Ultrasonic P- and S-Wave Attenuation and Petrophysical Properties of Deccan Flood Basalts, India, as Revealed by Borehole Studies
Sign Up to like & getrecommendations! Published in 2018 at "Pure and Applied Geophysics"
DOI: 10.1007/s00024-018-1817-x
Abstract: Petrophysical properties and ultrasonic P- and S-wave attenuation measurements on 35 Deccan basalt core specimens, recovered from Killari borehole site in western India, provide unique reference data-sets for a lesser studied Deccan Volcanic Province. These… read more here.
Keywords: wave attenuation; petrophysical properties; deccan volcanic; basalt ... See more keywords
The relations of fiber length, wood density, and compressive strength to ultrasonic wave velocity within stem of Melia azedarach
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the Indian Academy of Wood Science"
DOI: 10.1007/s13196-018-0227-0
Abstract: Radial and axial variations in the longitudinal ultrasonic wave velocity within stem of 17–19-year-old Melia azedarach planted in two different sites in northern Vietnam were experimentally investigated. Wood samples were collected from 10, 50, and… read more here.
Keywords: velocity within; azedarach; velocity; ultrasonic wave ... See more keywords
Three-dimensional ultrasonic wave simulation in laminated CFRP using elastic parameters determined from wavefield data
Sign Up to like & getrecommendations! Published in 2019 at "Composites Part B: Engineering"
DOI: 10.1016/j.compositesb.2019.107018
Abstract: Abstract A numerical modeling of ultrasonic testing (UT) for a carbon fiber reinforced plastic (CFRP) material is presented. Due to the heterogeneity caused by the several unidirectional lamina stacked at different angle, the CFRP shows… read more here.
Keywords: dimensional ultrasonic; cfrp; three dimensional; ultrasonic wave ... See more keywords
Application of laser ultrasonic technique for detecting weld defect based on FDST method
Sign Up to like & getrecommendations! Published in 2020 at "Optik"
DOI: 10.1016/j.ijleo.2020.165366
Abstract: Abstract The propagation image of laser-generated ultrasonic wave interaction with the weld defect are investigated by the finite element method (FEM) and experimental system. We analyses the changes of ultrasonic wave at the different positions… read more here.
Keywords: based fdst; ultrasonic wave; laser generated; weld defect ... See more keywords
Investigation of acoustic radiator affecting bubble-acoustic interaction in ultrasonic wave-assisted UWW at shallow water
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Manufacturing Processes"
DOI: 10.1016/j.jmapro.2018.12.020
Abstract: Abstract The evolution mode of the dynamic bubble around the arc burning zone plays an essential role in adversely affecting the stability of underwater wet welding (UWW) process. Ultrasonic wave-assisted UWW (U-UWW) provides such a… read more here.
Keywords: bubble acoustic; bubble evolution; interaction; acoustic interaction ... See more keywords
Measurement of fastening force using dry-coupled ultrasonic waves.
Sign Up to like & getrecommendations! Published in 2020 at "Ultrasonics"
DOI: 10.1016/j.ultras.2020.106178
Abstract: The accurate measurement of assembly fastening force of the high-pressure compressor rotor is of great significance to improve the structural connection quality and comprehensive performance of aero-engine. To solve the problem that liquid couplant reduces… read more here.
Keywords: fastening force; ultrasonic wave; measurement; coupled ultrasonic ... See more keywords
Study on frequency optimization and mechanism of ultrasonic waves assisting water flooding in low-permeability reservoirs
Sign Up to like & getrecommendations! Published in 2020 at "Ultrasonics Sonochemistry"
DOI: 10.1016/j.ultsonch.2020.105291
Abstract: Highlights • Unsupervised learning groups rocks based on permeability, porosity & wettability.• Ultrasonic wave improves water flooding performance in low-permeability cores.• Ultrasonic wave can change the micromorphology of low-permeability cores.• Ultrasonic wave can reduce the… read more here.
Keywords: study frequency; ultrasonic wave; water flooding; permeability ... See more keywords
Numerical simulation of ultrasonic wave transmission experiments in rocks of shale gas reservoirs
Sign Up to like & getrecommendations! Published in 2017 at "AIP Advances"
DOI: 10.1063/1.4974749
Abstract: Shale gas reservoirs have risen in importance in China’s new power source exploration and development program. The investigation of the propagation of ultrasonic waves in shale forms the basis for the full waveform application of… read more here.
Keywords: gas reservoirs; transmission; ultrasonic wave; gas ... See more keywords
A new discovery of arc shape in pulsed ultrasonic wave assisted TIG welding
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Plasmas"
DOI: 10.1063/1.5044227
Abstract: An entirely new change-rule of an arc shape was found in the pulsed ultrasonic assisted tungsten-electrode inert gas welding process (PU-TIG), i.e., the arc shape had an obvious characteristic of periodic changes under the actions… read more here.
Keywords: shape; ultrasonic wave; process; pulsed ultrasonic ... See more keywords
A tunable phononic crystal system for elastic ultrasonic wave control
Sign Up to like & getrecommendations! Published in 2021 at "Applied Physics Letters"
DOI: 10.1063/5.0054937
Abstract: Tunable phononic crystals (PCs) are burgeoning within the engineering communities due to their adjustable capabilities for manipulating elastic waves. In this Letter, a shape memory alloy (SMA) stubbed PC is elaborated to achieve the tunable… read more here.
Keywords: phononic crystal; control; tunable phononic; ultrasonic wave ... See more keywords
The Attenuation and Propagation Law of Ultrasonic Wave in UHV Gas Insulated Line
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3021432
Abstract: Gas insulated transmission line (GIL) is widely used for power transmission in special geographical environment such as river crossing, mountain crossing and city tunnel crossing scenarios. Because of its totally enclosed structure, it is difficult… read more here.
Keywords: propagation; attenuation; gas insulated; gil ... See more keywords