Nondestructive indication of fatigue damage and residual lifetime in ferromagnetic construction materials

0432643 - FZÚ 2015 RIV GB eng J - Článek v odborném periodiku
Tomáš, Ivan - Kovářík, O. - Vértesy, G. - Kadlecová, Jana
Nondestructive indication of fatigue damage and residual lifetime in ferromagnetic construction materials.
Measurement Science and Technology. Roč. 25, č. 6 (2014), "065601-1"-"065601-10". ISSN 0957-0233. E-ISSN 1361-6501.
[International Symposium on Measurement Technology and Intelligent Instruments /11./ (ISMTII). Aachen, 01.07.2013-03.07.2013]
Grant CEP: GA ČR(CZ) GAP108/12/1872
Institucionální podpora: RVO:68378271
Klíčová slova: fatigue * residual lifetime * magnetic nondestructive evaluation * ferromagnetic construction materials
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.433, rok: 2014

A new revolutionary attitude toward investigation of fatigue damage in cyclically loaded steel samples is reported. The measurement is based on the method of magnetic adaptive testing, which—in contrast to traditional magnetic hysteresis investigations—picks up the relevant information from systematic measurement and evaluation of whole minor magnetic hysteresis loops and their derivatives. Satisfactory correlations between nondestructively measured magnetic descriptors and actual lifetime of the fatigued material were found. The presented method is able to serve as a powerful tool for indication of changes, which occur in the structure of the inspected objects during their industrial service lifetime, as long as they are manufactured from ferromagnetic materials.
Trvalý link: http://hdl.handle.net/11104/0237024