The Experts below are selected from a list of 3258 Experts worldwide ranked by ideXlab platform
Sandhyarani Biswas - One of the best experts on this subject based on the ideXlab platform.
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Solid Particle Erosion Response Simulation of Alumina Reinforced ZA-27 Metal Matrix Composites
2011Co-Authors: Srimant Kumar Mishra, Sandhyarani Biswas, Alok Satapathy, Amar PatnaikAbstract:Inspired by the biological nervous system, an artificial neural network (ANN) approach is a fascinating computational tool, which can be used to simulate a wide variety of complex engineering problems such as tribo-performance of metal matrix composites (MMCs). In the present investigation, ANN approach is used to predict the Solid Particle Erosion wear behaviour of alumina (Al2O3) reinforced of ZA-27 MMCs. Composites of different compositions with Al2O3 Particle (0, 3, 6 and 9 wt %) reinforced in ZA-27 matrix are prepared by stir casting method. Solid Particle Erosion wear trials are conducted following a well planned experimental schedule based on design-of-experiments (DOE). Significant control factors influencing the wear rate are identified. An ANN approach taking into account training and test procedure is implemented to predict the dependence of wear behaviour on various control factors. The effects of the impact velocity and alumina content on the Erosion rate are studied and predicted using this ANN model.
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Solid Particle Erosion wear characteristics of fiber and particulate filled polymer composites a review
Wear, 2010Co-Authors: Amar Patnaik, Alok Satapathy, Navin Chand, N M Barkoula, Sandhyarani BiswasAbstract:The Solid Particle Erosion behaviour of fiber and particulate filled polymer composites has been reviewed. An overview of the problem of Solid Particle Erosion was given with respect to the processes and modes during Erosion with focus on polymer matrix composites. The new aspects in the experimental studies of Erosion of fiber and particulate filled polymer composites were emphasised in this paper. Various predictions and models proposed to describe the Erosion rate were listed and their suitability was mentioned. Implementation of design of experiments and statistical techniques in analyzing the Erosion behaviour of composites was discussed. Recent findings on Erosion response of multi-component hybrid composites were also presented. Recommendations were given on how to solve some open questions related to the structure-Erosion resistance relationships for polymers and polymer based hybrid composites.
Rachel Collier - One of the best experts on this subject based on the ideXlab platform.
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sliding wear and Solid Particle Erosion resistance of a novel high tungsten stellite alloy
Wear, 2015Co-Authors: Q L Zhang, Rachel CollierAbstract:Abstract A high-tungsten Stellite alloy is developed for wear and Erosion resistance application in this research, taking the advantage of tungsten in Stellite alloys. The microstructure of this alloy is analyzed using SEM/EDX and XRD. The sliding wear resistance of the alloy is evaluated on a pin-on-disc tribometer and the Solid-Particle Erosion behavior is investigated using a micro-blasting jet machine at two Particle impact velocities (84 and 98 m s −1 ) and two impingement angles (30° and 90°). The experimental results of the alloy are compared with those of well-known wear-resistant Stellite 3 and Stellite 6. The worn and eroded surfaces of the specimens are studied using SEM/EDX to explore the wear and Erosion mechanisms of this new alloy. The experimental results show that this novel high-tungsten Stellite alloy has superior sliding wear and Solid-Particle Erosion resistance to Stellite 3 and Stellite 6, owing to the formation of large amounts of large-size W-rich carbides in the alloy.
Amar Patnaik - One of the best experts on this subject based on the ideXlab platform.
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Solid Particle Erosion Response Simulation of Alumina Reinforced ZA-27 Metal Matrix Composites
2011Co-Authors: Srimant Kumar Mishra, Sandhyarani Biswas, Alok Satapathy, Amar PatnaikAbstract:Inspired by the biological nervous system, an artificial neural network (ANN) approach is a fascinating computational tool, which can be used to simulate a wide variety of complex engineering problems such as tribo-performance of metal matrix composites (MMCs). In the present investigation, ANN approach is used to predict the Solid Particle Erosion wear behaviour of alumina (Al2O3) reinforced of ZA-27 MMCs. Composites of different compositions with Al2O3 Particle (0, 3, 6 and 9 wt %) reinforced in ZA-27 matrix are prepared by stir casting method. Solid Particle Erosion wear trials are conducted following a well planned experimental schedule based on design-of-experiments (DOE). Significant control factors influencing the wear rate are identified. An ANN approach taking into account training and test procedure is implemented to predict the dependence of wear behaviour on various control factors. The effects of the impact velocity and alumina content on the Erosion rate are studied and predicted using this ANN model.
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Solid Particle Erosion wear characteristics of fiber and particulate filled polymer composites a review
Wear, 2010Co-Authors: Amar Patnaik, Alok Satapathy, Navin Chand, N M Barkoula, Sandhyarani BiswasAbstract:The Solid Particle Erosion behaviour of fiber and particulate filled polymer composites has been reviewed. An overview of the problem of Solid Particle Erosion was given with respect to the processes and modes during Erosion with focus on polymer matrix composites. The new aspects in the experimental studies of Erosion of fiber and particulate filled polymer composites were emphasised in this paper. Various predictions and models proposed to describe the Erosion rate were listed and their suitability was mentioned. Implementation of design of experiments and statistical techniques in analyzing the Erosion behaviour of composites was discussed. Recent findings on Erosion response of multi-component hybrid composites were also presented. Recommendations were given on how to solve some open questions related to the structure-Erosion resistance relationships for polymers and polymer based hybrid composites.
S Prakash - One of the best experts on this subject based on the ideXlab platform.
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Solid Particle Erosion of hvof sprayed nicr and stellite 6 coatings
Surface & Coatings Technology, 2007Co-Authors: Hazoor Singh Sidhu, Buta Singh Sidhu, S PrakashAbstract:Abstract Solid Particle Erosion behavior of the HVOF deposited NiCr and Stellite-6, coatings on boiler tube steels was evaluated. The study was conducted, using an air jet Erosion test rig at a velocity of 26 m/s and impingement angle of 30° and 90°, on uncoated as well as HVOF spray coated boiler tube steel (GrA1) at 250 °C. The coatings were harder as compared to substrate steel. Scanning electron microscopy (SEM) technique was used to analyse the eroded surface. Mass losses of the coatings were found marginally higher than the boiler tube steel.
A. P. Harsha - One of the best experts on this subject based on the ideXlab platform.
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Solid-Particle Erosion behavior of high-performance thermoplastic polymers
Journal of Materials Science, 2008Co-Authors: Suresh Arjula, A. P. Harsha, M K GhoshAbstract: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.e., polyetherimide, polyetheretherketone, polyetherketone, polyphenylene sulfide, polyethersulfone, polysulfone, and ultrahigh molecular weight polyethylene). Steady-state Erosion rates of these polymers have been evaluated at different impact angles (15–90°) and impact velocities (25–66 m/s). Silica sand of Particle size 200 ± 50 μm was used as the erodent. These polymers have exhibited maximum Erosion rate ( E _max) at 30° impact angle indicating ductile Erosion behavior. Some of these polymers have shown an incubation behavior at lower impact velocities for an impact angle of 90°. Correlations among steady-state Erosion rate and mechanical properties and glass transition temperature ( T _g) were established. Morphology of eroded surfaces was examined using scanning electron microscopy and possible wear mechanisms were discussed.
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Solid Particle Erosion behaviour of various polyaryletherketone composites
Wear, 2003Co-Authors: A. P. Harsha, U S Tewari, B VenkatramanAbstract:Abstract The Solid Particle Erosion behaviour of various polyaryletherketones (PAEKs) and their short fibre reinforced composites has been characterised. The Erosion rates (ERs) of these composites have been evaluated at different impingement angles and impact velocities. Silica sand Particles of size ranging between 150 and 212 μm were used as erodent. Neat polyetheretherketone (PEEK) and 20% glass fibre (GF) reinforced PEEK showed peak Erosion at 30° impingement angle whereas other PAEK matrix and their composites showed peak Erosion at 60° impingement angle. The ketone/ether ratios among the selected polyaryletherketones showed significant influence on Erosion behaviour at different impingement velocity and mass of erodent. Better correlation was observed between steady-state Erosion rate and relevant mechanical properties. The morphology of erodent surfaces was examined by using scanning electron microscopy (SEM). Possible Erosion mechanisms are discussed.
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Solid Particle Erosion of unidirectional carbon fibre reinforced polyetheretherketone composites
Wear, 2002Co-Authors: U S Tewari, A. P. Harsha, A M Hager, K. FriedrichAbstract:Abstract The Solid Particle Erosion behaviour of unidirectional carbon fibre (CF) reinforced polyetheretherketone (PEEK) composites has been characterised. The Erosion rates of these composites have been evaluated at different impingement angles (15–90°) and at three different fibre orientations (0, 45, and 90°). The Particles used for the Erosion measurements were steel balls with diameter of 300–500 μm and impact velocities of 45 and 85 m/s. The unidirectional CF reinforced PEEK composites showed semi-ductile Erosion behaviour, with maximum Erosion rate at 60° impingement angle. The fibre orientations had a significant influence on Erosion rate. The morphology of eroded surfaces was examined by using scanning electron microscopy (SEM). Possible Erosion mechanisms are discussed.
