Results 31 to 40 of about 14,446 (253)

Performance of periodic piezoelectric composite arrays incorporating a passive phase exhibiting anisotropic properties [PDF]

open access: yes, 2005
This paper explores the minimisation of interelement cross talk in 1-D and 2-D periodic composite array structures through the incorporation of a passive phase exhibiting anisotropic elastic properties.
Hayward, G.   +4 more
core   +1 more source

An Omnidirectional Near-Field Comprehensive Damage Detection Method for Composite Structures

open access: yesApplied Sciences, 2019
As one of the active structural health monitoring methods based on the Lamb wave, the ultrasonic phased-array damage detection method can provide information such as damage location and range more intuitively, which is why this method is a research ...
Zhiling Wang   +3 more
doaj   +1 more source

Investigating the influence of the constituent materials on the performance of periodic piezoelectric composite arrays [PDF]

open access: yes, 2007
This paper describes a theoretical investigation into the influence of the constituent materials on periodic composite array transducer performance. A finite element (FE) model, configured in PZFlex, is used to analyze the performance of a wedge coupled ...
Gachagan, A.   +3 more
core   +1 more source

Ultrasonic Imaging of Thick Carbon Fiber Reinforced Polymers through Pulse-Compression-Based Phased Array

open access: yesApplied Sciences, 2021
The use of pulse-compression in ultrasonic non-destructive testing has assured, in various applications, a significant improvement in the signal-to-noise ratio.
Muhammad Khalid Rizwan   +4 more
doaj   +1 more source

Методы и средства измерения пространственно-временных характеристик ультразвуковых линейных фазированных антенных решеток [PDF]

open access: yes, 2015
Розглянуті методи вимірювання просторово-часових характеристик ультразвукових лінійних фазованих антенних решіток. Представлені структурні схеми розроблених систем вимірювання.
Kraskovskyj, O. P.   +8 more
core   +1 more source

A review of miniaturised Non-Destructive Testing technologies for in-situ inspections [PDF]

open access: yes, 2018
Non-destructive testing (NDT) techniques have become attractive trends of product manufacturing, installation and post-maintenance in the aerospace, automotive and manufacturing industry, because of its benefits such as cost saving, easy to use and high ...
Addepalli   +12 more
core   +1 more source

Total focussing method for volumetric imaging in immersion non destructive evaluation [PDF]

open access: yes, 2007
This paper describes the use of a 550 (25x22) element 2MHz 2D piezoelectric composite array in immersion mode to image an aluminum test block containing a collection of artificial defects.
Drinkwater, B.   +6 more
core   +1 more source

Phased array ultrasonic testing of gear tooth

open access: yesCogent Engineering
This paper proposes a new testing method, phased array ultrasonic testing, for the internal defects of gear teeth, which can be used to inspect the teeth of final products, breaking the limitations of incomplete volume coverage of conventional ultrasonic
Liang Wang, Chenchen Ma
doaj   +1 more source

Simulation Based Investigation of Focusing Phased Array Ultrasound in Dissimilar Metal Welds

open access: yesNuclear Engineering and Technology, 2016
Flaws at dissimilar metal welds (DMWs), such as reactor coolant systems components, Control Rod Drive Mechanism (CRDM), Bottom Mounted Instrumentation (BMI) etc., in nuclear power plants have been found.
Hun-Hee Kim   +4 more
doaj   +1 more source

Phased array probes for air-coupled ultrasonic testing based on cellular polymer

open access: yesResearch and Review Journal of Nondestructive Testing, 2023
Air-coupled ultrasonic testing is an established alternative to conventional ultrasonic methods for testing of light-weight components in aerospace and automotive industry.
Mate Gaal   +6 more
doaj   +1 more source

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