The aim of this experimentation was essentially to know the behavior of these materials against solid particle erosion and compare their erosion resistance. Based on the airflow and particle flow modeling and prediction, statistic results of particlewall impact and erosion status are given in figure 1. In addition, the functionality of both, the rig and the velocity measurement method was evaluated. In the solid particle erosion process of polymers and their composites, parameters like fiber and filler type, particle and fabric content, fiber orientation, fiber length, impingement angle, impact velocity, erodent mass flow, erodent size, and the interfacial bonding between fiber and matrix have strong influence on the erosion behavior. Rain and solid particle erosion damage mechanisms and materials evaluations dr.
Pdf solidparticle erosion behavior of highperformance. The causes and possible solutions of solid particles erosion of the steam path components to reducing it substantially are presented. Solid particle erosion is a common mode of material degradation in many industries such as petroleum, chemical, aerospace, and power generation, which caused great economic losses. Solid particle erosion is a dynamic process which causes material removal from a target surface due to impingement of fast moving solid particles. When a particle hits a brittle surface, it creates lateral and radial cracks. Dtic august 1986 0 fct e jan 0 6 1993 final report. Modeling and numerical analysis of the solid particle erosion. The wear resistance of several thermoplastic polyurethanes tpus having different chemical nature and micronscale arrangement of the hard and soft segments has been investigated by means of erosion and abrasion tests. In this work, the performance of different metallic materials has been analyzed. Solid particle erosion behaviour of tin coating on aisi. Solid particle sand erosion testing was conducted by the university of dayton research institute to determine the erosion resistance of materials currently used on the leading edges of army.
Solid particle erosion behavior of volcanic ashpvc composites o. May 22, 2012 numerical prediction of erosion distributions and solid particle trajectories in elbows for gassolid flow journal of natural gas science and engineering, vol. Pdf the present investigation reports about, the solid particle erosion behaviour of randomly oriented short eglass, carbon fibre and solid. In this particular case, the eroded surface was completely covered with the erosion debris in the form of flakes or platelets. Erosioncorrosion of materials in elevatedtemperature service ch. Particle depositions in bends mainly happen on the outer bend walls as shown in figure 1 and previous research results.
Numerical prediction of erosion distributions and solid particle trajectories in elbows for gassolid flow journal of natural gas science and engineering, vol. Blade surface roughness by erosion steam turbine 9. Solid particle erosion of thermal spray and physical vapour deposition thermal barrier coatings. Walley physics and chemistry of solids cavendish laboratory madingley road cambridge cb3 ohe, u. Detailed erosion magnitude and locations can be interpreted. Erosion prediction in turbomachinery resulting from. Venkatramanb a industrial tribology machine dynamics and maintenance engineering centre, indian institute of technology. For fouling to occur, a particle has to strike a surfaceand stick to that. It has been suggested that in brittle material, erosion is due to crack formation srinivasan and scattergood, 1988, sundararajan, 1991, kleis and kulu, 2008. Evaluation of solid particle erosion equations and models for. Effects of erodent particle characteristics on the erosion of steel ch.
Measurement of erosion rate solid particle erosion resistance was characterized with volume erosion rate, which was defined as the volume loss of sample divided by the mass of erosion particles mm3g and expressed by equation 116,17 v m 1 m 2 r m 3. Analysis of solid particle surface impact behavior in. Solid particle erosion how is solid particle erosion. Dec 30, 2011 solid particle sand erosion testing was conducted by the university of dayton research institute to determine the erosion resistance of materials currently used on the leading edges of army aviation rotor blades of aircraft in southwest asia swa. Wiederhorn a11ttbddb nationalmeasurementlaboratory centerformaterialsscience nationalbureauofstandards january 1979. Cavitation erosion damage caused by the repeated nucleation, growth and violent collapse of cavities, or bubbles, in a liquid. Solid particle erosion and erosive wear research papers. Although various methods of coating are tried and used for protection against erosion, thermal sprayed coating for such purpose is the most widely used method. Coban kocaeli universit,y school of civil viation,a 41285 izmit, urktey in this study an attempt has been made to evaluate the solid particle erosion behavior of pvc based composites with ariousv volcanic ash av concentrations 5, 10, 15, 20 and 25 wt. Density density is one of the most important factors determining the properties of the composites and it depends on the relative proportion of matrix and reinforcing materials.
Evaluation of solid particle erosion equations and models. Aiming at this problem, combined with the theory of liquid solid twophase flow and erosion wear, the wear prediction model of aluminum alloy sliding valve wall is established based on computational fluid dynamics, and the effects of turbulence and wall materials, particle size distribution, and particle shape on particle motion are discussed. Venkatramanb a industrial tribology machine dynamics and maintenance engineering centre, indian institute of technology, hauzkhas, new delhi 110016, india defence metallurgical research laboratory, kanchanbagh, hyderabad 500058, india. Modeling and simulation of solid particle erosion of protective films. In case of longterm continuous operation, 1st stage nozzle may experience solid particle erosion due to scales from inlet steam piping. In addition, the solid particle erosion characteristics of. Thermoplastic polyurethanecarbon black nanocomposite coating.
View solid particle erosion and erosive wear research papers on academia. Conservation practices are designed to either reduce the wind force at the soil surface or create a soil surface more resistant to wind forces. Solid particle erosion of short glass fiber reinforced. Distribution of the erosion rate per impacted particle can further demonstrate the particle erosion picture on bend walls.
High hardness, excellent wear and corrosion resistance enable them to significantly improve tool life. Solid particle erosion water droplet erosion slurry erosion loss of a material exposed to a. Many conservation practices can be implemented to control wind erosion. Time dependence of solidparticle impingement erosion of an. Time dependence of solidparticle impingement erosion of. Erosion and erosioncorrosion of steels at elevated temperatures ch.
Erosion and erosion corrosion of steels at elevated temperatures ch. Solid particle erosion occurrence, prediction and control ilmar. The erosion of ductile metals by solid particle impact. Solid particle erosion tests were carried out to study the effect of matrix material, impact angle, and impact velocity on the erosion behavior of seven types of thermoplastic neat polymers i. Tpu has the mechanical properties of rubber and can be. Numerical simulation of solid particle erosion in aluminum. The erosion of a surface by a stream of solid particles is examined by considering the arrival times of the particles on the surface. Wiederhorn a11ttbddb nationalmeasurementlaboratory centerformaterialsscience nationalbureauofstandards january 1979 interimreport4c 100,u56 781575 c. Different models have been proposed that allow estimations of the stresses that a moving particle will impose on a target 11. Among them, thermoplastic polyurethane tpu, a segmented copolymer characterized by a sequence of hard and soft blocks, has attracted signi. Morphology and solid particle erosion wear behavior of red. In some cases solid particle erosion is a useful phenomenon, as in sandblasting and highspeed abrasive water jet cutting, but it is a serious problem in many engineering systems, including steam and jet turbines, pipelines and valves carrying particulate matter. The abrasive particle used was silicon carbide sic of an. The process reveals negative results such as wear of components, surface roughening, surface degradation, macroscopic scooping appearance, and reduction in functional life of the structure.
In the oil and gas industry, solid particle erosion may be a major problem in production and transportation. In relation to research on solid particle erosion on pvd nitride coatings, several researchers have conducted experimental works. Solidparticle erosion tests were carried out to study the effect of matrix material, impact angle, and impact velocity on the erosion behavior of seven types of thermoplastic neat polymers i. Applying numerical cfd simulations excessive solid particle erosion damage of the blades tenons, wheel filets, rotor labyrinth seals and main stop valves were studied and steamsolid particles flow conditions which play a main role in the erosion process determined. May 07, 2019 solid particle impingement test astm g76. Keywords solid particle erosion, polymer matrix composites, metal. Experimental investigation and analytical modeling of solid. Experimental investigation and analytical modeling of. Solid particle erosion behaviour of various polyaryletherketone composites a. Oct 17, 2005 the particle size shows negligible effect on the erosion rate at high velocity values and the large. Solid particle erosion spe is a wear process where particles strike against surfaces and promote material loss. Solid particle erosion occurrence, prediction and control.
Solid particle erosion is the loss of material that results from repeated impacts of small, solid particles. Depending on the oil and gas production condition, solid particles may be present in the flow. Solid particle erosion of short glass fiber reinforced polyester composite 4. Occurrence, prediction and control collects together the. Ceramic materials eroded at an impingement angle of 90 exhibit a rough, chipped surface. Information about the openaccess article solid particle erosion of plasma sprayed ceramic coatings in doaj. Pdf evaluation of solid particle erosion equations and.
Solid particle erosion and erosioncorrosion of materials levy, alan on. The particle size shows negligible effect on the erosion rate at high velocity values and the large. Abstract the goal of this work is to provide an evaluation of the uncertainties in the calculation and measurement of erosion caused by solid particles that are entrained in the produced fluids in the oil and gas industry. In this research a group of stellite alloys that are commonly employed or potentially materials for erosion resistance application are studied under solidparticle erosion test. Solid particle erosion testing of helicopter rotor blade. Application of diffusion treatment against solid particle. Sinceangularparticleseitherdisplacemorematerial into the crater lip where it becomesvulnerable to furthererosion or actually. Solid particle erosion spe is a loss of material during repetitive impacts of solid particles and one of the primary reasons for the damage of power generation components. Solid particle erosion of various thermoset and thermoplastic polymerbased composites has been investigated 27,28. The aim of this study is to investigate the solid particle erosion behavior in the second elbow. Introduction the production of sand together with the reservoir fluid has become one of the major concerns in. Solid particle erosion on different metallic materials intechopen. Enhanced solid particle erosion properties of thermoplastic. Solid particle admission is one of the principal damage and failure mechanisms in turbomachines such as gas turbines, axial, and centrifugal.
Experimental and numerical study on solid particle erosion in. The flue gas turbine is one of the important energysaving equipments in petrochemical enterprise. Nbs publications nbsir781575 erosionbysolidparticle impact a. A new phenomenological model for single particle erosion. Erosion corrosion of materials in elevatedtemperature service ch. The average roughness ra in each specimen before testing was 1 m. Occurrence, prediction and control collects together the work of more than industriallysupported research projects conducted over 50 years on erosion at the tallinn technical university, estonia now the tallinn university of technology, much of which is. Solid particle erosion is an important material degradation mechanism. Thermoplastic polyurethanecarbon black nanocomposite. Erosion is a wear process, in which surface damage is caused by the repeated application of high localised stresses. Solid particle erosion on different metallic materials. Solid particle erosion behavior of volcanic ashpvc composites.
Article information, pdf download for solid particle erosion of composite. Occurrence, prediction and control collects together the work of more than industriallysupported research projects conducted over 50 years on erosion at the tallinn technical university, estonia now the tallinn university of technology, much of which is previously unpublished in english. Pdf solid particle erosion and viscoelastic properties. Solid particles are in many cases present in hydropower systems, and can cause severe damage to system components. Occurrence, prediction and control collects together the work of more than industriallysupported research projects conducted over 50 years on erosion at the tallinn technical university, estonia now the tallinn university of technology, much of which is previously. Conclusions regarding the present state of understanding of erosion are given. The samples had a rectangular shape with dimensions of 50 x 25 mm2 and 3 mm in thickness. Field physics and chemistry of solids, cavendish laboratory, madingley road, cambridge, england communicated by d. The particles in liquidsolid or gassolid twophase flow are inevitable to impact the pipe wall, thus forming particle impact erosion and finally.
Experimental and numerical study on solid particle erosion. A solid particle of a given density and size that is carried by the flow in a compressor or turbine ideally follows the flow streamline and should never impact with any statorsrotor blades or walls. The treatment first proposes a new concept, an impact zone, and then considers the arrival of the particles on one zone as a queuing process. Combating of the solid particle erosion in a steam. Aiming at this problem, combined with the theory of liquidsolid twophase flow and erosion wear, the wear prediction model of aluminum alloy sliding valve wall is established based on computational fluid dynamics, and the effects of turbulence and wall materials, particle size distribution, and particle shape on particle motion are discussed. Many researchers has observed that during the impact the target can be locally scratched. Erosion by solid particle impact is a problem of great practical significance which can result in component failures in, for example, turbines and energy conversion systems. Introduction the production of sand together with the reservoir fluid has become one of. Studies of erosive wear by solid particle impingement involve the measurement of several significant experimental parameters, such as particle velocity, particle. Pdf solid particle erosion of thermal spray and physical.
Solid particle erosion on different metallic materials 65 ground using sic emery paper grade 1200. The results indicated that the erosion and penetration rates are insignificant at the lower end of the velocity range. Modeling and simulation of solid particle erosion of. In the experimental study using a stateofart ultrasonic technique, erosion magnitudes in two standard 4inch elbows separated by a distance of 10 pipe diameter have been measured. Solid particle erosion resistance and high strain rate. Erosion definition the loss of material that results from repeated impacts of small, solid particles. Solid particle sand erosion testing was conducted by the university of dayton research institute to determine the erosion resistance of materials currently used on the leading edges of army aviation rotor blades of aircraft in southwest asia swa.
An analysis of solid particle erosion mechanisms iopscience. Pdf studying the parameters of the solid particle erosion and. In this research a group of stellite alloys that are commonly employed or potentially materials for erosion resistance application are studied under solid particle erosion test. Solid particle erosion of thermal sprayed coatings. Solid particle erosion an overview sciencedirect topics. More than 25% of all boiler tube failures are caused by solid particle erosion 11 and, therefore, the design and proper. This figure shows the average erosion rate per impacted particle on the curved wall for each inlet velocity and particle diameter conditions. On the other hand, diffusion treatment technology applied to get high resistance effect against solid particle erosion.
Unlike the solid particle erosion mechanism for ductile materials, there is wide acceptance of the erosion mechanism for brittle material. Solid particle erosion and erosion corrosion of materials levy, alan on. Solid particle erosion water droplet erosion slurry erosion loss of a material exposed to a high velocity stream of slurry mixture of solid particles and liquids. Effects of mechanical properties of metals on erosion ch.
Solid particle erosion and erosioncorrosion of materials. Ramesh talreja among many useful properties of elastomers, one is their ability to absorb energy by deforming to large strains without fracturing. Modeling and numerical analysis of the solid particle. Application of diffusion treatment against solid particle erosion reason for suggestion. In this chapter, evolution of thermal sprayed coating, erosion testin.
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