شماره ركورد كنفرانس :
4811
عنوان مقاله :
Estimation of Crack Depth in Metal Components
پديدآورندگان :
Babnadi Reza reza_bab@iust.ac.ir Master of Science Railway Engineering School of Iran University Science and Technology; , Hosseini Tehrani Parisa hosseini_t@iust.ac.ir Associated Professor Railway Engineering School of Iran University Science and Technology; , Nazari Amin nazari_amin@iust.ac.ir PHD Student Railway Engineering School of Iran University Science and Technology; , Ghazanfari Mohsen ghazanfarimohsen@iust.ac.ir PHD Student Railway Engineering School of Iran University Science and Technology;
كليدواژه :
crack detection , nondestructive tests , thermography
عنوان كنفرانس :
ششمين كنفرانس بين المللي پيشرفت هاي اخير در مهندسي راه آهن
چكيده فارسي :
To prevent damages, reduction of maintenance cost and improving the safety, defects detection is an essential issue. One of the most important defects is crack which may cause failure in structures. Owning knowledge about the cracks are important to predict and evaluation of time and position of failure and its consequences. Recently using nondestructive tests (NDT) for cracks assessment has been common and one of the recent method is thermography. Heating the specimen and monitoring the result of temperature distribution by IR thermography camera would result a higher temperature gradient in crack surfaces. The cracks depth may detect by measurement equipment and correlate to temperature variation results. A relation between these temperature gradient and crack depth has been derived and compared to characterize cracks. The estimated model may be used in similar conditions by good accuracy.
