TY - JOUR AU - Berto, F. PY - 2015/09/28 Y2 - 2024/03/28 TI - Local approaches for the fracture assessment of notched components: the research work developed by Professor Paolo Lazzarin JF - Frattura ed Integrità Strutturale JA - Fra&IntStrut VL - 9 IS - 34 SE - Miscellanea DO - 10.3221/IGF-ESIS.34.02 UR - https://www.fracturae.com/index.php/fis/article/view/1553 SP - AB - <p>Brittle failure of components weakened by cracks or sharp and blunt V-notches is a topic of active<br>and continuous research. It is attractive for all researchers who face the problem of fracture of materials under<br>different loading conditions and deals with a large number of applications in different engineering fields, not<br>only with the mechanical one. This topic is significant in all the cases where intrinsic defects of the material or<br>geometrical discontinuities give rise to localized stress concentration which, in brittle materials, may generate a<br>crack leading to catastrophic failure or to a shortening of the assessed structural life. Whereas cracks are viewed<br>as unpleasant entities in most engineering materials, U- and V-notches of different acuities are sometimes<br>deliberately introduced in design and manufacturing of structural components.<br>Dealing with brittle failure of notched components and summarising some recent experimental results reported<br>in the literature, the main aim of the present contribution is to present a review of the research work developed<br>by Professor Paolo Lazzarin. The approach based on the volume strain energy density (SED), which has been<br>recently applied to assess the brittle failure of a large number of materials. The main features of the SED<br>approach are outlined in the paper and its peculiarities and advantages accurately underlined. Some examples of<br>applications are reported, as well. The present contribution is based on the author’s experience over about 15<br>years and the contents of his personal library. This work is in honor and memory of Prof. Paolo Lazzarin who<br>suddenly passed away in September 2014.</p> ER -