TY  - JOUR
PY  - 2022//
TI  - Thermal method for detecting fatigue cracks in welded steel bridges under random loads
JO  - Transportation research procedia
A1  - Solovyov, Leonid
A1  - Solovyov, Alexandr
A1  - Fedorenko, Vladislav
SP  - 588
EP  - 593
VL  - 61
IS  - 
N2  - The purpose of the study is to use infrared thermography to highway bridges inspection for fatigue deterioration and damage. Laboratory tests of cantilever specimens with stiffeners under cyclic loading under conditions corresponding to the actual operating conditions of the bridge superstructure were carried out. It is shown that the process of metal self-heating makes it possible to predict the appearance of fatigue fractures long before their appearance on the surface. An algorithm for processing thermograms under random loading was developed on the basis of the least squares methods and self-reference lock-in thermography. Studies on bridges in operation have shown the effectiveness of the proposed method.<p />  <p>Language: en</p>
LA  - en
SN  - 2352-1465
UR  - http://dx.doi.org/10.1016/j.trpro.2022.01.095
ID  - ref1
ER  -