Results 71 to 80 of about 21,546 (307)

Biography of Are Tsirk (1937-2015): Flintknapper and scholar

open access: yesJournal of Lithic Studies, 2015
Are Tsirk was as much a scholar as he was a flintknapper. These disciplines were intertwined and expressed in his experimental research, by way of his exploration of fractography, and his replication of stone tools which spanned the archaeological record
Steve Adams
doaj   +1 more source

Ultrafast high‐temperature sintering of dental grade 4YSZ ceramics: Effects on microstructure and flexural strength

open access: yesInternational Journal of Applied Ceramic Technology, Volume 23, Issue 1, February 2026.
Abstract This study compares the effects of ultrafast high‐temperature sintering (UHS) and conventional sintering on the microstructural and mechanical properties of 4 mol% yttria‐stabilized zirconia, a ceramic widely used in dental restorations for its high strength, biocompatibility, and aesthetic qualities.
Gabriela Carrão Aragonez   +5 more
wiley   +1 more source

Fractographic Analysis Of Selected Boron Steels Subjected To Impact Testing

open access: yesArchives of Metallurgy and Materials, 2015
In this paper dynamic properties of low-alloy boron steels – Hardox 500, B27 and HTK 900H in delivered state (after hardening and tempering) are considered.
Dudziński W.   +2 more
doaj   +1 more source

Breakage Characterization of Magnetite under Impact Loads and Cyclic Impact Loading

open access: yesEnergies, 2020
A series of impact compression tests were conducted to study the breakage characteristics of magnetite, as well as the impact pressure on its strain rate and dynamic compressive strength.
Liang Si, Yijun Cao, Guixia Fan
doaj   +1 more source

Effects of Processing on the Mechanical Performance of GF‐PC Composites: A Multiscale Investigation

open access: yesPolymer Composites, Volume 47, Issue 2, Page 1300-1315, 20 January 2026.
From processing and interface conditions, to macro/micro scale characterization, and postmortem analysis. ABSTRACT A robust fiber‐matrix interface is crucial for any composite system, with higher challenges in thermoplastic matrices compared to thermosets (reaction in composite level).
O. Vetterli, G. A. Pappas, P. Ermanni
wiley   +1 more source

Mode‐II Fracture and Residual Flexural Strength of MWCNT Modified E‐Glass/Epoxy Laminates

open access: yesPolymer Composites, Volume 47, Issue 2, Page 1787-1797, 20 January 2026.
Preparation and mode‐II interlaminar fracture test procedure for the CNT modified E‐glass/epoxy laminates. ABSTRACT In this study, three types of carboxyl‐functionalized multi‐walled carbon nanotubes (MWCNTs) were used to modify the mode‐II interlaminar fracture characteristics and residual bending resistance of E‐glass/epoxy composite laminates.
Coşkun Yildiz, Fatih Daricik
wiley   +1 more source

A comparison of high temperature fatigue crack propagation in various sub-solvus heat treated turbine disc alloys

open access: yes, 2007
The microstructure and fatigue performance of three sub-solvus heat treated nickel based disc superalloys for turbine disc applications are reported. The alloy variants studied are RR1000, N18 and Udimet 720 Low Interstitial (U720Li), with the latter ...
Everitt, S.   +5 more
core   +1 more source

Effect of Er:YAG Laser Irradiation on the Flexural Fatigue Strength of a 4YSZ Ceramic

open access: yesJournal of Biomedical Materials Research Part B: Applied Biomaterials, Volume 114, Issue 1, January 2026.
ABSTRACT This study aimed to evaluate the effect of Er:YAG laser surface treatment on the flexural fatigue strength of 4YSZ ceramics, with or without resin cement application. Disk‐shaped zirconia ceramic specimens (Ø = 15 mm, thickness = 1.2 mm of IPS e.max ZirCAD MT BL) were prepared and randomly assigned to 10 groups based on two factors: “surface ...
Duvan Cala Castillo   +9 more
wiley   +1 more source

Microstructural and Fractographic Characterization of a Thermally Embrittled Nuclear Grade Steel: Part I - Annealing

open access: yesMaterials Research, 2002
A nuclear reactor pressure vessel steel was submitted to different annealing heat treatments aimed at simulating neutron irradiation damage. The obtained microstructures were mechanically tested with subsequent metallographic and fractographic ...
Tarpani José R.   +3 more
doaj  

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