Results 21 to 30 of about 101,592 (299)

Effect of Carbon Partitioning, Carbide Precipitation, and Grain Size on Brittle Fracture of Ultra-High-Strength, Low-Carbon Steel after Welding by a Quenching and Partitioning Process

open access: yesMetals, 2018
To improve the weld zone properties of Advanced High Strength Steel (AHSS), quenching and partitioning (Q&P) has been used immediately after laser welding of a low-carbon steel. However, the mechanical properties can be affected for several reasons: (
Farnoosh Forouzan   +3 more
doaj   +1 more source

Influence of heat treatment on mechanical properties of steel

open access: yesResearch in Agricultural Engineering, 2004
This article concerns an influence of heat treatment on strength and toughness of steel. The partial results of tests on steel 12 042 are presented.
R. Chotěborský, M. Brožek
doaj   +1 more source

Investigation of the effect of preload on the mechanical properties of fiber-reinforced geopolymer concrete [PDF]

open access: yesمهندسی عمران شریف, 2022
Concrete may be loaded at an early age for a variety of reasons. This loading can have negative and sometimes destructive effects on the hardened properties of concrete.
A. Sadr Momtazi, K. Gholipour, R. Kohani
doaj   +1 more source

Reinforcing Efficiency of Micro and Macro Continuous Polypropylene Fibers in Cementitious Composites

open access: yesApplied Sciences, 2019
The effect of the microstructure of hydrophilic polypropylene (PP) fibers in the distribution of cracking associated with the strengthening and toughening mechanism of cement-based composites under tensile loading was studied.
Barzin Mobasher   +4 more
doaj   +1 more source

Toughness and edge-toughness

open access: yesDiscrete Mathematics, 1997
The toughness of a graph \(G\), introduced by \textit{V. Chvátal} [Discrete Math. 5, 215-228 (1973; Zbl 0256.05122)] in studying hamiltonicity, is the largest real number \(t\) for which \(|S|\geq t\omega (G-S)\) for every \(S\subseteq V(G)\) with \(\omega (G-S)\geq 2\).
openaire   +3 more sources

AN INVESTIGATION OF THE EFFECT OF TOUGHNESS AND BRITTLENESS INDEXES ON AMPERE CONSUMPTION AND WEAR RATE OF A CIRCULAR DIAMOND SAW

open access: yesRudarsko-geološko-naftni Zbornik, 2018
The circular diamond saw (CDS) is one of the major sawing machines in dimension stone processing plants. Predicting the performance of a circular diamond saw is very important to estimate the cost and the planning of the stone processing plants.
Masoud Akhyani   +2 more
doaj   +1 more source

Tough Love in Tough Times

open access: yesStudies in the Maternal, 2012
This paper examines the cultural politics of 'thrift' and 'tough love'. It reflects upon the significance of notions of 'good parenting' in policy and popular debates around social mobility and aspiration. In particular, it reviews the profound importance of notions of 'poor parenting' in the culturalisation of poverty, whereby poverty is seen to be a ...
openaire   +3 more sources

Feeding without teeth: the material properties of rhamphothecae from two species of durophagous sea turtles

open access: yesRoyal Society Open Science, 2023
The feeding apparatus of sea turtles comprises cornified keratinous rhamphothecae overlaying a bony rostrum. Although keratin is less stiff than the enamel of toothed animals, certain species of sea turtles are capable of withstanding large forces when ...
Danielle N. Ingle   +3 more
doaj   +1 more source

Employment Protection: Tough to Scrap or Tough to Get? [PDF]

open access: yesThe Economic Journal, 2006
If legislating employment protection is a protracted process subject to time delays, then firms can dismiss workers before an increase in protection is implemented. Heightened risk of dismissal before implementation makes workers in countries with flexible labour markets reluctant to support proposals for more stringent protection.
openaire   +5 more sources

Extraordinary enhancement of the toughness and plasticity of multilayered metallic glass composites with gradient heterogeneous interfaces

open access: yesPhilosophical Magazine Letters
A strategy is proposed to enhance the mechanical properties of metallic glasses using multilayered composites with various initial free-volume gradient interfaces and validated by finite element modelling.
Yongwei Wang, Guangping Zheng, Mo Li
doaj   +1 more source

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