Journal ArticleDOI
Recent developments in brittle and quasi-brittle failure assessment of engineering materials by means of local approaches
Filippo Berto,Paolo Lazzarin +1 more
TLDR
In this article, the authors present a review of some local approaches applicable near stress raisers both sharp and blunt V-notches, which has been recently applied to assess the brittle failure of a large number of materials.Abstract:
Brittle failure of components weakened by cracks or sharp and blunt V-notches is a topic of active and continuous research. It is attractive for all researchers who face the problem of fracture of materials under different loading conditions and deals with a large number of applications in different engineering fields, not only with the mechanical one. This topic is significant in all the cases where intrinsic defects of the material or geometrical discontinuities give rise to localized stress concentration which, in brittle materials, may generate a crack leading to catastrophic failure or to a shortening of the assessed structural life. Whereas cracks are viewed as unpleasant entities in most engineering materials, U- and V-notches of different acuities are sometimes deliberately introduced in design and manufacturing of structural components. Dealing with brittle failure of notched components and summarizing some recent experimental results reported in the literature, the main aim of the present contribution is to present a review of some local approaches applicable near stress raisers both sharp and blunt. The reviewed criteria allowed the present authors to develop a new approach based on the volume strain energy density (SED), which has been recently applied to assess the brittle failure of a large number of materials. The main features of the SED approach are outlined in the paper and its peculiarities and advantages accurately underlined. Some examples of applications are reported, as well. The present review is based on the authors’ experience over more than 15 years and the contents of their personal library. It is not a dispassionate literature survey.read more
Citations
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Journal ArticleDOI
Metallic glass matrix composites
TL;DR: In this article, the development, fabrication, microstructures, and properties of MGMCs, including the room-temperature, cryogenictemperature and hightemperature mechanical properties upon quasi-static and dynamic loadings are reviewed.
Journal ArticleDOI
Architected cellular materials: A review on their mechanical properties towards fatigue-tolerant design and fabrication
Matteo Benedetti,A. du Plessis,A. du Plessis,Robert O. Ritchie,M. Dallago,Seyed Mohammad Javad Razavi,Filippo Berto +6 more
TL;DR: In this article, the authors discuss the progress to date in the improvement of the fatigue performance of cellular structures manufactured by additive manufacturing, especially metal-based, providing insights and a glimpse to the future for fatigue-tolerant additively manufactured architected cellular materials.
Journal ArticleDOI
Fatigue strength of severely notched specimens made of Ti–6Al–4V under multiaxial loading
TL;DR: In this article, the authors dealt with multiaxial fatigue behavior of severely notched components made of titanium grade 5 alloy (Ti-6Al-4V) under combined Mode I and Mode III loadings, both in phase and out of phase.
Journal ArticleDOI
Application of an average strain energy density criterion to obtain the mixed mode fracture load of granite rock tested with the cracked asymmetric four-point bend specimens
TL;DR: In this article, the authors present a complete set of experimental results on fracture of pre-cracked granite samples under various inplane loading mixities, and predict the fracture loads of the tested rock samples under mixed mode I/II conditions using an energy-based criterion, namely the Average Strain Energy Density (ASED) criterion.
Journal ArticleDOI
Determination of mode III fracture toughness for different materials using a new designed test configuration
TL;DR: In this article, the Edge Notched Disc Bend (ENDB) is proposed for experimental determination of KIIIc, which is a circular disc containing an edge crack created along the disc diameter which is subjected to three-point bend loading.
References
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Journal ArticleDOI
The Phenomena of Rupture and Flow in Solids
TL;DR: In this article, the authors investigated the effect of surface scratches on the mechanical strength of solids, and some general conclusions were reached which appear to have a direct bearing on the problem of rupture, from an engineering standpoint, and also on the larger question of the nature of intermolecular cohesion.
BookDOI
Fracture Mechanics : Fundamentals and Applications
TL;DR: Fracture Mechanics: Fundamentals and Applications, Fourth Edition as discussed by the authors is the most useful and comprehensive guide to fracture mechanics available It has been adopted by more than 150 universities worldwide and used by thousands of engineers and researchers.
Journal ArticleDOI
On the Crack Extension in Plates Under Plane Loading and Transverse Shear
Fazil Erdogan,G.C. Sih +1 more
Book
Fracture and Size Effect in Concrete and Other Quasibrittle Materials
Zdeněk P. Bažant,Jaime Planas +1 more
TL;DR: In this paper, the authors used the Weibull-type approach to measure the effect of size effect on structural strength of a crack and its size effect in terms of the number of cracks and the size of the cracks.
Journal ArticleDOI
Strain-energy-density factor applied to mixed mode crack problems
TL;DR: In this paper, the authors investigated the general problem of crack extension in a combined stress field where a crack can grow in any arbitrary direction with reference to its original position, and showed that the direction of crack growth and fracture toughness for the mixed problem of Mode I and Mode II are governed by the critical value of the strain-energy-density factor.
Related Papers (5)
A finite-volume-energy based approach to predict the static and fatigue behavior of components with sharp V-shaped notches
Paolo Lazzarin,R. Zambardi +1 more
A review of the volume-based strain energy density approach applied to V-notches and welded structures
Filippo Berto,Paolo Lazzarin +1 more
Some Expressions for the Strain Energy in a Finite Volume Surrounding the Root of Blunt V-notches
Paolo Lazzarin,Filippo Berto +1 more