Results 71 to 80 of about 29,052 (189)

Adaptive Twisting Metamaterials

open access: yesAdvanced Materials, EarlyView.
This work introduces torque‐controlled twisting metamaterials as a transformative platform for adaptive crashworthiness. By combining multiscale predictive modeling with experimental validation on additively manufactured gyroids, it demonstrates tunable stiffness, collapse stress, and energy absorption.
Mattia Utzeri   +6 more
wiley   +1 more source

Comparison of Mechanical Properties of Resin Composites with Resin Modified Glass Ionomers

open access: yesJournal of Dental Biomaterial, 2015
Statement of Problem: There are controversial reports regarding physical and mechanical properties of resin composites and glass ionomer cements. Some revealed higher strength and hardness for resin composites while others showed a comparable value ...
Taha NA, Ghanim A, Tavangar MS
doaj  

Flexure Strength and Fracture Propagation in Zirconia Ceramic Composites with Exfoliated Graphene Nanoplatelets

open access: yesCeramics, 2020
In this work, the flexure strength and fracture propagation mechanisms in yttria tetragonal zirconia (3YTZP) dense composites with 1 and 5 vol.% exfoliated graphene nanoplatelets (e-GNP) were assessed.
Ángela Gallardo-López   +5 more
doaj   +1 more source

Crack Repair in Hydroxyapatite Bioceramics Using an Ultraviolet Ultrafast Laser

open access: yesAdvanced Materials Interfaces, EarlyView.
The study proposes an ultrafast ultraviolet laser approach to repair hidden tooth cracks, which has been preliminarily validated on HAP. Moreover, this technique aims to strengthen the native enamel structure rather than introducing a foreign filling material.
Yan Xue   +6 more
wiley   +1 more source

Evaluation of electron/ion sources effect and number of shots on Fe-Ta thin films using plasma focus device

open access: yesJournal of Materials Science: Materials in Engineering
The primary objective of this study was to employ the plasma focus (PF) technique to synthesize iron-tantalum (Fe-Ta) thin films while mitigating the reduction of iron content.
ArezooSadat EbneRasool   +2 more
doaj   +1 more source

Study on the Precipitation Sequence in Al-Zn-Mg with Low Zn/Mg Aged at 200°C [PDF]

open access: yesArchives of Metallurgy and Materials
Al-Zn-Mg alloys are known for their high strength-to-weight ratio. This study focuses on the changes in mechanical and microstructural properties in an alloy with a low Zn/Mg ratio.
Wanlalak Sanphiboon   +12 more
doaj   +1 more source

Simulating the Effects of Substrate Pre-Heating on the Final Structure of Steel Parts Built by Laser Powder Deposition [PDF]

open access: yes, 2004
Tool steel parts built by laser powder deposition often present a heterogeneous distribution of properties caused by the complex structural transformations that occur during the deposition process.
Costa, L., Réti, T., Vilar, R.
core   +1 more source

3D Printing of Highly Dense and Translucent Zirconia Parts for Dental Applications: Effect of Filament Overlapping

open access: yesAdvanced Materials Technologies, EarlyView.
This study formulated a 5Y‐PSZ zirconia paste for extrusion‐based additive manufacturing via direct ink writing, producing dense ceramic structures for dental applications. A colloidal approach with 47 vol% nanometric powder and tailored additives optimized rheology and printability.
Juliana de Freitas Gouveia Silva   +5 more
wiley   +1 more source

Mechanical Behavior and Failure Analysis of Prosthetic Retaining Screws after Long‐Term Use In Vivo. Part 2: Metallurgical and Microhardness Analysis [PDF]

open access: yes, 2007
Purpose: This study involved testing and analyzing multiple retrieved prosthetic retaining screws after long‐term use in vivo to: (1) detect manufacturing defects that could affect in‐service behavior; (2) characterize the microstructure and alloy ...
Al Jabbari, Youssef S.   +4 more
core   +1 more source

Unveiling a Bulk WTaV Multicomponent Alloy With Superior Thermal Properties and Manufacturability

open access: yesAdvanced Science, EarlyView.
ABSTRACT Many tungsten (W)‐based medium and high entropy alloys (HEA) demonstrate superior microstructural stability and enhanced mechanical properties as compared to pure W, effectively rendering them as viable candidate materials for extreme environments such as nuclear fusion, aerospace applications, and so on.
Ishtiaque K. Robin   +11 more
wiley   +1 more source

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