Abrasive machining processes

Azarhoushang, Bahman

doi:10.1016/b978-0-12-823777-9.00014-8

Cited by 8 publications

(2 citation statements)

References 21 publications

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“…In AFM, two vertically opposed cylinders are utilized to create a reciprocating flow of the abrasive medium between the tooling and the workpiece. Several process parameters significantly impact the performance of AFM, including the number of cycles, extrusion pressure, grit concentration, grit size, and fixture design [20][21][22]. AFM finds wide-ranging applications in industries such as aerospace, semiconductor, and automotive.…”

Section: Abrasive Flow Machining (Afm)mentioning

confidence: 99%

Non-Traditional Machining Techniques in Manufacturing Industries – An Overview

Ikumapayi,

Omietimi,

Onu

et al. 2023

E3S Web Conf.

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This comprehensive study provides an in-depth analysis of non-traditional machining techniques in the manufacturing industry. Focusing on mechanical, electrochemical, chemical, and thermal machining processes, the research explores recent advancements and their implications. The study adopts the action research method to gain a deeper understanding of the challenges associated with these techniques. Through a thorough examination of the machining processes, this work delves into various concepts, including the operations involved in each process and their corresponding outcomes. The analysis sheds light on the significance of non-traditional machining in the manufacturing industry, highlighting its potential for producing complex components and meeting design requirements that traditional machining methods may struggle to achieve. By exploring recent developments in non-traditional machining, this study aims to provide an overview of the advancements made in this field. It emphasizes the importance of understanding these techniques to unlock their full potential and enhance manufacturing capabilities. The findings of this research contribute to the existing knowledge base and serve as a valuable resource for professionals and researchers in the field of non-traditional machining.

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Section: Abrasive Flow Machining (Afm)mentioning

confidence: 99%

Non-Traditional Machining Techniques in Manufacturing Industries – An Overview

Ikumapayi,

Omietimi,

Onu

et al. 2023

E3S Web Conf.

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“…[21]. Surface structures on the micron scale have been widely produced and demonstrated [21][22][23][24][25][26][27]. The production of such structures is mainly achieved through photolithography.…”

Section: Introductionmentioning

confidence: 99%

Optical fabrication of micro-patterned photopolymer surfaces for application in sensing

Kearney,

Naydenova

2024

Photosensitive Materials and Their Applications III

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In the study of surface relief based diffractive sensors, surface morphology is a key parameter. There are many approaches to patterning of surfaces on the micro and nanoscale, such as lithography, self-assembly, ultra-thin alumina mask nanosurface patterning, and Scanning probe techniques. While these techniques allow for fabrication of structures with very high resolution, the development of an alternative technique that can deliver complex, easily customisable surface structures at a low cost is well justified. Two optical techniques for patterning of photopolymers of different chemical compositions will be presented and compared. They allow the fabrication of surface structures on the micron scale directly into a photopolymer layer by single step recording of the whole pattern. The first approach utilizes holographic recording with three laser beams with different states of polarization and adjusted intensities. A semi-automated optical system utilising this approach currently allows for the creation of surface relief cross-gratings (SRCG) of unit cell size ranging from 8 x 8 μm 2 to as small as 2 x 2 μm 2 , but smaller features are theoretically possible. Control over surface morphology and surface roughness by optical patterning is experimentally confirmed. The second approach involves the use of a digital micro-mirror array spatial light modulator. This approach allows for the creation of surface relief with features as small as 3 μm 2 , with higher achievable image complexity, due to the control over individual micro-mirrors. Surfaces fabricated in photopolymer materials utilising both approaches were characterised via atomic force microscopy, phase contrast microscopy, fast Fourier transform analysis of collected images, and diffraction efficiency measurements. Both approaches are compared in view of their application in diffractive optical sensors.

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Investigation of material removal mechanisms of laser-structured Si3N4 via single diamond grit scratching

Paknejad

Azarhoushang

Zahedi

et al. 2023

Int J Adv Manuf Technol

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Grinding hard-brittle materials like silicon nitride is faced with some challenges, including sub-surface damage, high tool wear, and low grinding efficiency. Ultrashort-pulse laser structuring of hard materials prior to the grinding process significantly reduces the cutting forces and temperature and increases the achievable material removal rate of the grinding process. These effects are partially due to controllable induced damages into the subsurface of the structured workpieces. However, the impacts of this surface structuring technique on the material removal mechanism of advanced ceramics, such as Si3N4, are not yet thoroughly investigated. The dominant material removal mechanism in grinding hard and brittle materials, such as silicon nitride (Si3N4), defines the surface integrity of the workpiece. For the first time, in-depth single diamond grit scratching experiments are carried out to investigate the changes in the dominant material removal mechanisms at various chip thicknesses by laser structuring of Si3N4. Two different structuring ratios (25% and 50%) were generated on sample surfaces by a femtosecond laser. The effects of laser structuring on material removal mechanism, pile-up area, area and width of the groove, grit path, normal and tangential forces, and specific cutting energy have been investigated. The results indicate that laser structuring considerably affects the reduction of depth ratio, normal (up to 89%) and tangential (up to 82%) forces, and specific cutting energy. The specific cutting energy of laser-structured Si3N4 workpieces converged to about 5 J/mm3, much lower than that of unstructured workpieces.

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Abrasive machining processes

Cited by 8 publications

References 21 publications

Non-Traditional Machining Techniques in Manufacturing Industries – An Overview

Non-Traditional Machining Techniques in Manufacturing Industries – An Overview

Optical fabrication of micro-patterned photopolymer surfaces for application in sensing

Investigation of material removal mechanisms of laser-structured Si3N4 via single diamond grit scratching

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