Results 11 to 20 of about 149,305 (265)
Debonding and Fracture Behavior of Concrete Specimens Retrofitted by FRP Composite [PDF]
Computational Engineering and Physical Modeling, 2018 The effects of FRP retrofitted concrete specimens with couple of notches on the fracture behavior have been investigated during an experimental and analytical test program in this study.
Hadi Abbaszadeh +2 more
doaj +1 more source
Buildings, 2022 Due to the complex structure and stress distribution of dam galleries, cracks often appear during the construction, operation and maintenance periods of dams.
Xiaofeng Gao +9 more
doaj +1 more source
Energies, 2023 In the last decade, low-quality unconventional oil and gas resources have become the primary source for domestic oil and gas storage and production, and hydraulic fracturing has become a crucial method for modifying unconventional reservoirs.
Zhe Liu +7 more
doaj +1 more source
Energies, 2023 A conventional oil and gas well does not have a natural production capacity, which necessitates a hydraulic fracturing operation. The effectiveness of the fracturing directly impacts the economic benefit of a single well.
Yi Zou +5 more
doaj +1 more source
IEEE Access, 2018 Conventional fracture characterization model for low-permeability tight reservoirs cannot be directly built through data statistical method and simplified strain energy density method under high confining pressures.
Jianwei Feng +3 more
doaj +1 more source
Method for Determining the Fracture Parameters of Fully Graded Dam Concrete
Buildings, 2022 This paper describes a method for determining the initiation and unstable toughness of fully graded concrete of arbitrary specimen size. The method first predicts the initiation and peak loads of concrete specimens of any size, as well as crack length-to-
Xiaofeng Gao +7 more
doaj +1 more source
工程科学学报, 2022 A centrally cracked Brazilian disk (CCBD) specimen subjected to a pair of diametral compressive forces has been widely used to study mixed-mode I and II fractures of brittle and quasi-brittle materials.
Jian LIU +3 more
doaj +1 more source
Wedge-Splitting Test on Carbon-Containing Refractories at High Temperatures
Applied Sciences, 2019 The mode I fracture behavior of ordinary refractory materials is usually tested with the wedge-splitting test. At elevated temperatures, the optical displacement measurement is difficult because of the convection in the furnace and possible reactions of ...
Martin Stückelschweiger +3 more
doaj +1 more source
Comparative study on mechanical properties of concrete for a hydraulic complex project
Shuili Shuiyun Gongcheng Xuebao, 2023 In order to discuss the mechanical properties and fracture characteristics of dam concrete, a three-point bending test of concrete beam was carried out based on two different concrete mix ratios (named C0.48 and C0.43 respectively according to different ...
FAN Xiangqian +4 more
doaj +1 more source
Curved and Layered Structures, 2015 To determine fracture parameters of interfacial cracks in transverse isotropic magnetoelectroelastic composites, a displacement extrapolation formula was derived.
Lei Jun, Sun Pengbo, Bui Tinh Quoc
doaj +1 more source