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Fracture toughness of thermoelectric materials [PDF]

open access: yesMaterials Science and Engineering Reports, 2021
Abstract The engineering applications of thermoelectric (TE) devices require TE materials possessing high TE performance and robust mechanical properties. Research on thermal and electrical transport properties of TE materials has made significant progress during the last two decades, developing TE materials on the threshold of commercial ...
Guodong Li, Qi An, Bo Duan
exaly   +4 more sources

Concrete double-K fracture toughness and fracture energy influenced by porosity and pore size [PDF]

open access: yesScientific Reports
The diameter and quantity of internal pores in concrete significantly influence its mechanical properties. While existing studies predominantly focus on the influence of pore quantity, this study utilizes pre-fabricated pores made from polystyrene ...
Guohui Zhang   +5 more
doaj   +2 more sources

Logging prediction and evaluation of fracture toughness for the shales in the Longmaxi Formation, Southern Sichuan Basin

open access: yesPetroleum, 2021
The mode-I fracture toughness is of great significance for evaluating the fracturing ability of shale reservoirs. In this study, the mode-I fracture toughness of the shale in the Lower Silurian Longmaxi Formation, Southern Sichuan Basin was determined ...
Jian Xiong   +4 more
doaj   +1 more source

Fracture toughness of graphene [PDF]

open access: yesNature Communications, 2014
Perfect graphene is believed to be the strongest material. However, the useful strength of large-area graphene with engineering relevance is usually determined by its fracture toughness, rather than the intrinsic strength that governs a uniform breaking of atomic bonds in perfect graphene.
Peng, Zhang   +12 more
openaire   +2 more sources

The fracture toughness of eggshell [PDF]

open access: yesActa Biomaterialia, 2016
The shells of avian eggs are very brittle, but how brittle? Fracture toughness, Kc is a standard measure used widely to characterise engineering materials. We devised a novel way to measure Kc and applied it to commercial hens' eggs, obtaining a value of 0.3MPa√m. This value is much lower than previous published values, which we argue are incorrect and
David Taylor   +3 more
openaire   +2 more sources

A Planar-3D Mathematical Model for Studying the Effect of Heterogeneity of Rock Fracture Toughness on Hydraulic Fracture Propagation: Early-Time Solution including the Stage before Propagation

open access: yesMathematics, 2023
Among the studies of the effect of rock’s heterogeneity on hydraulic fracture propagation, very little information on the effects of the heterogeneity of rock’s fracture toughness is available. The objective of the present paper is to develop a planar-3D
Kairui Li   +5 more
doaj   +1 more source

Fracture Diodes: Directional Asymmetry of Fracture Toughness [PDF]

open access: yesPhysical Review Letters, 2021
Toughness describes the ability of a material to resist fracture or crack propagation. It is demonstrated here that fracture toughness of a material can be asymmetric, i.e., the resistance of a medium to a crack propagating from right to left can be significantly different from that to a crack propagating from left to right.
N. R. Brodnik   +6 more
openaire   +4 more sources

Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelines

open access: yesYou-qi chuyun, 2022
In this study, numerical simulation analysis on fracture of girth welds on pipelines with crack defect and small Single Edge Notch Beam(SENB) was performed with the finite element method for accurately characterizing the correlation of apparent fracture ...
Jinxu JIANG   +5 more
doaj   +1 more source

Modeling the effect of temperature and notch root radius on fracture toughness

open access: yesFrontiers in Materials, 2022
In this work, a physics-based analytical model without any fitting parameters for fracture toughness depending on temperature was proposed. The quantitative relationship between fracture toughness, melting point, Young’s modulus, Poisson’s ratio, and ...
Yong Deng   +4 more
doaj   +1 more source

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