Fracture toughness
Photoelastic stress analysis assisted evaluation of fracture toughness in hydrothermally aged epoxies
... although fracture toughness parameters for brittle plastics are well characterized by the theory [17], and measurable with standardized procedures ...delamination toughness of FRPs ...of ...
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Evaluation of Fracture Toughness of Ultraviolet-Irradiated Polycarbonate Using the Essential Work of Fracture Method
... The fracture analysis for the non-irradiated samples subjected to the EWF fracture toughness test was performed through micrographs, such as the one presented in ...typical fracture surface is ...
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Modelling of the fracture toughness anisotropy in fiber reinforced concrete
... s an example the wedge splitting test [14] will be simulated using proposed approach. The specimen’s size is 202030 cm with initial crack depth equal 15 cm. Previous studies show [15], that due to vibration during ...
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Mechanisms of Fracture Toughness Enhancement in Nanocrystalline Solids
... Now let us consider the effect of disclination configuration, resulting from the cooperative GB migration and sliding, on the fracture toughness of a nanocrystalline solid. To do so, we will use the ...
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Measurement uncertainty of plane-strain fracture toughness K
... plane-strain fracture toughness K IC test, as evidenced in a literature review in Sci- ence Direct and IEEEXplore databases, for works published between 1995 and ...
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Out-of-plane Constraint Based Fracture Toughness
... Abstract Fracture toughness data relevant to the thickness of the particular structure is beneficial to the advanced levels of fitness-for-service ...and fracture experiments on the edge cracked ...
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Veins improve fracture toughness of insect wings.
... A network of longitudinal veins and cross-sectional veins divides the wing-surface into characteristic numerous smaller membrane cells (see Figure 1 and [10]). In locusts, the longitudinal veins are hollow cuticular ...
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Fracture toughness of zirconia ceramic crowns made by feather-edge tooth preparation design
... Background/Aim. Fracture toughness determines functional crown strenght and prevents damages on ceramics during ...about fracture toughness of crowns made by feather-edge prepara- ...on ...
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Microstructure and Mechanical Properties of Two Api Steels for Iron Ore Pipelines
... The fracture toughness test results reveal a similar behavior for the two steels. Table 4 shows the results obtained. Figure 4 illustrates typical load (P) versus displacement (COD) curves from CTOD tests ...
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Mechanical characterization of rock splitting planes in granitic rocks
... that fracture toughness can be more easily related to the prediction, through analytical/numerical models, of the cutting processes in rocks as compared to other mechanical properties such as ...
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Mat. Res. vol.13 número4
... the fracture toughness results for specimens from steel B ...the fracture toughness value in plane strain state condition, K IC ...for toughness for these tested ...
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Effect of flexural crack on plain concrete beam failure mechanism A numerical simulation
... beam, fracture resistance and toughness of the beam are ...the fracture resistance and the stress was distributed according to length of ...material’s fracture resistance is important in crack ...
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J. Braz. Chem. Soc. vol.17 número3
... energy, fracture toughness and tensile modulus mechanical properties show the same profile with respect to OG content, in the sense that they exhibit maxima around 70 ...
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Mechanical properties of ultra-high pressure sintered sphene (CaTiSiO5)
... The investigation of nano-mechanical properties of sphene sintered under ultra-high pressures in the order of 4 GPa is done using indentation techniques. An indentation hardness of 6.6 GPa and reduced elastic modulus of ...
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Mat. Res. vol.14 número3
... sand was substantially high for both binders, epoxy and unsaturated polyester from recycled PET when compared to fresh sand specimens. In fact, the increment of polymer concrete resistance to crack initiation for epoxy ...
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Mat. Res. vol.7 número3
... by the microstructure’s grain morphology. As the sintering time increased, the grain morphology became more equiaxial, with a smaller aspect ratio, leading to less pro- nounced effects of crack-deflection and ...
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Braz. Dent. J. vol.27 número5
... measuring fracture toughness before and after the ultimate firing ...apparent fracture toughness was measured by the Vickers hardness indentation technique (21), as described ...the ...
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Interlaminar fracture in woven carbon/epoxy laminates
... mpacts at low velocity are the main cause of in-service delaminations, which are very dangerous because they are not easily detected visually [1, 2] and they can affect significantly the residual properties and ...
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J. Braz. Chem. Soc. vol.17 número5
... It is known that for conventional epoxy resin, such as DGEBA, the highest cross-link densities are obtained at stoichiometries where two epoxy ring equivalents are mixed with one amine group equivalent (corresponding to ...
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