Results 1 to 10 of about 229,816 (259)

Ultrasonic fatigue testing of concrete

open access: hybridUltrasonics, 2021
Cyclic compression fatigue properties of concrete are studied with the ultrasonic fatigue testing method with cycling frequency 19 kHz and are compared to servo-hydraulic tests performed at 60 Hz. Ultrasonic testing was found applicable for rapid generation of very high cycle fatigue (VHCF) data of concrete.
M. Fitzka   +6 more
openalex   +4 more sources

Phased array ultrasonic testing of micro-flaws in additive manufactured titanium block

open access: goldMaterials Research Express, 2020
While titanium components manufactured by additive manufacturing have been widely used in direct molding of complex components, their performance is strongly affected by existing internal flaws generated in the unique manufacturing process.
Xiaohui Wang   +6 more
doaj   +2 more sources

Design and Finite Element Simulation of a Novel 3D-CMUT Device for Simultaneous Sensing of In-Plane and Out-of-Plane Displacements of Ultrasonic Guided Waves

open access: yesSensors, 2023
In this study, we introduce a physical model of a three-dimensional (3D) guided wave sensor called 3D-CMUT, which is based on capacitive micro-machined ultrasonic transducers (CMUTs).
Sai Zhang   +5 more
doaj   +1 more source

Ultra-broad low-frequency forbidden bands in 1D solid–fluid acoustic superlattices with multiple solid constituents

open access: yesAIP Advances, 2023
In this paper, a theoretical model of underwater acoustic wave propagation, based on the transfer matrix method, is employed to calculate acoustic wave transmission through a 1D solid–fluid superlattice (SFSL) with multiple solid constituents.
Sai Zhang, Huizi He, Baiqiang Xu, Wei Lu
doaj   +1 more source

Research progress in ultrasonic testing for friction stir welding of aluminum alloy

open access: yesCailiao gongcheng, 2022
The defects in friction stir welding (FSW) of aluminum alloy, e.g., tunnel defect, lack of penetration (LOP) and kissing bond, are with complex shape and narrow gap by inappropriate welding parameters.
JIN Shijie, TIAN Xin, LIN Li
doaj   +1 more source

Ultrasonic testing for mechanical engineering domain: present and future perspective [PDF]

open access: yesInternational Journal of Research in Industrial Engineering, 2018
Ultrasonic testing uses high frequency sound waves of a range between 0.5 to 15 MHz to conduct testing. The basic principle and applications of ultrasonic testing techniques is enormous use under the domain of mechanical engineering applications ...
A. Sharma, A. Sinha
doaj   +1 more source

The Influence of the Hardness of the Tested Material and the Surface Preparation Method on the Results of Ultrasonic Testing

open access: yesApplied Sciences, 2023
Non-destructive ultrasonic testing can be used to assess the properties and condition of real machine elements during their operation, with limited (one-sided) access to these elements.
Jakub Kowalczyk   +4 more
doaj   +1 more source

Numerical simulation of phased array ultrasonic testing for fillet weld defects of type-B sleeve

open access: yesYou-qi chuyun, 2022
Type-B sleeve repair is one of the main permanent repair methods for long-distance oil and gas pipelines at present. However, fillet weld defects are often produced during the operation, which need to be detected and evaluated by phased array ultrasonic ...
Hongbo ZHANG   +5 more
doaj   +1 more source

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