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Journal Articles
Journal Articles
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The physical principle of the relation between the frequency-dependent refr...
Published Online: March 2, 2023
Fig. 1 The physical principle of the relation between the frequency-dependent refraction angle and the detection position on the MEMS-sensor array More
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An example of a calibration filter to remove inter-senor variations. Each M...
Published Online: March 2, 2023
Fig. 2 An example of a calibration filter to remove inter-senor variations. Each MEMS-sensor recording is convolved with the corresponding filter. More
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Illustration of calibration process: ( a ) MEMS-sensor data before calibrat...
Published Online: March 2, 2023
Fig. 3 Illustration of calibration process: ( a ) MEMS-sensor data before calibration and ( b ) after calibration. After calibration, the inter-sensor variations are resolved and a continuous signal is obtained. More
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Vacuum actuated Lamb source: ( a ) a side view of the actuator and ( b ) a ...
Published Online: March 2, 2023
Fig. 4 Vacuum actuated Lamb source: ( a ) a side view of the actuator and ( b ) a top view of the actuator including the piezoelectric element in the middle between the three rounded bolts More
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An impression of the MEMS-sensor array: ( a ) a single module containing 32...
Published Online: March 2, 2023
Fig. 5 An impression of the MEMS-sensor array: ( a ) a single module containing 32 MEMS sensors including corresponding hardware and ( b ) the four modules of the 128-element MEMS-sensor array mounted on an industrial robot More
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An impression of the GLARE 2 sample and the corresponding result of two dif...
Published Online: March 2, 2023
Fig. 7 An impression of the GLARE 2 sample and the corresponding result of two different ultrasonic techniques. ( a ) The cross-section for the GLARE 2 sample contains four different configurations. In each configuration, only a single Teflon insert is shown in each configuration (the figure is no... More
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Fuselage skin that has been inspected: ( a ) picture of the curved panel, (...
Published Online: March 2, 2023
Fig. 8 Fuselage skin that has been inspected: ( a ) picture of the curved panel, ( b ) anisotropic phase velocities estimated from measurements (line) versus phase velocities from finite-difference solution (squares) for different frequencies, ( c ) wavefield as measured on the MEMS array, ( d ) b... More
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An impression and results of the full-size fuselage demonstrator: ( a ) The...
Published Online: March 2, 2023
Fig. 9 An impression and results of the full-size fuselage demonstrator: ( a ) The setup of the full-size fuselage experiment with the MEMS-sensor array mounted on a translation scan system suspended on a trolley. The thickness maps for three different areas of the fuselage, ( b ) located near the... More
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Geometrical representation of the scattering of an incident wave in reflect...
Published Online: March 2, 2023
Fig. 1 Geometrical representation of the scattering of an incident wave in reflected and transmitted waves from a local region, with indication of the adopted discretization strategies in each region of the global-local approach [ 36 ] More
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( a ) Computational time versus number of workers and ( b ) speedup versus ...
Published Online: March 2, 2023
Fig. 5 ( a ) Computational time versus number of workers and ( b ) speedup versus number of workers for different problem sizes on the CFRP plate case More
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Damaged aluminum plate case study: ( a ) mesh and dimensions of the notched...
Published Online: March 2, 2023
Fig. 7 Damaged aluminum plate case study: ( a ) mesh and dimensions of the notched local zone, scattered energy spectra ( b ) for S0 mode incident and for ( c ) A0 mode incident, 2D spatiotemporal response of transmitted u x and u z displacements for a pure S0 mode incident in ( d ) pristine... More
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Damaged CFRP plate case study: mesh and dimensions of the ( a ) 2-ply and (...
Published Online: March 2, 2023
Fig. 8 Damaged CFRP plate case study: mesh and dimensions of the ( a ) 2-ply and ( b ) 4-ply notched local zone, transmitted u x , u y , and u z displacements for pure S0 mode incident in pristine (solid lines) and notched (dashed lines) plates in ( c ) 2-ply and ( d ) 4-ply notched plates More
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Damaged CFRP plate case study: 2D spatiotemporal response of transmitted  u...
Published Online: March 2, 2023
Fig. 9 Damaged CFRP plate case study: 2D spatiotemporal response of transmitted u x , u y , and u z displacements for a pure S0 mode incident in ( a ) pristine, ( b ) 2-ply, and ( c ) 4-ply notched plates More