Fabrication of bi-layer PMMA and aluminum 6061-T6 laminates by laser transmission welding: Performance prediction and optimization

Hydrothermal carbonization (HTC) technologies for producing value-added carbonaceous material (hydrochar) from coal waste and sewage sludge (SS) waste might be a long-term recycling strategy for hydrogen storage applications, cutting disposal costs and solving waste disposal difficulties. In this study, hydrochars (HC) with high carbon content were produced using a combination of optimal HTC (HTC and Co-HTC) and chemical activation of coal tailings (CT), coal slurry (CS), and a mixture of coal discard and sewage sludge (CB). At 850 °C and 800 °C, respectively, with a KOH/HC ratio of 4:1 and a residence time of 135 min, activated carbons (ACs) with the highest Brunauer–Emmett–Teller specific surface (SBET) of 2299.25 m2g− 1 and 2243.57 m2g− 1 were obtained. The hydrogen adsorption capability of the produced ACs was further studied using gas adsorption isotherms at 77 K. At 35 bars, the values of hydrogen adsorbed onto AC-HCT (AC obtained from HTC of CT), AC-HCS (AC obtained from HTC of CS), and AC-HCB (AC obtained from HTC of the blending of coal discard (CD) and SS) were approximately 6.12%, 6.8%, and 6.57% in weight, respectively. Furthermore, the cost of producing synthetic ACs for hydrogen storage is equivalent to the cost of commercial carbons. Furthermore, the high proportion of carbon retained (>70%) in ACs synthesized by HTC from CD and SS precursors should restrict their potential carbon emissions.

show abstract

“…3, 4, and 5). This indicated that the suggested models may be used to predict the S BET of the produced ACs [45].…”

Section: Optimum Operating Conditionsmentioning

confidence: 91%

Systematic physicochemical characterization, carbon balance and cost of production analyses of activated carbons derived from (Co)-HTC of coal discards and sewage sludge for hydrogen storage applications

Kahilu

Bada

Mulopo

2023

Waste Dispos. Sustain. Energy

View full text Add to dashboard Cite

show abstract

“…It was also applied in the incremental forming to get the lower spring back and higher formability of Aluminum 5083 [9], as well as in the friction stir welding of aluminum 6061-T6 with water cooling to achieve optimal microstructural and mechanical properties, as demonstrated by Fathi, Jalal, et al [10]. As well, Bideskan and colleagues harnessed RSM to fabricate bi-layer PMMA and aluminum 6061-T6 laminates through laser transmission, aiming to determine the best adhesive condition for this bimaterial [11]. Additionally, RSM played a pivotal role in the analysis of friction stir additive manufacturing, particularly in reinforcing ABS with the addition of nano-silica, as demonstrated by Shirkharkolaei, E. M., et al [12].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Shot-Peening Parameters for Steel AISI 316L via Response Surface Methodology (RSM): Introducing two novel mechanical aspects

Ebrahimzadeh,

Peral,

Pariente

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Shot peening (SP) is a surface modification technique employed to enhance and modify the mechanical properties of metals by inducing compressive residual stresses on the material's surface. AISI 316L stainless steel is a commonly used material in many applications due to its excellent corrosion resistance, weldability and good mechanical properties. The optimization of SP parameters can lead to improved mechanical properties and better performance of AISI 316L. Response surface methodology (RSM) is a statistical method that is used to optimize SP parameters and to study the effect of these variables on the mechanical properties of the steel. RSM involves fitting a mathematical model to the experimental data to identify the significant factors involved and their interactions, and the provided model was the applied to optimize the process attributes. The SP factors that were optimized in this particular investigation using the RSM include coverage time, shot velocity (air pressure), while shot ball size, SP distance and shot angle were maintained constant. The studied mechanical properties include cumulative compressive residual stress (CCRS) and Cumulative Full Width at Half Maximum (CFWHM) as two novel items for researchers, these pioneering and unique conditions present the possibility of acquiring surface charts depicting residual stress distributions, meanwhile Austenite transformation to Martensite due to hard working of SP, Microhardness, and amount of roughness investigated. The effects of SP on these mechanical features were investigated by performing experiments with different parameter combinations and analyzing the results using RSM.

show abstract

Spot Joining of PVC to Aluminum Sheets via Cold Forward Extrusion

Abdullah,

Ridha,

Mejbel

et al. 2023

Exp Tech

View full text Add to dashboard Cite

Fabrication of bi-layer PMMA and aluminum 6061-T6 laminates by laser transmission welding: Performance prediction and optimization

Cited by 10 publications

References 18 publications

Systematic physicochemical characterization, carbon balance and cost of production analyses of activated carbons derived from (Co)-HTC of coal discards and sewage sludge for hydrogen storage applications

Systematic physicochemical characterization, carbon balance and cost of production analyses of activated carbons derived from (Co)-HTC of coal discards and sewage sludge for hydrogen storage applications

Optimization of Shot-Peening Parameters for Steel AISI 316L via Response Surface Methodology (RSM): Introducing two novel mechanical aspects

Spot Joining of PVC to Aluminum Sheets via Cold Forward Extrusion

Contact Info

Product

Resources

About