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Showing 1 to 18 of 18 for “"particle ingestion"”.
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Development of a fluorescence based optical diagnostics technique and investigation of particle ingestion and accumulation in the contact region of rotating shaft seals
… Seals maintain lubrication and prevent the ingestion of contaminants into bearing surfaces, allowing high tolerance components to function reliably. Consequently, the performance of seals can be directly linked to the performance, life span and reliability of virtually all equipment of any …
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Effects of Sand Ingestion on the Cooling of Turbine Blade Outer Air Seals
… turbine engines operate in environments where particle ingestion, especially sand ingestion, can affect the cooling of various turbine parts. The most critical areas are in the combustor and the first stage components of the turbine. Gas temperatures in these areas are the highest compared to …
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Predicting Motion of Engine-Ingested Particles Using Deep Neural Networks
… to facilitate the design of gas turbine engine particle separators by reducing the computational expense to accurately simulate the fluid flow and particle motion inside the separator. It has been well-documented that particle ingestion yields many detrimental impacts for gas turbine engines. …
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An image processing technique for erosion analysis on compressor blade geometry
Particle ingestion into aircraft engines is a major concern due to its physical- and performance-related implications; largely due to compressor blade material erosion. Current methods for monitoring this erosion (such as visual tools) lack adequate reliability and consistency, while only providing …
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Experimental Investigation of Initial Onset of Sand Deposition in the Turbine Section of Gas Turbines
Particle ingestion and deposition is an issue of concern for gas turbine engines operating in harsh environments. The ingested particles accelerate the deterioration of engine components and thus reduce its service life. This effect is observed to a greater extent in aircrafts/helicopters operating …
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High resolution scattering measurements for stationary particles
Particle characterization is important to the aerospace field because particle ingestion in propulsion engines can lead to catastrophic failures. It has been shown laser based methodologies can determine size and concentration of spherical particles by using light extinction. However, when one …
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Organosilicate nanoparticles as gene delivery vehicles for bone cells
… The metabolic response of these cells after particle ingestion was also characterized in order to ensure that the osteoblasts retained their phenotype. The expression of various proteins involved in bone formation, such as alkaline phosphatase, osteocalcin, osteopontin and fibronectin was …
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Micromechanics of deformation and abrasive wear of fiber-filled elastomers
… period. During the break-in period, few abrasive particles are able to penetrate the seal's contact band, and no substantial seal wear occurs. During the aggressive wear period, abrasive particles aggregate into distinct clusters which advance at a linear rate and abrasively wear the seal. Filled …
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Application of a Non-intrusive Optical Non-spherical Particle Sizing Sensor at Turboshaft Engine Inlet
Particulate ingestion has been an ongoing issue in the aviation industry as aircraft are required to operate in hostile environments. Ingesting particulates such as sand or dust can erode and damage engine components. This damage will affect the life cycle of parts and compromise the safety of the …
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Optical Field Instrumentation for Characterizing Particle Sampling Sensors
Particle ingestion in gas turbine applications can be detrimental to performance and pose significant safety concerns. Areas of high sand concentration are hazardous to aircraft, requiring precautions like routine inspections and maintenance. The engine failure modes are dependent on particle …
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Soil ingestion by elastomeric seals
… The present work shows that three stages of particle ingestion precede seal erosion, and that seals designed to interfere with each stage exhibit substantially longer operational life. The three stages of failure preceding seal erosion are as follows. The first stage occurs when small soil …
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Development of a Novel Probe for Engine Ingestion Sampling in Parallel With Initial Developments of a High-speed Particle-laden Jet
Particle ingestion remains an important concern for turbine engines, specifically those in aircraft. Sand and related particles tend to become suspended in air, posing an omnipresent health threat to engine components. This issue is most prevalent during operation in sandy environments at low …
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Development of Diagnostic Tools for Use in a Gas Turbine Engine Undergoing Solid Particulate Ingestion
… operations as significant amounts of groundlevel particles can be entrained in the surrounding air and subsequently ingested into the engine. Prolonged exposure to particle ingestion events leads to premature engine wear and, in extreme cases, rapid engine failure. Expanding our current …
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Experimental Investigations of the Onset of Sand Deposits on Hastelloy-X between 1000 C and 1100 C
In many arid regions, particle ingestion can occur within propulsive gas turbines. The ingested particles can severely impact performance and may damage many primary gas path components through erosion or deposition. Characterizing crystalline deposits on metallic substrates can allow for the …
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Evaluation of a Particle Sampling Probe to Measure Mass Concentration in Particle-Laden Flows
Particle ingestion is a prevalent issue for jet engines. During operation, sand and ash particles enter the engine and can cause serious problems, including erosion and buildup of Calcia-Magnesia-Alumina-Silicate (CMAS) deposits. Analyzing the particle mass concentration of the airflow can help …
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Particle Sensing in Gas Turbine Inlets Using Optical Measurements and Machine Learning
… studies have investigated the effects of particle ingestion on the component level, an accurate in-situ measurement technique is needed for a systematic understanding of the effects and real-time engine health monitoring. Optical measurement techniques are attractive for this application …
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A Diagnostic Technique for Particle Characterization Using Laser Light Extinction
… environments have increased risks of micro-sized particle ingestion into engines. The probability of increased sand and dust ingestion results in increased life cycle costs, in addition to increased potential for performance loss. Thus, abilities to accurately characterize inlet sand would be …
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Experimental Investigation of Temperature Effects on Microparticle Sand Rebound Characteristics at Gas Turbine Representative Conditions
When a gas turbine operates in a particle laden environment, such as a desert, small solid particles are ingested into the engine. The ingested sand particles can cause damage to engine components and reduce the service life of the engine. Particle ingestion causes the erosion of metal blades and …