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The interaction of a crack front with a second-phase dispersion
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TLDR
In this paper, it was shown that a crack front increases its length by changing its shape when it interacts with two or more inhomogeneities in a brittle material, and an expression for the fracture energy was obtained.Abstract:
Observations are presented showing that a crack front increases its length by changing its shape when it interacts with two or more inhomogeneities in a brittle material. These observations are presented for both cleavage and conchoidal types of fracture. Based on these observations and the concept that a crack front possesses a line energy, an expression for the fracture energy is obtained. This expression shows that the fracture energy should increase as the distance between the dispersed inhomogeneities is decreased. Using the Griffith fracture criterion, this result is discussed for the case of strengthening a brittle material.read more
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Model analysis of boundary residual stress and its effect on toughness in thin boundary layered yttria-stabilized tetragonal zirconia polycrystalline ceramics
Jianlin Shi,Z. L. Lu,J. K. Guo +2 more
TL;DR: In this paper, the average thermal residual stress in a continuous boundary phase in polycrystalline ceramic composites was calculated with a simple thin boundary layer model, and a criterion for the self-cracking of the boundary phase was derived under a certain assumption.
Journal ArticleDOI
The efficiency of various toughening agents in novel phenolic type thermoset resin systems
TL;DR: In this paper, two phenolic type thermosetting resins were investigated regarding the effectiveness of different toughness modifiers derived from different groups such as elastomers, thermoplastics, and core-shell polymers.
Journal ArticleDOI
The influence of POSS type on the properties of PLA
TL;DR: In this paper, the effects of reactive and non-reactive poly(hedral oligomeric silsesquoxane) (POSS) type and their loading level on the mechanical, morphological and thermal properties of PLA composites were investigated for the first time in the literature.
Journal ArticleDOI
Mechanisms of toughening brittle polymers
TL;DR: In this paper, a crack-trapping mechanism was proposed to force the brittle crack to bow around the fibers of a set of well-adhering set of tough fibers.
Journal ArticleDOI
Impact properties of thermoplastic composites
TL;DR: In this article, the excellent properties exhibited by thermoplastic composites at much reduced weight have attracted attention in the development of products in different sectors, such as automotive, medical, and aerospace.
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.
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LXXV. The moving griffith crack
TL;DR: In this article, a straight crack moving through an elastic medium is calculated and the stresses depend on the velocity and reduce to Inglis' solution when the velocity is zero, and the results may be applied to the spicular fracture of glass.
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Fracture Surface Energy of Glass
TL;DR: In this article, the double-cantilever cleavage technique was used to measure the fracture surface energy of six glasses and the results ranged from 3.5 to 5.3 J/m2 depending on the chemical composition of the glass and the temperature of the test.