✦ LIBER ✦

Crack nucleation sensitivity analysis

✍ Scribed by N. Van Goethem; A. A. Novotny

Book ID: 102511387
Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 292 KB
Volume: 33
Category: Article
ISSN: 0170-4214
DOI: 10.1002/mma.1313

No coin nor oath required. For personal study only.

✦ Synopsis

A simple analytical expression for crack nucleation sensitivity analysis is proposed relying on the concept of topological derivative and applied within a two-dimensional linear elastic fracture mechanics theory (LEFM). In particular, the topological asymptotic expansion of the total potential energy together with a Griffith-type energy of an elastic cracked body is calculated. As a main result, we derive a crack nucleation criterion based on the topological derivative and a criterion for determining the direction of crack growth based on the topological gradient. The proposed methodology leads to an axiomatic approach of crack nucleation sensitivity analysis.

📜 SIMILAR VOLUMES

Study of fatigue crack nucleation proces

Study of fatigue crack nucleation processes by crystalline FE analysis

✍ Naoki Osawa; Yasumitsu Tomita; Kiyoshi Hashimoto 📂 Article 📅 2003 🏛 Springer 🌐 English ⚖ 672 KB

Fatigue crack nucleation at interfaces

✍ H. Vehoff; A. Nykyforchyn; R. Metz 📂 Article 📅 2004 🏛 Elsevier Science 🌐 English ⚖ 379 KB

Fatigue cracks nucleation on steel, acou

Fatigue cracks nucleation on steel, acoustic emission and fractal analysis

✍ M.E. Biancolini; C. Brutti; G. Paparo; A. Zanini 📂 Article 📅 2006 🏛 Elsevier Science 🌐 English ⚖ 275 KB

In this paper, a new acoustic emission (AE) diagnostic technique, for the study of fatigue cracks nucleation and propagation on steel, was investigated. Using the fractal analysis, and the box-counting method (BCM) in particular, it is possible to characterize the spatial distribution of the prime A

Void nucleation by inclusion cracking

✍ M. N. Shabrov; C. L. Briant; A. Needleman; S. Kim; E. Sylven; D. H. Sherman; L. 📂 Article 📅 2004 🏛 The Minerals, Metals & Materials Society 🌐 English ⚖ 565 KB

On crack extension sensitivity

✍ R. L. Carlson; A. Saxena 📂 Article 📅 1988 🏛 Springer Netherlands 🌐 English ⚖ 246 KB

Twin boundaries as crack nucleation site

Twin boundaries as crack nucleation sites

✍ C. Blochwitz; W. Tirschler 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 429 KB

## Abstract Coherent twin boundaries (TBs) in f.c.c. metals are considered to have low energy. Nevertheless, even TBs are preferred sites for crack nucleation in materials loaded at very small alternating plastic strain amplitudes (high cycle fatigue). In the present paper, the mechanism of short c