Numerical analysis of partially molten splat during thermal spray process using the finite element method

Zirari, Mounir; El-Hadj, A. Abdellah; Bacha, N.

doi:10.1016/j.apsusc.2009.12.158

Cited by 29 publications

(9 citation statements)

References 13 publications

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“…However, this method is not able to capture the detailed physics during the particle impingement process. The works presented in [9] and [10] are limited to 2D simulations, without details such as substrate heat transfer and solidification respectively, which are crucial elements in determining the splat morphology. Furthermore, a central core is not modeled as a moving solid in both cases.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of molten and semi-molten ceramic impingement by using coupled Eulerian and Lagrangian method

Zhu

Kamnis

2015

Acta Materialia

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Large temperature gradients are present within ceramic powder particles during plasma spray deposition due to their low thermal conductivity. The particles often impinge at the substrate in a semi-molten form which in turn substantially affects the final characteristics of the coating being formed. This study is dedicated to a novel modeling approach of a coupled Eulerian and Lagrangian (CEL) method for both fully molten and semi-molten droplet impingement processes. The simulation provides an insight to the deformation mechanism of the solid core YSZ and illustrates the freezing-induced break-up and spreading at the splat periphery. A 30 μm fully molten YSZ particle and an 80 μm semi-molten YSZ particle with different core sizes and initial velocity ranging from 100 to 240 m/s were examined. The flattened degree for both cases were obtained and compared with experimental and analytical data

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Section: Introductionmentioning

confidence: 99%

Numerical study of molten and semi-molten ceramic impingement by using coupled Eulerian and Lagrangian method

Zhu

Kamnis

2015

Acta Materialia

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“…In numerical studies of solid mechanics, the finite element method (FEM), smooth particle hydrodynamics, and micro-scale dynamic models are commonly applied [10][11][12][13][14][15]. Liu et al used commercial software (Abaqus; ABAQUS Inc., Providence, RI, USA) and FEM to conduct three-dimensional (3D) numerical erosion research; the authors studied the effects of the impact velocity and impact angle of particles with spherical and sharp-edge geometries on erosion, with good consistency seen between numerical and experimental results [16].…”

Section: Introductionmentioning

confidence: 99%

Study of Solid Particle Erosion on Helicopter Rotor Blades Surfaces

et al. 2020

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In this study, titanium alloy (Ti-4Al-1.5Mn), magnesium alloy (Mg-Li9-A3-Zn3), or aluminum alloy (Al7075-T6) were used to construct the shell model of helicopter rotor blade to study the solid particle erosion of helicopter rotor blades. The erosion resistance of the three materials at different angles of attack (6°, 3°, or 0°) and particle collision speeds (70, 150, or 220 m/s) was examined using the finite volume method, the discrete phase method, and erosion models. In addition, the leading edge of the helicopter blades was coated with two types of bionic anti-erosion coating layers (V- and VC-type), in an attempt to improve erosion resistance at the angles of attack and particle collision speeds given above. The results showed that Ti-4Al-1.5Mn had the best erosion resistance at high speed, followed by Al7075-T6 and Mg-Li9-A3-Zn3. The angle of attack appeared to affect only the surface area of the blade erosion, while the erosion rate was not affected. Finally, the results of this article showed that the V-type bionic coating had better erosion resistance than the VC-type coating at the same impact speeds. The angle of attack did not have a significant effect on the erosion rate of the bionic coating.

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“…However, previous experiments have shown that the particles with high velocity and high temperature, as well as the strong jet flux during the thermal spray process, can easily damage the fiber [13,14]. Currently there are two main types of fiber used, according to the classification of the different mechanical cladding, polymer cladding and metal cladding.…”

Section: Introductionmentioning

confidence: 99%

Optical fiber embedding in thermal spray coating promises new smart materials design able to operate under harsh environment

Costil

Pfeiffer

et al. 2014

SPIE Proceedings

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The in-situ detection of temperature or stresses produced by the thermal spraying process is important for both the optimization of the elaboration conditions and the subsequent service monitoring of these systems. Optical fiber sensors are excellent candidates for this area of application since they can be embedded into the layers of several dissimilar materials of smart structures. This work relates mainly to the process of embedding optical fibers into ceramic coatings and to the characteristics of the embedded fiber. Firstly, thermal flame spraying is chosen as the elaboration process. Next, a thermal model is proposed in order to evaluate the thermal strain variation with the temperature during the elaboration process in the structure. Finally, a microscopic observation of the embedded optical fiber in the ceramic coating is reported, the mechanical adhesion strength of the embedded fiber is evaluated and the results of the optical attenuation change during the elaboration process are given. They show that no significant fluctuation of the optical power transmitted in the fiber is observed.

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Numerical analysis of partially molten splat during thermal spray process using the finite element method

Cited by 29 publications

References 13 publications

Numerical study of molten and semi-molten ceramic impingement by using coupled Eulerian and Lagrangian method

Numerical study of molten and semi-molten ceramic impingement by using coupled Eulerian and Lagrangian method

Study of Solid Particle Erosion on Helicopter Rotor Blades Surfaces

Optical fiber embedding in thermal spray coating promises new smart materials design able to operate under harsh environment

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