Results 21 to 30 of about 5,699,370 (297)

Machine-Learning-Based Composition Analysis of the Stability of V–Cr–Ti Alloys

Journal of Nuclear Engineering, 2023
Machine learning methods allow the prediction of material properties, potentially using only the elemental composition of a molecule or compound, without the knowledge of molecular or crystalline structures.
Katsuaki Tanabe
doaj   +1 more source

Studies of the formation and distribution of cracks and various defects on the heated tungsten plate surface during pulsed plasma flux impact

Nuclear Materials and Energy, 2023
In this work, cracking of the surface of a tungsten plate was studied using a PW-7 pulsed plasma accelerator. The surface of the tungsten plate was exposed at an energy density and plasma flux duration of 1.1 MJ/m2 and 200 μs, respectively.
M.K. Dosbolayev, A.B. Tazhen, A.N. Kholmirzayev, Y.A. Ussenov, T.S. Ramazanov   +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

Simulation of seismic waves at the earth's crust (brittle–ductile transition) based on the Burgers model [PDF]

Solid Earth, 2014
The earth's crust presents two dissimilar rheological behaviors depending on the in situ stress-temperature conditions. The upper, cooler part is brittle, while deeper zones are ductile.
J. M. Carcione, F. Poletto, B. Farina, A. Craglietto   +3 more
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

Surface imaging of metallic material fractures using optical coherence tomography [PDF]

, 2014
We demonstrate the capability of optical coherence tomography (OCT) to perform topography of metallic surfaces after being subjected to ductile or brittle fracturing.
Demian, D., Hutiu, G., Bradu, Adrian, Podoleanu, Adrian G.H., Duma, V.F.   +4 more
core   +1 more source

Tensile behavior, microstructural evolution, and deformation mechanisms of a high Nb-TiAl alloy additively manufactured by electron beam melting

Materials & Design, 2023
To evaluate the tensile behavior, microstructural evolution, and deformation mechanisms of Ti-45Al-8Nb alloy additively manufactured by electron beam melting, uniaxial tensile experiments were performed at a constant strain rate of 2.5 × 10−4 s−1 at ...
Hong Zhang, Dong Lu, Yubing Pei, Tan Chen, Tongfei Zou, Tianjian Wang, Xiaoyan Wang, Yongjie Liu, Qingyuan Wang   +8 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

Hump on upper shelf of ductile—brittle transition temperature curve of a plain carbon steel [PDF]

Materials Science and Technology, 2011
The ductile—brittle transition temperature (DBTT) in a plain carbon steel has been studied in a series of Charpy V notch samples. Both non-standard and standard samples were used in the as drawn, normalised and annealed conditions. In all cases, a hump was recorded on the upper shelf of the DBTT.
Rourke, K., Ebrahim, M., Luo, Quanshun, Wilson, E A   +3 more
openaire   +2 more sources

Brittle-to-ductile transition in high temperature pre-stretched polycarbonate

, 2022
The brittle-to-ductile transition is investigated in polycarbonate (PC) after different types of thermomechanical treatment. In addition to the stress versus strain curves in uniaxial stretching to fracture of the original, preheated, shape recovered and
Wang, Changchun, Huang, Wei Min, Pek, Jia Xi, Wu, Xuelian   +3 more
core   +1 more source