by National Aeronautics and Space Administration, Scientific and Technical Information Branch in [Washington, D.C.?] .
Written in English
|Statement||P. Veerabhadra Rao and Donald H. Buckley|
|Series||NASA technical paper -- 2339|
|Contributions||Buckley, Donald H, United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch|
|The Physical Object|
Extensive data analyses from venturi, magnetostriction (stationary and oscillating specimens), liquid drop, and jet impact devices appear to conform to this relation. A normalization technique using cavitation and liquid impingement erosion data is also presented to facilitate prediction. Research article Full text access Unified empirical relations for cavitation and liquid impingement erosion processes. the erosion process. Further, it was found that erosion results with other types of erosion devices-including Empirical Power-Law Relationships magnetostriction, venturi, and liquid impingement Figure 3 presents a typical set of plots of average devices-conform to this type of formulation and erosion rate (total volume loss/total exposure time). erosion of a baseline material, and it is found that the prediited erosion would be detrimental. either t'le material Mv be changed at the design stage or more accurate overhaul prriods may be established. A method for erosion-rate-data curve fitting is presented as normal ired cwlat ive average erosion rate as a function of nomallzed Size: KB.
These values were selected based on the study of Hattori et al. , where it was shown that cavitation erosion prevails over erosion caused by direct liquid impingement when the jet velocity is. Discussion of Erosion Resistance— Liquid impingement erosion and cavitation erosion are, broadly speaking, similar processes and the relative resistance of materials to them is similar. In both, the damage is associated with repeated, small-scale, high-intensity pressure pulses acting on . DEVELOPMENT OF A CAVITATION EROSION RESISTANT ADVANCED MATERIAL SYSTEM By Kendrick H. Light B.S. University of Maine, A THESIS Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science (in Mechanical Engineering) The Graduate School The University of Maine August, Advisory Committee:File Size: 2MB. Heymann, F. J., liOn the Time Dependance of the Rate of Erosion Due to Liquid Impact or Cavitation, It Pr-o c. Syrnp, Erosion by Cavitation or Impingement, ASTM Special Publica tion Author: Alagu Thiruvengadam.
erosion by fluid flowing. Until today, many pipe rupture accidents have been reported and most of them are caused by pipe wall thinning. One of the main cause of pipe wall thinning phenomenon of power generation facili-ties is the liquid droplet impingement erosion (LDIE). . Abstract. In this chapter, an introduction to cavitation and cavitation erosion is presented. Cavitation involves the development of various types of vapor structures (such as attached cavities, travelling bubbles, vortical cavities, bubble clouds) in liquid flow due to a drop in the local pressure below a critical value usually close to the vapor by: In this work, the Liquid Impingement Erosion (LIE) performances of deep-rolling (DR) treated and non-treated Ti64 were investigated. Various erosion stages, from the incubation to the terminal erosion stages, could be observed. A full factorial design of experiments was used to study the effect of DR process parameters (Feed Rate, Spindle Velocity, Number of Passes, Pressure) on the residual Cited by: Both cavitation erosion and liquid impingement erosion are phenomena that can cause pipe wall thinning in power plants. The Code for Power Generation Facilities, Rules on Pipe Wall Thinning Management , was published by the JSME (Japan Society of Mechanical Engineers) in The code says that cavitation erosion shall be prevented either in theCited by: