Evaluation of Steam Turbine Blades Surface Cracks Detectability by Nondestructive Methods

Autor:	P. Zahrádka, J. Patera, J. Veselá, P. Mareš
Rok vydání:	2020
Předmět:	Surface (mathematics) Radiation Materials science Nuclear Energy and Engineering Steam turbine Metallurgy Ultrasonic testing Corrosion
Zdroj:	Journal of Nuclear Engineering and Radiation Science. 7
ISSN:	2332-8975 2332-8983
Popis:	This article describes methods suitable for crack detection on low pressure steam turbine blades, not including the blade root. These cracks, which are initiated in the corrosion pitting, can cause serious damage to the steam turbine blade leading to its breakaway. Therefore, the detection of these cracks on the early stages of blade fracture is very important. Several methods for detecting of surface cracks (ultrasonic Rayleigh waves, eddy current with flexible array probe, etc.) has been tested on artificial flaws, which were manufactured into turbine blades. The comparison of all these methods is described as well as the evaluation of their advantages and disadvantages. Simulations of ultrasonic testing are also presented in this article.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9eb1ed13f5615f44105bf827c03b6e64 https://doi.org/10.1115/1.4048479 Zobrazit plný text záznamu