Results 91 to 100 of about 52,925 (308)

Axial stress monitoring strategy in arbitrary cross-section based on acoustoelastic guided waves using PZT sensors

open access: yesAIP Advances, 2019
Axial stress monitoring in arbitrary cross sections is a challenging task. Stringers are the main axial load carrying components of aircraft skin structures and have typical complex cross sections.
Yunlong Ma   +5 more
doaj   +1 more source

Mode control of guided wave in magnetic hollow cylinder using electromagnetic acoustic transducer array

open access: yesNuclear Engineering and Technology, 2015
The aim of this work is to demonstrate a method for exciting and receiving torsional and longitudinal mode guided waves with an electromagnetic acoustic transducer (EMAT) ring array. First of all, a three-dimensional guided wave simulator is developed in
Akinori Furusawa   +2 more
doaj   +1 more source

A Dislocation Perspective on Strength and Toughness in Ceramics

open access: yesAdvanced Engineering Materials, EarlyView.
Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
wiley   +1 more source

Damage detection of defects using linear and nonlinear guided waves [PDF]

open access: yes, 2016
In the past few years, application of guided waves for damage detection has been a topic of significant interest for many studies. Conventional guided wave techniques have been widely used in industry and technology for material characterisation and ...
Soleimanpour, Reza
core   +1 more source

The numerical analysis of the interaction between the low-order Lamb wave modes and surface breaking cracks

open access: yesMATEC Web of Conferences, 2019
Lamb waves, as one of the types of guided waves, are extensively used for inspecting large structures as well as for structure health monitoring applications.
Šofer Michal   +4 more
doaj   +1 more source

Assessing Damages in Pipes through Circular Distribution of Ultrasonic Guided Wave Reflections from Defects

open access: yesChemical Engineering Transactions, 2016
Damages in pipes such as cracks and corrosions may threaten the integrity of pipeline. Using ultrasonic guided waves to detect these defects is efficient. The waves propagate in the pipe wall and carry information of the entire structure.
X.X. Li, S.Q. Zhou
doaj   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

open access: yesAdvanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal   +3 more
wiley   +1 more source

High sensitivity flexible Lamb-wave humidity sensor with graphene oxide sensing layer [PDF]

open access: yes, 2015
This paper reports high performance flexible lamb wave sensors with a graphene oxide sensing layer. The devices were fabricated on piezoelectric ZnO thin films deposited on flexible polyimide substrates.
He, Xingli   +10 more
core   +1 more source

Multifunctional Metasurfaces for Bridging Terahertz Waves in Free Space and Waveguides

open access: yesAdvanced Physics Research
Metasurfaces integrated with transmission devices like waveguides can realize versatile control of guided waves and significantly enhance the integration level of terahertz systems.
Jinhui Lu   +5 more
doaj   +1 more source

Transfer Printing and Reconfiguration of Soft Electronics Using Digital Microfluidics and Laser Machining

open access: yesAdvanced Functional Materials, EarlyView.
This paper presents a digital microfluidics‐based technique for transferring and reconfiguring soft nanomembranes. Laser‐machined nanothin membranes are picked up, transported, and aligned via tailored surface tension and the actuation of water droplets, enabling the development of flexible electronics, the integration of functional materials on 3D ...
Quang Anh Nguyen   +15 more
wiley   +1 more source

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