Results 1 to 10 of about 11,604 (161)

Bonding and fractographic characterization of universal adhesives applied to dentin in multimode strategies: an in vitro study [PDF]

Restorative Dentistry & Endodontics
Objectives Universal adhesives (UAs) are marketed as versatile systems for both self-etch (SE) and total-etch (TE) modes. While their bond strength has been widely investigated, evidence linking fracture characteristics to bonding performance remains ...
Samaa M. Morsy, Rim Bourgi, Louis Hardan, Carlos Enrique Cuevas-Suárez, Naji Kharouf, Ahmed A. Holiel   +5 more
doaj   +2 more sources

Analysis of fracture mode transformation mechanism and mechanical model of rock strata with different thicknesses

Meitan xuebao, 2023
The deformation, fracture, and movement mode of rock strata are greatly related to underground pressure, surface subsidence, etc. The fracture modes of the thin rock stratum and thick rock stratum are significantly different.
Jianping ZUO, Meilu YU, Yunjiang SUN, Genshui WU   +3 more
doaj   +1 more source

Fracture resistance of shell-steel reactor steel with mixed deformation modes for justification of extension of nuclear power plants lifetime

Trudy Odesskogo Politehničeskogo Universiteta, 2017
Preliminary thermomechanical loading promotes increase of resistance to brittle fracture of heat-resistant steels with fractures and is the fundamental basis of the perspective method of increasing the resource for ensuring safe operation of power ...
Pokrovsky Volodymyr V., Sydiachenko Vyacheslav G. , Ezhov Vitaliy M.   +2 more
doaj   +7 more sources

Designing a simple and suitable laboratory test specimen for investigating the general mixed mode I/II/III fracture problem

Materials & Design, 2023
A novel test specimen was designed for experimental investigations of pure and mixed mode fracture. This novel test configuration is called “modified edge notched disc bend” (M-ENDB) specimen.
M.R.M. Aliha, H. G. Kouchaki, Pegah Jafari Haghighatpour   +2 more
doaj   +1 more source

Investigation on the Feasibility of Different Semicircular Bend Methods for Asphalt Concrete

Advances in Materials Science and Engineering, 2022
Cracking of asphalt pavement is mostly caused by the mixed fracture of asphalt concrete. Determining a simple, repeatable, and accurate method is necessary for evaluating the fracture resistance of asphalt concrete.
Xijie An, Yangpeng Zhang, Lili Li, Qinglin Guo   +3 more
doaj   +1 more source

Injection Rate-Dependent Deflecting Propagation Rule of Hydraulic Fracture: Insights from the Rate-Dependent Fracture Process Zone of Mixed-Mode (I-II) Fracturing

Geofluids, 2021
Mixed-mode (I-II) fracturing is a prominent mechanical characteristic of hydraulic fracture (HF) deflecting propagation. At present, understanding the effect of injection rates on HF deflecting propagation remains challenging and restricts the control of
Yuekun Xing, Bingxiang Huang
doaj   +1 more source

Mixed mode I/II/III fracture assessment of PMMA using a new test fixture [PDF]

MATEC Web of Conferences, 2019
Brittle and quasi-brittle fracture has been recognized as the main failure mechanism in various structural components. Due to complexity of the components’ geometry and loading condition, a combination of tensile, in-plane shear and out of plane shear ...
Razavi Seyed Mohammad Javad, Lie Hokstad Haakon, Berto Filippo   +2 more
doaj   +1 more source

Analysis of Hydraulic Fracture Propagation Using a Mixed Mode and a Uniaxial Strain Model considering Geomechanical Properties in a Naturally Fractured Shale Reservoir

Geofluids, 2020
This study proposes a hydraulic fracture propagation model with a mixed mode comprising opening and sliding modes to describe a complex fracture network in a naturally fractured shale gas formation.
Youngho Jang, Gayoung Park, Seoyoon Kwon, Baehyun Min   +3 more
doaj   +1 more source

The notch effect on fracture of polyurethane materials [PDF]

Fracture and Structural Integrity, 2014
This paper investigates the fracture properties and notch effect of PUR materials with four different densities. The asymmetric semi-circular bend specimen was adapted to perform mixed mode fracture toughness tests.
T. Voiconi, R. Negru, E. Linul, L. Marsavina, H. Filipescu   +4 more
doaj   +2 more sources

Glass/epoxy fiber orientation effects on translaminar fracture toughness under Mixed mode(I/II) load using FPB specimen

Fracture and Structural Integrity, 2020
To study glass/epoxy fiber orientation effects on translaminar fracture toughness under Mixed mode(I/II) load using asymmetric Four Point Bend specimen.
Abilash Desai, C. M. Sharanaprabhu, S. K. Kudari   +2 more
doaj   +1 more source