Experimental analysis on pure copper weld with high intensity blue diode laser by in-situ high speed x-ray imaging

2019 ◽  
Author(s):  
Ritsuko Higashino ◽  
Masahiro Tsukamoto ◽  
Yuji Sato ◽  
Shinichiro Masuno ◽  
Takahisa Shobu ◽  
...  
Keyword(s):  
Diode Laser ◽  
Experimental Analysis ◽  
High Intensity ◽  
High Speed ◽  
Pure Copper ◽  
X Ray ◽  
X Ray Imaging ◽  
Blue Diode Laser

scholarly journals In Situ Analysis of Laser Powder Bed Fusion Using Simultaneous High-Speed Infrared and X-ray Imaging

JOM ◽  
2020 ◽  
Vol 73 (1) ◽  
pp. 201-211 ◽  
Author(s):  
Benjamin Gould ◽  
Sarah Wolff ◽  
Niranjan Parab ◽  
Cang Zhao ◽  
Maria Cinta Lorenzo-Martin ◽  
...  
Keyword(s):  
High Speed ◽  
In Situ Analysis ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
X Ray ◽  
X Ray Imaging

High-Speed X-Ray Imaging of Diesel Injector Needle Motion

2009 ◽  
Author(s):  
A. L. Kastengren ◽  
C. F. Powell ◽  
Z. Liu ◽  
K. Fezzaa ◽  
J. Wang
Keyword(s):  
High Speed ◽  
Three Dimensional ◽  
Linear Increase ◽  
Nozzle Geometry ◽  
X Ray ◽  
Needle Position ◽  
X Ray Imaging ◽  
Linear Oscillation ◽  
Degree Of Convergence

Phase-enhanced x-ray imaging has been used to examine the geometry and dynamics of four diesel injector nozzles. The technique uses a high-speed camera, which allows the dynamics of individual injection events to be observed in real time and compared. Moreover, data has been obtained for the nozzles from two different viewing angles, allowing for the full three-dimensional motions of the needle to be examined. This technique allows the needle motion to be determined in situ at the needle seat and requires no modifications to the injector hardware, unlike conventional techniques. Measurements of the nozzle geometry have allowed the average nozzle diameter, degree of convergence or divergence, and the degree of rounding at the nozzle inlet to be examined. Measurements of the needle lift have shown that the lift behavior of all four nozzles consists of a linear increase in needle lift with respect to time until the needle reaches full lift and a linear decrease as the needle closes. For all four nozzles, the needle position oscillates at full lift with a period of 170–180 μs. The full-lift position of the needle changes as the rail pressure increases, perhaps reflecting compression of the injector components. Significant lateral motions were seen in the two single-hole nozzles, with the needle motion perpendicular to the injector axis resembling a circular motion for one nozzle and linear oscillation for the other nozzle. The two VCO multihole nozzles show much less lateral motion, with no strong oscillations visible.

Bead-on-plate welding of pure copper sheet with 200 W high intensity blue diode laser

2020 ◽  
Author(s):  
Kento Morimoto ◽  
Masahiro Tsukamoto ◽  
Yuji Sato ◽  
Shin-Ichiro Masuno ◽  
Susumu Kato ◽  
...  
Keyword(s):  
Diode Laser ◽  
High Intensity ◽  
Pure Copper ◽  
Copper Sheet ◽  
Blue Diode Laser

High Speed Imaging Study of the Dynamics of Ultrasonic Bubbles at a Liquid-Solid Interface

2013 ◽  
Vol 765 ◽  
pp. 230-234 ◽  
Author(s):  
Dong Yue Tan ◽  
Jia Wei Mi
Keyword(s):  
High Speed ◽  
Primary Dendrite ◽  
Imaging Study ◽  
High Speed Imaging ◽  
X Ray ◽  
Dendrite Fragmentation ◽  
X Ray Imaging ◽  
Wave Induced ◽  
Photon Source

High speed imaging, including the ultrafast synchrotron X-ray imaging facility at the beamline 32-ID-B of the Advanced Photon Source (APS), was used to study in-situ (1) the dynamics of ultrasonic bubbles inside a water suspension with an acoustic field of varied pressure; and (2) the interaction of a pulsing bubble at a primary dendrite arm tip inside a succinonitrile-1wt% camphor organic transparent alloy. A simple finite element based model was developed to simulate the stress distribution inside the dendrite due to the pulsing of the ultrasonic bubble, providing more evidence for understanding quantitatively the ultrasonic wave induced dendrite fragmentation phenomenon.

scholarly journals High Speed In-situ X-ray Imaging of 3D Freeze Printing of Aerogels

2020 ◽  
Vol 36 ◽  
pp. 101513
Author(s):  
Halil Tetik ◽  
Guang Yang ◽  
Wenda Tan ◽  
Anthony Fong ◽  
Shuting Lei ◽  
...  
Keyword(s):  
High Speed ◽  
X Ray ◽  
X Ray Imaging

scholarly journals In situ Characterization of Laser Powder Bed Fusion Using High-Speed Synchrotron X-ray Imaging Technique

2019 ◽  
Vol 25 (S2) ◽  
pp. 2566-2567 ◽  
Author(s):  
Niranjan Parab ◽  
Cang Zhao ◽  
Ross Cunningham ◽  
Luis I. Escano ◽  
Kamel Fezzaa ◽  
...  
Keyword(s):  
High Speed ◽  
Imaging Technique ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
In Situ Characterization ◽  
Powder Bed ◽  
X Ray ◽  
X Ray Imaging

scholarly journals In-situ Observations of Directed Energy Deposition Additive Manufacturing Using High-Speed X-ray Imaging

JOM ◽  
2020 ◽  
Vol 73 (1) ◽  
pp. 189-200 ◽  
Author(s):  
Sarah J. Wolff ◽  
Samantha Webster ◽  
Niranjan D. Parab ◽  
Benjamin Aronson ◽  
Benjamin Gould ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
High Speed ◽  
Energy Deposition ◽  
X Ray ◽  
Directed Energy Deposition ◽  
X Ray Imaging ◽  
In Situ Observations ◽  
Directed Energy

scholarly journals Investigating Powder Spreading Dynamics in Additive Manufacturing Processes by In-situ High-speed X-ray Imaging

2019 ◽  
Vol 32 (2) ◽  
pp. 9-13 ◽  
Author(s):  
Luis I. Escano ◽  
Niranjan D. Parab ◽  
Lianghua Xiong ◽  
Qilin Guo ◽  
Cang Zhao ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
High Speed ◽  
Manufacturing Processes ◽  
X Ray ◽  
X Ray Imaging ◽  
Spreading Dynamics

scholarly journals In-situ high-speed X-ray imaging of piezo-driven directed energy deposition additive manufacturing

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Sarah J. Wolff ◽  
Hao Wu ◽  
Niranjan Parab ◽  
Cang Zhao ◽  
Kornel F. Ehmann ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
High Speed ◽  
Energy Deposition ◽  
X Ray ◽  
Directed Energy Deposition ◽  
X Ray Imaging ◽  
Directed Energy
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