Results 21 to 30 of about 331,911 (292)

A mathematical model of critical jet heights causing droplets splashing in BOF steelmaking

open access: yesMetalurgija, 2022
It is important to understand the physical interaction between top-blown oxygen jet and liquid bath in basic oxygen steelmaking furnaces (BOF). In this study, cold model experiments were carried out to investigate the cavity depth, diameter and the ...
D. Xu, B. Zheng, L. X. Guo, H. X. Pang
doaj  

The complexity of recognizing minimally tough graphs [PDF]

open access: yes, 2019
A graph is called $t$-tough if the removal of any vertex set $S$ that disconnects the graph leaves at most $|S|/t$ components. The toughness of a graph is the largest $t$ for which the graph is $t$-tough.
Katona, Gyula Y   +2 more
core   +3 more sources

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

Plastic pre-compression and creep damage effects on the fracture toughness behaviour of Type 316H stainless steel [PDF]

open access: yes, 2014
The influence of inelastic damage in the form of plastic pre-strain and creep damage, on fracture toughness of Type 316H stainless steel has been examined.
Davies, C. M.   +3 more
core   +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

Influence of boron content on the fracture toughness and fatigue crack propagation kinetics of bainitic steels [PDF]

open access: yes, 2016
The relatively good combination of high strength and ductility makes bainitic steels a candidate to replace many other steels in industrial applications. However, in service, ductility and strength are not up to standard requirements.
Cabrera Marrero, José M.   +4 more
core   +2 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

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

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