Erosion of Titanium and Aluminium Alloys Using Pulsating Water Jet: Effect of Standoff Distance

2020 ◽  
pp. 56-66
Author(s):  
Dominik Čuha ◽  
Akash Nag ◽  
Alice Chlupová ◽  
Sergej Hloch
Keyword(s):  
Aluminium Alloys ◽  
Water Jet ◽  
Standoff Distance ◽  
Pulsating Water Jet

scholarly journals Standoff Distance in Ultrasonic Pulsating Water Jet

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 88
Author(s):  
Madhulika Srivastava ◽  
Akash Nag ◽  
Somnath Chattopadhyaya ◽  
Sergej Hloch
Keyword(s):  
Unit Length ◽  
Traverse Speed ◽  
Water Jet ◽  
Volume Flow ◽  
Standoff Distance ◽  
Water Volume ◽  
True Nature ◽  
Flow Rates ◽  
Erosion Depth ◽  
Pulsating Water Jet

The water hammer effect is the basis of technologies which is artificially responsible for the decay of continuous jets. A recently developed technique enhances the pressure fluctuations using an acoustic chamber, leading to enhanced erosion effects for various water volume flow rates. The optimum standoff distance for an ultrasonic enhanced water jet is not appropriately estimated using an inclined trajectory. The objective of this study is to comprehend the true nature of the interaction of the standoff distance following the stair trajectory and traverse speed of the nozzle on the erosion depth. Additionally, it also critically compares the new method (staircase trajectory) that obeys the variation in frequency of the impingements for defined volume flow rates with the inclined trajectory. In this study, at constant pressure (p = 70 MPa), the role of impingement distribution with the variation of traverse speed (v = 5–35 mm/s) along the centerline of the footprint was investigated. The maximum erosion depth corresponding to each traverse speed is observed at approximately same standoff distance (65 ± 5 mm) and decreases with the increment in traverse speed (h = 1042 and 47 µm at v = 5 and 35 mm/s, respectively). The results are attributed to the variation in the number of impingements per unit length. The surface and morphology analysis of the cross-section using SEM manifested the presence of erosion characteristics (micro-cracks, cavities, voids, and upheaved surface). By varying the water cluster, different impingement densities can be achieved that are suitable for technological operations such as surface peening, material disintegration, or surface roughening.

Numerical assessment of pulsating water jet in the conical diffusers

2017 ◽  
Author(s):  
Constantin Tanasa ◽  
Tiberiu Ciocan ◽  
Sebastian Muntean
Keyword(s):  
Water Jet ◽  
Numerical Assessment ◽  
Pulsating Water Jet

scholarly journals Experimental study on the depth of cut of granite in pulsating water-jet

2018 ◽  
Vol 377 ◽  
pp. 012116
Author(s):  
Rupam Tripathi ◽  
Sergej Hloch ◽  
Madhulika Srivastava ◽  
Vivek Nigam ◽  
Somnath Chattopadhyaya ◽  
...  
Keyword(s):  
Experimental Study ◽  
Water Jet ◽  
Depth Of Cut ◽  
Pulsating Water Jet

Comparison of the influence of acoustically enhanced pulsating water jet on selected surface integrity characteristics of CW004A copper and CW614N brass

Measurement ◽  
2017 ◽  
Vol 110 ◽  
pp. 230-238 ◽  
Author(s):  
D. Lehocká ◽  
D. Klichová ◽  
J. Foldyna ◽  
S. Hloch ◽  
P. Hvizdoš ◽  
...  
Keyword(s):  
Surface Integrity ◽  
Water Jet ◽  
Pulsating Water Jet

Pulsating water jet devices in debridement of combat wounds

1971 ◽  
Vol 48 (6) ◽  
pp. 612 ◽  
Author(s):  
S N Bhaskar ◽  
D E Gutright ◽  
E E Hunsuck ◽  
A Gross
Keyword(s):  
Water Jet ◽  
Pulsating Water Jet

Erosion Experimental Study on Organ-Pipe Nozzles in Air

2012 ◽  
Vol 602-604 ◽  
pp. 1667-1671
Author(s):  
Feng Li ◽  
Duan Feng Han
Keyword(s):  
Experimental Study ◽  
Water Jet ◽  
Standoff Distance ◽  
Water Jets ◽  
Aluminum Block ◽  
Pipe Water ◽  
Nozzle Configuration ◽  
Organ Pipe

Experiment of aluminum block erosion using organ-pipe nozzle was carried out in air. The erosion effects of water jet were used to evaluate the performance of organ-pipe nozzle. The experiment and corresponding data were used to analyze the effects of nozzle configuration, jet pressure, standoff distance. Results have shown that the organ-pipe water jets are much more effective in aluminum block erosion.

scholarly journals Effects of Continuous and Pulsating Water Jet on CNT/Concrete Composite

2017 ◽  
Vol 63 (10) ◽  
pp. 583-589 ◽  
Author(s):  
Vladimir Foldyna ◽  
Josef Foldyna ◽  
Dagmar Klichova ◽  
Jiri Klich ◽  
Petr Hlavacek ◽  
...  
Keyword(s):  
Water Jet ◽  
Pulsating Water Jet
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