Results 1 to 10 of about 4,865,858 (209)

Effect of Different Post Materials and Adaptability on Fracture Resistance and Fracture Mode in Human Endodontically Treated Teeth. [PDF]

open access: yesInt J Dent, 2022
Objective. To investigate the effect of different post materials and adaptability on fracture resistance and fracture mode of endodontically treated teeth. Materials and Methods. Sixty extracted human mandibular premolars were selected and divided into 6
Bhaktikamala A   +2 more
europepmc   +2 more sources

Fracture mode classification by texture analysis of fracture surface scanning electron microscope images

open access: yesScience and Technology of Advanced Materials: Methods, 2022
Fractography is a practical method of determining the cause of a mechanical-structure failure. Accurate decisions regarding fracture-mode classification require experience and knowledge, which may be difficult to share.
Akihiro Endo   +4 more
doaj   +2 more sources

The Transition from Strain Softening to Strain Hardening in Metallic Glasses [PDF]

open access: yesNanomaterials
Despite their excellent mechanical properties, metallic glasses (MGs) are significantly hindered by poor plasticity and toughness, which are essential for structural applications.
Yongwei Wang, Guangping Zheng, Mo Li
doaj   +2 more sources

A review on mixed mode fracture of metals

open access: yesEngineering Fracture Mechanics, 2020
Mode I fracture mechanics has been relatively mature but mixed mode fracture mechanics continues to present challenges, in particular for ductile materials under multiaxial stresses.
Chun-Qing Li   +2 more
exaly   +2 more sources

Analysis of Mixed-Mode I/II/III Fracture Toughness Based on a Three-Point Bending Sandstone Specimen with an Inclined Crack

open access: yesApplied Sciences, 2021
The crack-propagation form may appear as an arbitrary mixed-mode fracture in an engineering structure due to an irregular internal crack. It is of great significance to research the mixed-mode fracture of materials with cracks.
Xin Pan   +4 more
doaj   +1 more source

A new inverse analysis approach for predicting the fracture mode I parameters of fibre reinforced concrete

open access: yesEngineering Fracture Mechanics, 2021
This paper describes the development of a new inverse analysis approach to derive the fracture mode I parameters of fibre reinforced concrete (FRC) by using the experimental data obtained from three-point notched beam bending tests (3PNBBT) and round ...
L. M. Matos   +3 more
semanticscholar   +1 more source

Effects of heat treatment on microstructure and mechanical properties of Mg-6Zn-4Sm-0.4Zr alloy [PDF]

open access: yesChina Foundry, 2018
A new rare earth magnesium alloy (Mg-6Zn-4Sm-0.4Zr, wt.%) was prepared by permanent mould casting. The microstructure and mechanical properties of the alloy sample in as-cast and various heat treatment situations were characterized with an optical ...
*Xiao-feng Huang, Yu Zhang, Feng Guo
doaj   +1 more source

Dynamic Tension Deformation of Rare-Earth Containing Mg-1.9Mn-0.3Ce Alloy Sheet along the Rolling Direction at Various Temperatures

open access: yesMetals, 2020
The tensile properties of rare-earth containing Mg-1.9Mn-0.3Ce alloy sheet along the rolling direction were experimentally investigated within the strain rate and temperature ranges of 0.001–1300 s−1 and 213–488 K. The obtained stress-strain responses of
Jin Wang, Yang Wang, Ziran Li
doaj   +1 more source

Numerical study on the fracture characteristics and failure mode of hard coal under coupled static and dynamic loads [PDF]

open access: yesE3S Web of Conferences, 2020
It has been well accepted by mining researchers that coal tends to undergo abrupt fracture under the coupling effect of dynamic and static loads. Hence, the study of influence of coupled static and dynamic loads on coal failure behaviour is meaningful ...
Tan Lihai   +3 more
doaj   +1 more source

The Effect of Temperature and Heating–Cooling Cycles on Mode I, Mode II and Mixed-Mode I-II Fracture Toughness of Sandstone [PDF]

open access: yesMuhandisī-i manābi̒-i ma̒danī, 2021
In the case of explosions and fires, the rocks undergo a cycle of heating and cooling. For that, first, they are exposed to considerable heat and then cooled after extinguishing the fire.
Sh. Latifi, M. Hosseini, M. Mahdikhani
doaj   +1 more source

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