scholarly journals Experimental investigation of the cavitation erosion of a flat aluminum part using a sonotrode test device

2019 ◽  
Vol 53 (5) ◽  
pp. 637-642
Author(s):  
H. Dursun ◽  
G. Sevilgen ◽  
M. İhsan Karamangil
Keyword(s):  
Experimental Investigation ◽  
Cavitation Erosion ◽  
Test Device ◽  
Aluminum Part

scholarly journals Cavitation Erosion – Phenomenon and Test Rigs

2018 ◽  
Vol 18 (2) ◽  
pp. 15-26 ◽  
Author(s):  
A. K. Krella ◽  
D. E. Zakrzewska
Keyword(s):  
Cavitation Erosion ◽  
Erosion Resistance ◽  
Test Design ◽  
Test Device ◽  
Test Conditions ◽  
Cavitation Erosion Resistance ◽  
Cavitating Jet

AbstractThe cavitation and cavitation erosion phenomenon have been shortly presented. The main four types of test rigs to investigate the cavitation erosion resistance have been shown. Each type of test design is described and an example of a design is shown. A special attention has been payed to the designs described in the International ASTM Standards: a vibratory design and a cavitating jet cell. There was shown that the design of a test device and the test conditions affect the resistance to cavitation erosion of a material.

scholarly journals Early stage cavitation erosion within ceramics—An experimental investigation

2009 ◽  
Vol 35 (8) ◽  
pp. 3301-3312 ◽  
Author(s):  
G. García-Atance Fatjó ◽  
M. Hadfield ◽  
C. Vieillard ◽  
J. Sekulic
Keyword(s):  
Experimental Investigation ◽  
Cavitation Erosion ◽  
Early Stage

The Cavermod Device: Hydrodynamic Aspects and Erosion Tests

1999 ◽  
Vol 121 (2) ◽  
pp. 305-311 ◽  
Author(s):  
E. G. Filali ◽  
J. M. Michel
Keyword(s):  
Rotation Rate ◽  
Cavitation Erosion ◽  
Companion Paper ◽  
Core Collapse ◽  
Pure Aluminium ◽  
Force Measurements ◽  
Test Device ◽  
Erosion Model ◽  
Erosion Test

The Cavermod (CAVitation ERosion MODel) is an erosion test device first described by Dominguez-Cortazar et al. (1992, 1997). Recently, it was modified in two steps: first by increasing its maximum rotation rate (from 4500 to 8000 rpm) and second by shortening its vapor core (from 156 to 66 mm). This paper plans to present the main results which are obtained in both configurations (long and short vortex) and for “slow” or “rapid” regime of rotation. They mainly concern 1. the hydrodynamic aspects of the vapor core collapse, as deduced from observation of rapid films (evolution of the vortex length, collapse, velocity), 2. the erosion patterns produced on metallic targets such as pure aluminium and copper. A second companion paper will present the results of force measurements in both configuration and an attempt to estimate the local erosive pressures.

Report 2: Investigation of Cavitation Erosion in Non-Aqueous Liquids

1967 ◽  
Vol 182 (7) ◽  
pp. 46-48
Author(s):  
J. M. Hobbs
Keyword(s):  
Cavitation Erosion ◽  
Gas Content ◽  
Experimental Investigations ◽  
Test Liquid ◽  
Test Device ◽  
Lack Of Control ◽  
Fluid Properties ◽  
The Many

Wear due to cavitation in non-aqueous liquids can be serious, leading to premature failures of valves, bearings, and even pumps. Although it can be shown that the collapse of vapour cavities will cause more damage than those containing some gas it is not possible to predict theoretically and with any certainty the stresses produced in materials. Thus, at present, laboratory erosion tests offer the best means of determining the relative behaviour of materials in a single liquid. However, previous experimental investigations using the vibratory cavitation test with different liquids have also been inadequate because of the many variables in the process and the lack of control over the test liquid conditions. An improved test device of the same type has been built at NEL in which temperature, pressure, and gas content can be varied independently. This has eliminated many of the disadvantages of former equipment and permitted a study of the effects of fluid properties to be started.

scholarly journals Numerical Prediction and Experimental Investigation of Cavitation Erosion of Hydraulic Components Using HFC

2020 ◽  
Vol 10 (5) ◽  
Author(s):  
Atena Moosavi ◽  
Sven Osterland ◽  
Dominik Krahl ◽  
Lutz Müller ◽  
Jürgen Weber
Keyword(s):  
Experimental Investigation ◽  
Cavitation Erosion ◽  
Numerical Prediction

New Viscoelastic Magnetic Abrasive and its Surface Finishing Process

2011 ◽  
Vol 314-316 ◽  
pp. 300-303 ◽  
Author(s):  
Wen Hui Li ◽  
Xiu Hong Li
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Practical Problem ◽  
Positive Impact ◽  
Complex Surface ◽  
Surface Finishing ◽  
Simple Test ◽  
Test Device ◽  
Finishing Process ◽  
Magnetic Abrasives

In order to solve the practical problem of deburring and surface finishing of internal hole surface, mold cavity, complex surface, etc., a new viscoelastic magnetic abrasives is proposed based on analysis of field characteristic and existing finishing process. Viscoelastic magnetic abrasives are prepared, and motion locus of abrasives are discussed. An experimental investigation is engaged on direct hole, keyway surface through a simple test device designed by ourselves. Theoretical analysis and experiments show that all burrs is removed, the edges are rounded off and the surface is smooth, the value of surface roughness Ra drops from 0.53μm to 0.05μm. It’s successful application will effectively solve the practical difficulty of deburring and surface finishing for special shapes such as groove, keyway, etc. and fulfil the quantitative finishing of complex surfaces. It will produce a positive impact on precision surface finishing technology.

Combined Numerical and Experimental Investigation of the Cavitation Erosion Process

2015 ◽  
Vol 137 (5) ◽  
Author(s):  
Wang Jian ◽  
Martin Petkovšek ◽  
Liu Houlin ◽  
Brane Širok ◽  
Matevž Dular
Keyword(s):  
Experimental Investigation ◽  
High Pressure ◽  
High Speed ◽  
Cavitation Erosion ◽  
The Other ◽  
Damage Growth ◽  
Erosion Process ◽  
Time Step ◽  
Erosion Damage ◽  
Flow Simulations

We are comparing results of numerical simulations against high-speed simultaneous observations of cavitation and cavitation erosion. We performed fully compressible, cavitating flow simulations to resolve the formation of the shock waves at cloud collapse—these are believed to be directly related to the formation of the damage. Good agreements were noticed between calculations and tests. Two high pressure peaks were found during one cavitation cycle. One relates to the cavitation collapse and the other one corresponds to the cavitation shed off, both contributing to a distinctive stepwise erosion damage growth pattern. Additional, more precise, simulations with much shorter time step were performed to investigate the processes of cavitation collapse and shedding off in more detail. There the importance of small cavitation structures which collapse independently of the main cloud was found. The present work shows a great potential for future development of techniques for accurate predictions of cavitation erosion by numerical means only.

Corrosive Liquid Effects on Cavitation Erosion

1981 ◽  
Vol 25 (04) ◽  
pp. 271-284
Author(s):  
Tsunenori Okada
Keyword(s):  
Experimental Investigation ◽  
Weight Loss ◽  
Fatigue Strength ◽  
Cavitation Erosion ◽  
Test Surface ◽  
Mechanical Impact ◽  
Corrosive Action ◽  
Corrosive Liquid

An experimental Investigation of the effects of corrosive liquids on the cavitation erosion of steels is presented. The macro-effects are described in terms of the weight loss, which is increased by the presence of the corrosive liquids. The micro-effects are discussed from photographs of the test surface showing the characteristic effects of the mechanical impact from the collapsing bubbles and the corrosive action on the material. The effects of the corrosive liquid on the fatigue strength of the material are also discussed.

Effect of Surface Material on the Cavitation Erosion Noise: Experimental Investigation

2009 ◽  
pp. 977-979
Author(s):  
Ge Han ◽  
Chen Haosheng ◽  
Chen Darong ◽  
Yan Dayun
Keyword(s):  
Experimental Investigation ◽  
Cavitation Erosion ◽  
Surface Material ◽  
Effect Of Surface
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