Modeling of Crack Growth With Dwell Time for Aero-Engine Spectra Loadings in a Ni-Based Superalloy

Autor:	Erik Storgärds, Kjell Simonsson, Sören Sjöström, David Gustafsson, Tomas Månsson
Rok vydání:	2015
Předmět:	Fuel Technology Nuclear Energy and Engineering Mechanical Engineering Energy Engineering and Power Technology Aerospace Engineering
Zdroj:	Journal of Engineering for Gas Turbines and Power. 138
ISSN:	1528-8919 0742-4795
DOI:	10.1115/1.4031155
Popis:	Testing and simulation of aero-engine spectra with dwell times are reported in this paper. The modeling concept used is built on linear elastic fracture mechanics (LEFM) and provides a history-dependent evolution description of dwell damage and its interaction with cyclic load. The simulations have been carried out for three spectra: (1) cyclic loads, (2) combined sustained load and cyclic loads, and (3) slow load ramps and cyclic loads, all for surface cracks at 550 °C for Inconel 718. All simulations show reasonable good agreement with experimental results. Prediction of multiple tests of several batches is also provided to show statistical scatter.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d1baf8bd0c3ea0183a6bbf58023cde07 https://doi.org/10.1115/1.4031155 Zobrazit plný text záznamu