Blog on imechanica

In blog 16 we discuss the paper "An improved definition for mode I and mode II crack problems" by M.R. Ayatollahi, M. Zakeri in Engineering Fracture Mechanics 175 (2017) 235–246. It is proposed that pure mode I and pure mode II are defined as the full solution without the omitted stress intensity factor. The previously accepted definition of pure mode I and II is strictly symmetric stresses respectively strictly antisymmetric stresses. A consequence of the latter is according to the authors that frequent mistakes are made, particularly in analyses of mode II and a present T-stress. The discussion in the blog is about the power series expansion for the stresses with the strongest singularity r^-1/2. The assumptions allowing truncation of the expansion to only powers ≥-1/2 seems to contradicting the statement that the T stress influences the state of the crack tip. Contributions to the discussion are very much appreciated.

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Belgrade, Serbia
26–31. August 2018


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TC24 Meeting

25-26 september 2017
Wittenberge, Germany

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TC5 Meeting

25-27 september 2017
Saint-Petersbourg, Russia

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TC8 Meeting

15-16 January, 2018.
Paris, France.

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Procedia Structural Integrity

Volume 5 is on line!
Procedia Structural Integrity is an open access product focusing entirely on publishing full sets of conference proceedings, enabling fast, world-wide dissemination so that conference delegates can publish their papers in a dedicated online issue on ScienceDirect.

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ESIS Technical Committees: NEW SERVICE

For each Technical Committee, a shared Google Drive folder will be activated. Filling the FORM and joining the TCs (one or more, it doesn't matter!), you will be able to share your publications (in the pre-print format), giving them more evidence, and you will be always updated about the papers published by the other TC members on the topics of your interest (and, obviously, about the TC activities).
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ESIS has been approved for Google Apps for Nonprofits. The G Suite (basic version) has been activated for all the ESIS members (from 2016 onwards) and soon they will receive the credentials completely free of charge (the normal cost of this service is 50 USD per user/year).
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Other Events

- September 19-22, 2017. Third International Symposium on Fatigue Design and Materials Defects, Lecco, Italy.LINK.
- November 29-30, 2017. Fatigue Design 2017. Senlis, France. LINK.
- June 4 - 6, 2018. IGF Workshop. Fracture and Structural Integrity: ten years of "Frattura ed integrità Strutturale". Cassino, Italy (link soon available in
- September 19-21, 2018. 6th International Conference on Crack Paths (CP 2018). Verona, Italy. LINK
- March 30 - April 3, 2020. VAL4, 4th International Conference on Material and Component Performance under Variable Amplitude Loading, Darmstad, Germany. First Announcement.

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