Results 31 to 40 of about 6,826,918 (267)
Buildings, 2023 Saturated concrete is significantly different from dry concrete in fracture mechanical properties. Using the wedge-splitting tensile method to research the rule of change in moisture content, double-K fracture toughness and fracture energy of three ...
Guohui Zhang +4 more
doaj +1 more source
Combined damaged elasticity and creep modeling of ceramics with wedge splitting tests
Ceramics International, 2021 Abstract During the crack propagation in common refractory ceramics at high temperatures, creep may occur in the wake of a process zone and in front of a crack tip. To account for this phenomenon, an integrated material constitutive model was developed by combining the mechanical behavior following isotropic damaged elasticity concept and Norton ...
Samadi, S., Jin, S., Harmuth, H.
openaire +1 more source
Advances in Materials Science and Engineering, 2022 In order to study the fracture behavior of hydraulic concrete, wedge splitting tests are performed on notched cubic concrete specimens with different crack-depth ratios (0.3, 0.4, and 0.5).
Yingjie Ning +4 more
doaj +1 more source
Experimental Study on High-Energy Gas Fracturing Artificial Coal
Applied Sciences, 2022 The low permeability of coal seams has always been the main bottleneck restricting coalbed gas drainage. To improve the permeability of a coal seam, a high-energy gas fracturing technology is proposed.
Junjun Li +4 more
doaj +1 more source
Analysis of accuracy of Williams series approximation of stress field in cracked body – influence of area of interest around crack-tip on multi-parameter regression performance [PDF]
Fracture and Structural Integrity, 2017 A study on the accuracy of an approximation of the stress field in a cracked body is presented. Crack-tip stress tensor is expressed using the linear elastic fracture mechanics (LEFM) theory in this work, more precisely via its multi-parameter ...
J. Sobek, P. Frantík, V. Veselý
doaj +1 more source
STUDY ON REINFORCEMENT OF SPLITTING TIMBER BY DRIVING WEDGE TEST
Journal of Structural and Construction Engineering (Transactions of AIJ), 2008 A method of driving wedge test was proposed in order to qualify the effect of reinforcement on splitting strength of timber. The wedge was quasi-statically driven into timber in its longitudinal direction by structural testing machine, during which the load and displacement were measured until splitting failure.
openaire +3 more sources
MATEC Web of Conferences, 2018 Superabsorbent polymers (SAP) addition as an internal curing (IC) agent in concrete is an approach being adopted for the mitigation of autogenous shrinkage.
Olawuyi Babatunde James +1 more
doaj +1 more source
Analysis of wedge splitting test on refractory castable via integrated DIC [PDF]
Journal of the European Ceramic Society, 2016 One of the key mechanical properties of refractories is their toughness. The latter can be evaluated via wedge splitting tests. One such test is analyzed herein with an integrated approach to digital image correlation. The position of the crack tip, stress intensity factors and T-stress are estimated on two faces of the tested sample made of a ...
Vargas, Rafael +4 more
openaire +1 more source
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source