Optimization and prediction of AZ91D stellite-6 coated magnesium alloy using Box Behnken design and hybrid deep belief network

Mathivanan, Karthik; Thirumalaikumarasamy, D.; Mohankumar, Ashokkumar; B.Deepak, Sivanandh; Mathanbabu, M.

doi:10.1016/j.jmrt.2021.09.069

Cited by 19 publications

(10 citation statements)

References 32 publications

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“…It shows that the hardness decreases as the porosities increase, owing to the presence of pores, splats, and cracks. The same microstructural properties of APS deposits were observed by many researchers [21][22][23][24][25][26].…”

Section: Coating Properties Evaluationsupporting

confidence: 79%

“…Due to the extensive range of variables, the experimental circumstances have been maximized using three variables, and five levels of central composite rotatable design (CCD) to reduce the overall run of the experiment. The optimization of the APS process parameters was carried out through Design Expert V 13.0 statistical software [21][22][23][24][25]. The APS coating parameter range is listed in table 2 and the experimental design matrix for the 20 deposits for the coating with various combinations of APS process parameters and their responses is listed in table 3.…”

Section: Development Of Empirical Relationshipsmentioning

confidence: 99%

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Optimization of plasma spray process variables to attain the minimum porosity and maximum hardness of the LZ/YSZ thermal barrier coatings utilizing the response surface approach

Mathanbabu¹,

Thirumalaikumarasamy²,

Tamilselvi³

et al. 2022

Mater. Res. Express

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Lanthanum zirconate (LZ) has emerged as a novel thermal barrier coating (TBC) material because of its higher temperature phase stability, and low sintering ability than the current standard yttria-stabilized zirconia (YSZ). In order to combine the advantages, LZ and YSZ feedstock powders are blended with predetermined weight ratios (50:50) as composite coatings. The leading issue in developing the composite coating using the atmospheric plasma spray method (APS) is finding the optimum range of input parameters to attain the desired coating properties. This issue can be resolved by developing empirical relations to find the porosity and micro hardness of the coating by the atmospheric plasma spray method (APS). Spray parameters such as input power, spray distance, and powder feed rate play a vital part in determining the coating quality. Three variables and five levels of central composite rotatable design (CCD) to reduce the overall run of the experiment were utilized in the research. The empirical relations were predicted to find the porosity and micro hardness of the specimens with APS process parameters, and the empirical relations were examined through ANOVA. Optimizing the plasma spray parameters was done using response surface methodology (RSM), which provides the minimum porosity and maximum hardness. It is validated using the surface response graphs, contour plots, and overlay plots. As a result, the input power has the greatest impact on the coating properties among the three variables, and the standoff distance and powder feed rate are the subsequent important spray parameters.

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Section: Coating Properties Evaluationsupporting

confidence: 79%

Section: Development Of Empirical Relationshipsmentioning

confidence: 99%

Optimization of plasma spray process variables to attain the minimum porosity and maximum hardness of the LZ/YSZ thermal barrier coatings utilizing the response surface approach

Mathanbabu¹,

Thirumalaikumarasamy²,

Tamilselvi³

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…A dense coating gives a minimum level of porosity with maximum hardness. Recommended particle size and optimised processing parameters make it easy to achieve good surface malting of particles during in-flight [26,27]. This results in a good, desired splat formation.…”

Section: Investigation Of Optimised Coatingmentioning

confidence: 99%

Optimisation of HVOF Spray Process Parameters to Achieve Minimum Porosity and Maximum Hardness in WC-10Ni-5Cr Coatings

et al. 2022

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High-velocity oxy-fuel (HVOF) spray coating plays a major role in many surface treatment methods, which tend to improve erosion and corrosion resistance properties. HVOF is well known for its dense and high-quality coating ability. This is due to the less in-flight exposure time, which tends to have less oxide content because of its high-velocity properties. Among the number of process parameters, porosity and hardness are predominant factors while considering wear rate and corrosion behaviour analysis. The current study aims to optimise HVOF process parameters to obtain low levels of porosity and high hardness values in the WC-10Ni-5Cr coating sprayed on 35 Mo Cr steel. The flow rates of oxygen, LPG, coating powder feed rate and spray distance are selected in this study as these have a superior influence on the final condition of the coating. Statistical tools such as the design of experiments (DoE), analysis of variants and response surface methodology (RSM) were used to achieve the desired results. As per the result analysis, the oxygen flow rate has a higher effect on the porosity value and microhardness value of the coating.

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“…Te bioinspired sandwich construction on an aluminium face sheet with glass fbre reinforcement, epoxy resin matrix, and pet foam core material is the focus of this research [17][18][19][20][21][22][23][24][25][26][27][28][29][30]. Te materials' characteristics were determined experimentally in accordance with ASTM standards [31][32][33][34][35][36][37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Sandwich Structure in Composite Panels

Sampathkumar¹,

Mohankumar²,

Teekaraman

et al. 2023

Advances in Materials Science and Engineering

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The phenomenon of separation into constituent layers connecting the core and laminate of a composite sandwich complex is a vital complication that leads to early failure of such material. The direction of the sandwich construction's exfoliation rigidity is increased between interlaminar low fiber augmentation. The bioinspired technique of hybrid material layers was used on an aluminium face sheet with an interlayer composition of PET foam core and glass fabric of a material that appears to have greater potential as a flimsy substitute for materials currently used in automotive, aeronautical, and marine applications. This examination seeks to develop the making of such material along the retardation in fibre supplements. Fibre bridging has been recognized as an important appliance in the progress of this operating procedure. Consequently, this method points to promoting the event of fibre bridging by differing aggregates, including the mass and extent of augmented fibres and the quantity of epoxy resin applied. A few advancements were made to the production methods, and though the outcomes for the resisting ability of specimens were found to be indecisive, it was found that the layer separation hardness had even improved. This was confirmed through the operation of scanning electron microscopy and also predicted the mechanically peeled material surfaces which identified the adhesive strength variations with respect to the face sheet surface modified with the sand blasting process. The analysis also revealed the need for further research into optimizing the attachment between aluminium sheet and pet foam and glass fabric based hybrid sandwich panels.

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Optimization and prediction of AZ91D stellite-6 coated magnesium alloy using Box Behnken design and hybrid deep belief network

Cited by 19 publications

References 32 publications

Optimization of plasma spray process variables to attain the minimum porosity and maximum hardness of the LZ/YSZ thermal barrier coatings utilizing the response surface approach

Optimization of plasma spray process variables to attain the minimum porosity and maximum hardness of the LZ/YSZ thermal barrier coatings utilizing the response surface approach

Optimisation of HVOF Spray Process Parameters to Achieve Minimum Porosity and Maximum Hardness in WC-10Ni-5Cr Coatings

Bioinspired Sandwich Structure in Composite Panels

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