Application of Hybrid Manufacturing processes in microfabrication

Krimpenis, A. A.; Noeas, Georgios D.

doi:10.1016/j.jmapro.2022.06.009

Cited by 14 publications

(12 citation statements)

References 45 publications

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“…This, as artisans will appreciate, enables construction of very small power sources. Channels and cavities may be formed in the wafers through conventional microfabrication techniques [51,52]. For example, diamond machining of a silicon carbide and electron beam evaporation are used [53,54].…”

Section: Resultsmentioning

confidence: 99%

WITHDRAWN: Combustion stability and flame characteristics of hydrocarbon-air mixtures in millimeter-scale cavity-stabilized burners with proper thermal management

Chen

2022

Preprint

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Flame stabilization is a common problem in these combustion systems, and a flame will propagate through a fuel-air mixture only when certain conditions prevail. However, the precise mechanism underlying the stabilizing effect of the cavity method remains unclear. This study relates to the thermal management of micro-structured cavity-stabilized burners. The design factors affecting combustion stability and flame characteristics of hydrocarbon-air mixtures in millimeter-scale cavity-stabilized burners are determined. The results indicate that the flow velocity, wall thermal conductivity, channel height, and heat loss are critical factors in assuring combustion stability within the cavity-stabilized burner. The axial heat transfer from the post-flame to the pre-flame via wall conduction widens stability limits and can enable the construction of smaller burners. Axial heat transfer also enhances the benefits of operating under high admixture inlet velocity and wall heat transfer coefficient conditions. Heat exchange through the structure can lead to a broadening of the reaction region, but heat loss to the environment decreases the broadening effect and eventually results in flame quenching. The maximum power density tends to increase with increasing the channel height. Fast flows can cause blowout and slow flows can cause extinction. The anisotropic wall thermal conductivity influences the maximum achievable power density. The channel height has an important effect on the stability and performance of the cavity-stabilized burner and should be included when estimating burner performance.

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Section: Resultsmentioning

confidence: 99%

WITHDRAWN: Combustion stability and flame characteristics of hydrocarbon-air mixtures in millimeter-scale cavity-stabilized burners with proper thermal management

Chen

2022

Preprint

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“…This approach offers greater control over productivity and surface finish. By combining AM and SM processes, HM processes offer complementary technologies that can be controlled independently, resulting in more efficient and effective manufacturing processes (Krimpenis and Noeas, 2022). Table 9 compiles a few studies on commonly used HM processes (Table 10).…”

Section: Additive and Subtractive Manufacturingmentioning

confidence: 99%

A state-of-the-art digital factory integrating digital twin for laser additive and subtractive manufacturing processes

Tariq

Joy

et al. 2023

RPJ

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Purpose This study aims to discuss the state-of-the-art digital factory (DF) development combining digital twins (DTs), sensing devices, laser additive manufacturing (LAM) and subtractive manufacturing (SM) processes. The current shortcomings and outlook of the DF also have been highlighted. A DF is a state-of-the-art manufacturing facility that uses innovative technologies, including automation, artificial intelligence (AI), the Internet of Things, additive manufacturing (AM), SM, hybrid manufacturing (HM), sensors for real-time feedback and control, and a DT, to streamline and improve manufacturing operations. Design/methodology/approach This study presents a novel perspective on DF development using laser-based AM, SM, sensors and DTs. Recent developments in laser-based AM, SM, sensors and DTs have been compiled. This study has been developed using systematic reviews and meta-analyses (PRISMA) guidelines, discussing literature on the DTs for laser-based AM, particularly laser powder bed fusion and direct energy deposition, in-situ monitoring and control equipment, SM and HM. The principal goal of this study is to highlight the aspects of DF and its development using existing techniques. Findings A comprehensive literature review finds a substantial lack of complete techniques that incorporate cyber-physical systems, advanced data analytics, AI, standardized interoperability, human–machine cooperation and scalable adaptability. The suggested DF effectively fills this void by integrating cyber-physical system components, including DT, AM, SM and sensors into the manufacturing process. Using sophisticated data analytics and AI algorithms, the DF facilitates real-time data analysis, predictive maintenance, quality control and optimal resource allocation. In addition, the suggested DF ensures interoperability between diverse devices and systems by emphasizing standardized communication protocols and interfaces. The modular and adaptable architecture of the DF enables scalability and adaptation, allowing for rapid reaction to market conditions. Originality/value Based on the need of DF, this review presents a comprehensive approach to DF development using DTs, sensing devices, LAM and SM processes and provides current progress in this domain.

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“…Therefore, to overcome the ever-increasing challenges of natural resource consumption and environmental pollution, countries are required to implement a sustainable development strategy for better product quality and productivity. Hence, various machining techniques have been developed such as dry machining [5], minimum quantity lubrication (MQL) [6], cryogenic machining [7], and hybrid machining [8] to minimize energy consumption and environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Radial direction ultrasonic-vibration and laser assisted turning of Al3003 alloy

Deswal

Kant

2023

Mater. Res. Express

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The utilization of various energy sources to assist the machining process has become prominent to achieve substantial improvement in machining performance. These energy sources have also resulted in an alternative to cutting fluids which is safer for both the universe and human beings. The combined action of laser and ultrasonic vibration energies during the turning process has shown significant achievement in machining process capabilities. Therefore, an attempt has been made to provide ultrasonic vibration in the radial direction and laser to preheat aluminium 3003 alloy simultaneously during the ultrasonic-vibration-laser assisted turning (UVLAT) process. Machining performance has been analyzed in terms of machining forces, machining temperature, chip morphology, surface damage, and surface roughness. A comparative machining performance analysis has been carried out among the conventional turning (CT), laser assisted turning (LAT), ultrasonic vibration assisted turning (UVAT), and UVLAT processes. The outcomes of the current study indicate significant benefits of the UVLAT process on the machining performance of aluminium 3003 alloy. However, surface damage and surface roughness have been affected negatively during the UVLAT process due to the pin-point hammering and particle adhesion on the workpiece part. Hence, the selection of vibration direction is a critical factor during the vibration machining processes.

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Application of Hybrid Manufacturing processes in microfabrication

Cited by 14 publications

References 45 publications

WITHDRAWN: Combustion stability and flame characteristics of hydrocarbon-air mixtures in millimeter-scale cavity-stabilized burners with proper thermal management

WITHDRAWN: Combustion stability and flame characteristics of hydrocarbon-air mixtures in millimeter-scale cavity-stabilized burners with proper thermal management

A state-of-the-art digital factory integrating digital twin for laser additive and subtractive manufacturing processes

Radial direction ultrasonic-vibration and laser assisted turning of Al3003 alloy

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