پديدآورندگان :
Mohammadian Milad Milad_mohammadian@modares.ac.ir MSc, Faculty of Mechanical Eng., Tarbiat Modares University, Tehran, Iran , Akbari Davood daakbari@modares.ac.ir Asstistant Professor, Faculty of Mechanical Eng., Tarbiat Modares University, Tehran, Iran , Farahani Mohammad Reza mrfarahani@ut.ac.ir Associated Professor, Faculty of Mechanical Eng., Tehran University, Tehran, Iran , Faraji Kalajahi Pouya p.farajikalajahi@modares.ac.ir Ph.D. Student, Faculty of Mechanical Eng., Tarbiat Modares University, Tehran, Iran
كليدواژه :
active thermography , gas turbine blade , water vapor , ceramic , residual
چكيده فارسي :
Thermography is one of the growing non-destructive testing (NDT) methods, which is used in various fields and industries such as energy audit, inspection of rotary machines, aerospace, oil and gas industries. Recently application of thermography by incorporation of external energy source which is called active thermography has been developed to detect various defects such as cracks, delamination and moisture. In this study non-destructive testing of a gas turbine blade by active thermography was investigated. Water vapor was used as external energy source. Experimental tests are accomplished in three different pressures. Thermal images were obtained in five equal time intervals. Results showed good capability of this method in detection of ceramic-residual defect.
