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APPROXIMATION IN TIME OF THE BEHAVIOR UNDER FATIGUE OF SINGLE LAYER WELDED STRUCTURES USING MATHEMATICAL MODELS

Andrei Dimitrescu, Claudiu Babis, Dan Nitoi, Oana Chivu, Ionut Ghionea

First published: 2017-06-20https://doi.org/10.5593/sgem2017/61/s24.003View metrics

Abstract

Machinery from all industries is subject to aging processes. For economic and time reasons, damage cannot be repaired by replacing worn or damaged parts, but the product must be reconditioned. One of the most used reconditioning technologies in the industry is welding. Reconditioning technologies are credible, when samples are tested standardized. In most cases, welded structures have undergone various types of destructive tests: tension, compression, torsion and fatigue.[1] Since fatigue tests cannot be made during the entire life of the product and are expensive in terms of material consumption and technology, it is necessary to use complex mathematical models to approximate their behavior with an as small as possible error.[2] Our results can generate new life of the product most often outweigh the initial periods because the used technologies in refurbishment have the following advantages: are the latest technology, have lower material and raw material consumption, lower energy consumption and last but not least a lower degree of pollution.

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Publication details

Title
APPROXIMATION IN TIME OF THE BEHAVIOR UNDER FATIGUE OF SINGLE LAYER WELDED STRUCTURES USING MATHEMATICAL MODELS
Authors
Andrei Dimitrescu, Claudiu Babis, Dan Nitoi, Oana Chivu, Ionut Ghionea
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Nano, Bio and Green - Technologies for a Sustainable Future
Publisher
STEF92 Technology
Year
2017
Pages
19-26
SWS Citekey
Dimitrescu2017241926
ISSN
1314-2704
ISBN
978-619-7408-12-6
Language
en
Publication type
Conference Paper
Keywords
References5
  1. Pablo de Greife, Handbook of Reparations, Oxford University Press, USA, 2006;

  2. B.Seyed, Behravesh, Elfaitori Ibrahim, Hamid Jahed, Chapter 14 – Fatigue failure analysis of welded structures: An overview and a case study, Handbook of Materials Failure Analysis with Case Studies from the Chemicals, Concrete and Power Industries, 2016, Pages 355-386;

  3. C. Fischer, W. Fricke, C.M. Rizzo, Review of the fatigue strength of welded joints based on the notch stress intensity factor and SED approaches, International Journal of Fatigue, Volume 84, March 2016, Pages 59-66;

  4. A.Dimitrescu, The Influence of Brazing Temperature on the Metallographic Microstructure of the Bonded Weld, Editura Tg. Jiu, 2013, Pages 103;

  5. Halid Can Yıldırım, Martin Leitner, Gary B. Marquis, Michael Stoschka, Zuheir Barsoum, Application studies for fatigue strength improvement of welded structures by high-frequency mechanical impact (HFMI) treatment, Engineering Structures, Volume 106, 1 January 2016, Pages 422-435;

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