10.2298/tsci0904119t fatcat:egbjius6jjg4laet5ynwqwabuy