Results 1 to 10 of about 6,832 (262)

Discrete Element Analysis of Ice-Induced Vibrations of Offshore Wind Turbines in Level Ice

Journal of Marine Science and Engineering, 2023
Self-excited vibrations of offshore structures interacting with sea ice, characterized by low frequency and high amplitudes, pose significant hazards to offshore wind turbines (OWTs) in cold seas. This study employs the discrete element method (DEM) with
Xue Long, Lu Liu, Shunying Ji
doaj   +1 more source

EXPERIMENTAL INVESTIGATION OF THE FAILURE BEHAVIOUR OF POLYPROPYLENE COMPOUNDS FOR INSTRUMENTED PUNCTURE TESTS

Acta Polytechnica CTU Proceedings, 2018
Instrumented puncture tests according to ISO 6603-2 and ASTMD3763 were executed for five different Polypropylene compounds (talcum-, glass fibre- and elastomer modified) with specimen thicknesses ranging from 1mm to 4 mm.
Florian Kiehas, Anna Kalteis, Michael Jerabek, Zoltán Major   +3 more
doaj   +1 more source

Ductile-to-brittle transition behavior of X52 line pipe steel at low temperatures and its implications for crack arrest in CO2 pipelines

管道保护
During CO2 leakage, the Joule-Thomson effect and operational factors such as throttling and venting can cause the local temperature of the pipeline to drop abruptly to -78.5 ℃, significantly increasing the risk of brittle fracture.
Yi ZHANG, Lei SHI, Yi SHUAI, Liguo ZHOU, Cong TANG   +4 more
doaj   +1 more source

Some Aspects of Structural Modeling of Damage Accumulation and Fracture Processes in Metal Structures at Low Temperature

Modelling and Simulation in Engineering, 2016
The problem of brittle fracture of structures at low temperature conditions connected to damage accumulation and ductile-brittle transition in metals. The data for locomotive tire contact impact fatigue and spalling are presented.
Valeriy Lepov, Albert Grigoriev, Valentina Achikasova, Kyunna Lepova   +3 more
doaj   +1 more source

Ductile-to-Brittle Transition of Steel Due to Dynamic Loading

Metals
The transition from ductile to brittle for metals is usually encountered during fast machining operations, in low-temperature environments, and in all situations involving very high strain rates.
Gianmario Riganti, Ezio Cadoni
doaj   +1 more source

Porosity evolution at the brittle-ductile transition in the continental crust: Implications for deep hydro-geothermal circulation

Scientific Reports, 2017
Recently, projects have been proposed to engineer deep geothermal reservoirs in the ductile crust. To examine their feasibility, we performed high-temperature (up to 1000 °C), high-pressure (130 MPa) triaxial experiments on granite (initially-intact and ...
M. Violay, M. J. Heap, M. Acosta, C. Madonna   +3 more
doaj   +1 more source

Toughness by design: multi-scale interpenetrating lattices with size-enhanced fracture resistance

npj Metamaterials
Architecture has long been used as a tool to enhance material toughness, but despite extensive research dedicated to studying toughening mechanisms, the role of feature size remains poorly understood.
Abdulaziz O. Alrashed, Zainab S. Patel, Kush Dwivedi, Benjamin C. White, Bryan Kaehr, Brad L. Boyce, Lucas R. Meza   +6 more
doaj   +1 more source

Finite disorder critical point in ductile-to-brittle transition in amorphous solids with aspherical impurities

Communications Physics
Enhancing the mechanical strength and stability of amorphous solids is crucial for material design, with microalloying being a common yet poorly understood method.
Anoop Mutneja, Bhanu Prasad Bhowmik, Smarajit Karmakar   +2 more
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Relative mobility of screw versus edge dislocations controls the ductile-to-brittle transition in metals. [PDF]

Proc Natl Acad Sci U S A, 2021
Lu Y, Zhang YH, Ma E, Han WZ.
europepmc   +1 more source

Ductile-to-Brittle Transition and Brittle Fracture Stress of Ultrafine-Grained Low-Carbon Steel. [PDF]

Materials (Basel), 2021
Inoue T, Qiu H, Ueji R, Kimura Y.
europepmc   +1 more source