Results 41 to 50 of about 9,560 (208)

Brittle-to-ductile transition in polycrystalline NiAl

open access: yesActa Materialia, 1997
Abstract The brittle-to-ductile transition (BDT) of stoichiometric NiAl and Ni 49Al 1Ti alloys was investigated using tensile and fracture toughness testing methods. The BDT in these alloys was found to be associated with a sharp drop in strain hardening rate, which causes the general yielding and plastic instability (necking) to precede unstable ...
Materials Science and Engineering Department, University of Florida, Gainesville, FL 32611, U.S.A. ( host institution )   +2 more
openaire   +2 more sources

Brittle-to-ductile transition of PLA induced by macromolecular orientation

open access: yeseXPRESS Polymer Letters, 2020
This work deals with the influence of biaxial orientation on the mechanical behavior of Polylactide (PLA) films. Comparisons between a crystallizable grade and a non-crystallizable one have been made in order to separate the effect of macromolecular ...
S. Xu   +4 more
doaj   +1 more source

Permeability and seismic velocity anisotropy across a ductile–brittle fault zone in crystalline rock [PDF]

open access: yesSolid Earth, 2018
This study characterizes the elastic and fluid flow properties systematically across a ductile–brittle fault zone in crystalline rock at the Grimsel Test Site underground research laboratory.
Q. C. Wenning   +3 more
doaj   +1 more source

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

open access: yesJournal 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

In-situ experiment on critical thickness of brittle-ductile transition of single-crystal silicon

open access: yes工程科学学报, 2019
Single-crystal silicon is widely used in optoelectronics and micro-electromechanical systems because of its unique physical and chemical properties.
LIU Bing   +3 more
doaj   +1 more source

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

open access: yesActa 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   +3 more
doaj   +1 more source

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

open access: yesModelling 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   +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

open access: yes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   +4 more
doaj   +1 more source

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

open access: yesMetals
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

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