Swirling Abrasive Fluidized Bed Machining: Effect of Process Parameters on Machining Performance

Francis, N. K.; Viswanadhan, K G; Paulose, Maggie

doi:10.1080/10426914.2014.973580

Cited by 16 publications

(9 citation statements)

References 12 publications

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“…The compressed air entered the abrasive bed through the inclined holes, facilitating fluidization through a vertical component and the swirling motion developed by the horizontal component of the velocity within the annular region of the cylindrical container. In this work, the effect of these swirling abrasives on the MRR and surface roughness was investigated (Francis et al , 2015). In a study done on the speed of the fluid in a swirling abrasive jet nozzle, a swirling jet was produced by placing the whirling element inside the nozzle.…”

Section: Influence Of Swirling Jet On the Machining Processmentioning

confidence: 99%

Challenges in abrasive jet machining of fiber-reinforced polymeric composites – a review

Madhu

Balasubramanian²

2020

WJE

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Purpose The purpose of this study is for solving many issues in production that includes processing of complex-shaped profile, machining of high-strength materials, good surface finish with high-level precision and minimization of waste. Among the various advanced machining processes, abrasive jet machining (AJM) is one of the non-traditional machining techniques used for various applications such as polishing, deburring and hole making. Hence, an overview of the investigations done on carbon fiber-reinforced polymer (CFRP) and glass fiber-reinforced polymer (GRFP) composites becomes important. Design/methodology/approach Discussion on various approaches to AJM, the effect of process parameters on the glass fiber and carbon fiber polymeric composites are presented. Kerf characteristics, surface roughness and various nozzle design were also discussed. Findings It was observed that abrasive jet pressure, stand-off distance, traverse rate, abrasive size, nozzle diameter, angle of attack are the significant process parameters which affect the machining time, material removal rate, top kerf, bottom kerf and kerf angle. When the particle size is maximum, the increased kinetic energy of the particle improves the penetration depth on the CFRP surface. As the abrasive jet pressure is increased, the cutting process is enabled without severe jet deflection which in turn minimizes the waviness pattern, resulting in a decrease of the surface roughness. Research limitations/implications The review is limited to glass fiber and carbon fiber polymeric composites. Practical implications In many applications, the use of composite has gained wide acceptance. Hence, machining of the composite need for the study also has gained wide acceptance. Social implications The usage of composites reduces the usage of very costly materials of high density. The cost of the material also comes down. Originality/value This paper is a comprehensive review of machining composite with abrasive jet. The paper covers in detail about machining of only GFRP and CFRP composites with various nozzle designs, unlike many studies which has focused widely on general AJM of various materials.

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Section: Influence Of Swirling Jet On the Machining Processmentioning

confidence: 99%

Challenges in abrasive jet machining of fiber-reinforced polymeric composites – a review

Madhu

Balasubramanian²

2020

WJE

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“…The compressed air entered the abrasive bed through the inclined holes, facilitating fluidization through a vertical component and the swirling motion was developed by the horizontal component of the velocity within the annular region of the cylindrical container. 29 Swirling jet was enhanced by placing a whirling element inside the nozzle. This swirling nozzle had three segments, namely, the whirling element, the nozzle body, the nozzle exit and the nut.…”

Section: Design and Development Of Internal Threaded Nozzlementioning

confidence: 99%

Evaluation of delamination damage in carbon epoxy composites under swirling abrasives made by modified internal threaded nozzle

Balasubramanian

Madhu

2018

Journal of Composite Materials

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Carbon fibre-reinforced polymer composites are finding increased applications in the field of automotive manufacture and aircraft industries due to their appreciative combination of high strength and low weight. The machining of these composites with economically viable and high part qualities requires enhancement in machining strategies. Delamination and surface roughness are the undesirable geometrical defects inherent in abrasive jet machining of layered polymer composites. This investigation focuses on the mechanism of delamination and surface roughness in abrasive jet machining of carbon fibre-reinforced polymer composite. The paper endeavors at the exploration of the viability of imparting swirling motion to SiC abrasive particles by presenting internal threads in the newly designed nozzle. In this research, a novel threaded nozzle was introduced in the abrasive jet machine for making holes on the carbon fiber-reinforced polymer composites with the objective of reducing the delamination and surface roughness. This is a distinctive attempt of its kind and this has brought down the delamination factor considerably and, as a consequence, surface roughness obtained was minimum. Holes were made on carbon fiber-reinforced polymer composite by abrasive jet machining with a modified nozzle with and without an internal thread. The influence of abrasive jet parameters on the delamination factor (bottom and top) and surface roughness (Ra) was investigated. Maximum pressure and minimum SOD cause decrease in delamination and surface roughness in carbon fiber-reinforced polymer composite composites.

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“…It has been applied successfully for surface finishing, deburring, polishing [38][39][40], and coating [41,42]. Several studies propose FB technology for post-process finishing treatments [43][44][45][46][47]. In the present paper, it was used for metal degreasing of pressure vessels related to airbags for the automotive industry.…”

Section: Introductionmentioning

confidence: 98%

Technical, environmental, and economic feasibility investigation of an innovative dry washing process for metal degreasing

Rubino

Marconi

Baiocco

et al. 2022

Int J Adv Manuf Technol

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Industrial washing is essential in manufacturing and many other technological fields. Nowadays, steam washing is the most common technique. However, it involves chemical solvents which are potentially noxious for the environment and difficult to be disposed of. Therefore, there is a growing demand for alternative washing techniques that would ensure low operating costs, extensive productivity, high efficiency, environmental sustainability, good compatibility with different materials, and safe operating conditions. A fluidized bed (FB) represents a promising alternative to satisfy market requirements. In this study, a prototype of FB machine for the degreasing of pressure vessels was designed, built, and compared to the current solvent washing machine. The scope of the work is to assess the technical, environmental, and economic feasibility of a FB device for industrial washing. The analysis of variance (ANOVA) was carried out to detect the process parameters influencing the cleaning. The optimal process parameters were identified based on the experimental results. Life cycle assessment (LCA) and cost analysis were performed to evaluate environmental impacts, and operating costs. The results confirmed the validity of FB technology as an alternative to current washing techniques thanks to its higher cleanness, minor environmental impact and costs, and comparable productivity.

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Swirling Abrasive Fluidized Bed Machining: Effect of Process Parameters on Machining Performance

Cited by 16 publications

References 12 publications

Challenges in abrasive jet machining of fiber-reinforced polymeric composites – a review

Challenges in abrasive jet machining of fiber-reinforced polymeric composites – a review

Evaluation of delamination damage in carbon epoxy composites under swirling abrasives made by modified internal threaded nozzle

Technical, environmental, and economic feasibility investigation of an innovative dry washing process for metal degreasing

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