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Journal Articles
Journal:
Journal of Vibration and Acoustics
Article Type: Research Papers
Publisher: ASME
J. Vib. Acoust. December 2023, 145(6): 061001.
Paper No: VIB-23-1105
Published Online: September 27, 2023
Topics:
Acoustics,
Additive manufacturing,
Extruding,
Radiation (Physics),
Transducers,
Dynamics (Mechanics),
Levitation,
Printing
Includes: Supplementary data
Journal Articles
Accepted Manuscript
Journal:
Journal of Vibration and Acoustics
Article Type: Research Papers
Publisher: ASME
J. Vib. Acoust.
Paper No: VIB-23-1169
Published Online: September 27, 2023
Image
Published Online: September 27, 2023
Fig. 1 Contactless 3D printing via material extrusion on an acoustic air bed. Concept schematic of directing a tailored acoustic wavefront to contactlessly support material during extrusion. Engineered arrangement of transducers induces an acoustic radiative force ( F → a r f ... More about this image found in Contactless 3D printing via material extrusion on an acoustic air bed. Conc...
Image
Published Online: September 27, 2023
Fig. 2 Numerical finite element acoustic model and analysis of the acoustic radiation force. ( a ) Model of the source array as used experimentally (see Supplemental Material on the ASME Digital Collection Videos 1 and 2). ( b ) Cross section of the transducer array and the resulting acoustic fi... More about this image found in Numerical finite element acoustic model and analysis of the acoustic radiat...
Image
Published Online: September 27, 2023
Fig. 3 Analysis of acoustic force components that support the filament: ( a ) Vertical radiation force ( F y ) exerted on the circular filament cross section. ( b ) Horizontal force ( F x ) exerted on the filament. The filament is extruded along the Z -axis; gravity points in the − Y direc... More about this image found in Analysis of acoustic force components that support the filament: ( a ) Vert...
Image
Published Online: September 27, 2023
Fig. 4 Analysis of optimal transducer array arrangement during extrusion. Vertical acoustic radiation force ( F y ) as a function of position on the plane comprising the extrusion direction ( Z ) and the gravity direction (− Y ). ( a ) Transducer spacing is 1 mm; ( b ) transducer spacing is 3 m... More about this image found in Analysis of optimal transducer array arrangement during extrusion. Vertical...
Image
Published Online: September 27, 2023
Fig. 5 Analysis of contactless material support in three dimensions. Horizontal (lateral) acoustic radiation force ( F x ) as a function of horizontal position ( x -axis) where x = 0 is the stable equilibrium position. Filament diameter is 0.4 mm, and the total length is 40 mm. Extruded filam... More about this image found in Analysis of contactless material support in three dimensions. Horizontal (l...
Image
Published Online: September 27, 2023
Fig. 6 Experimental dynamics of extrusion of a 3D-printer filament. ( a ) Acoustic field is turned OFF, and the filament sags under its weight as it is extruded. See also Supplemental Material Video 1; ( b ) acoustic field is turned ON; the filament is supported by an air bed and better maintain... More about this image found in Experimental dynamics of extrusion of a 3D-printer filament. ( a ) Acoustic...
Journal Articles
Journal:
Journal of Vibration and Acoustics
Article Type: Research Papers
Publisher: ASME
J. Vib. Acoust. October 2023, 145(5): 051006.
Paper No: VIB-22-1422
Published Online: September 22, 2023
Image
in A Novel Method for the Determination of Blade Vibration Stress Considering the Change in Blade Tip Timing Sensing Position
> Journal of Vibration and Acoustics
Published Online: September 22, 2023
Fig. 1 Fundamental principle of BTT system More about this image found in Fundamental principle of BTT system
Image
in A Novel Method for the Determination of Blade Vibration Stress Considering the Change in Blade Tip Timing Sensing Position
> Journal of Vibration and Acoustics
Published Online: September 22, 2023
Fig. 2 Overview of the proposed methodology More about this image found in Overview of the proposed methodology
Image
in A Novel Method for the Determination of Blade Vibration Stress Considering the Change in Blade Tip Timing Sensing Position
> Journal of Vibration and Acoustics
Published Online: September 22, 2023
Fig. 3 Calculation of stagger angle More about this image found in Calculation of stagger angle
Image
in A Novel Method for the Determination of Blade Vibration Stress Considering the Change in Blade Tip Timing Sensing Position
> Journal of Vibration and Acoustics
Published Online: September 22, 2023
Fig. 4 FE model of the blade with tip section details More about this image found in FE model of the blade with tip section details
Image
in A Novel Method for the Determination of Blade Vibration Stress Considering the Change in Blade Tip Timing Sensing Position
> Journal of Vibration and Acoustics
Published Online: September 22, 2023
Fig. 5 Typical mode shapes and natural frequencies of the rotor blade: ( a ) 1B (302 Hz), ( b ) 1T (1014 Hz), ( c ) 2B (1472 Hz), ( d ) 2T (2263 Hz), and ( e ) 1C (2729 Hz) More about this image found in Typical mode shapes and natural frequencies of the rotor blade: ( a ) 1B (3...
Image
in A Novel Method for the Determination of Blade Vibration Stress Considering the Change in Blade Tip Timing Sensing Position
> Journal of Vibration and Acoustics
Published Online: September 22, 2023
Fig. 6 Axial sensor locations for BTT systems More about this image found in Axial sensor locations for BTT systems
Image
in A Novel Method for the Determination of Blade Vibration Stress Considering the Change in Blade Tip Timing Sensing Position
> Journal of Vibration and Acoustics
Published Online: September 22, 2023
Fig. 7 Calibration factors predicted by traditional method More about this image found in Calibration factors predicted by traditional method
Image
in A Novel Method for the Determination of Blade Vibration Stress Considering the Change in Blade Tip Timing Sensing Position
> Journal of Vibration and Acoustics
Published Online: September 22, 2023
Fig. 8 Modal displacement of different axial locations: ( a ) 1B mode, ( b ) 2B mode, ( c ) 1T mode, ( d ) 2T mode, and ( e ) 1C mode More about this image found in Modal displacement of different axial locations: ( a ) 1B mode, ( b ) 2B mo...
Image
in A Novel Method for the Determination of Blade Vibration Stress Considering the Change in Blade Tip Timing Sensing Position
> Journal of Vibration and Acoustics
Published Online: September 22, 2023
Fig. 9 Corrected displacement of different modes at Sensor 1: ( a ) 1B mode, ( b ) 2B mode, ( c ) 1T mode, ( d ) 2T mode, and ( e ) 1C mode More about this image found in Corrected displacement of different modes at Sensor 1: ( a ) 1B mode, ( b )...
Image
in A Novel Method for the Determination of Blade Vibration Stress Considering the Change in Blade Tip Timing Sensing Position
> Journal of Vibration and Acoustics
Published Online: September 22, 2023
Fig. 10 Calibration factors predicted by proposed method More about this image found in Calibration factors predicted by proposed method
Image
in A Novel Method for the Determination of Blade Vibration Stress Considering the Change in Blade Tip Timing Sensing Position
> Journal of Vibration and Acoustics
Published Online: September 22, 2023
Fig. 11 Corrected and theoretical displacements of Sensors 2 and 3: ( a ) 1T mode, ( b ) 2T mode, and ( c ) 1C mode More about this image found in Corrected and theoretical displacements of Sensors 2 and 3: ( a ) 1T mode, ...
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