Mixed mode (I plus II) fatigue crack growth of long term operating bridge steel

• Type: Article in International Conference Proceedings Book
• Date: 2016

Authors

G. Lesiuk (Author) Other; P. Kucharski (Author) Other; José Correia (Author) FEUP; Abilio M P De Jesus (Author) FEUP; C. Rebelo (Author) Other; L. Simões da Silva (Author) Other

Conference proceedings International

Title: XVIII INTERNATIONAL COLLOQUIUM ON MECHANICAL FATIGUE OF METALS (ICMFM XVIII)

Pages: 262-269

18th International Colloquium on Mechanical Fatigue of Metals (ICMFM)

Gijon, SPAIN, SEP 05-07, 2016

Indexing

ISI Web of Knowledge - 8 Citations

Scopus - 17 Citations

Other information

Authenticus ID: P-00M-7ZK

DOI: 10.1016/j.proeng.2016.08.889

Abstract (EN): The structural components from structures such as bridge members are subjected to a long operating period of time. The problem of fatigue cracks is more interesting in existing bridge structures with existing cracks. In case of the structures erected at the turn of the 19th and 20th centuries, the cracks are natural elements of the old steel metallic structures. The uniaxial fatigue crack growth description lead us often to significant errors in predicting of a residual lifetime. As a good example, it can be a residual lifetime of the riveted joints in such a type of structures. On the other hand, the 19th century structures were erected with puddled iron or low carbon mild rimmed steel. The experimental results [1,2] obtained by authors, have shown that the fatigue cracks grow much faster than its modern equivalent. This phenomenon is supported by microstructural degradation processes [2]. In this paper some examples of degenerated microstructures have been presented. In order to fill a lack in experimental data in the literature, the results of a mixed mode (I+II) fatigue crack growth have been presented and discussed within the background of Fracture Mechanics models. All the results have been implemented into the Abaqus environment. (C) 2016 The Authors. Published by Elsevier Ltd.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8