Ultrasonic Assisted Creep Feed Grinding of Inconel 718

Bhaduri, Debajyoti; Soo, Sein Leung; Novovic, Donka; Aspinwall, D.K.; Harden, P.; Waterhouse, C.; Bohr, S.; Mathieson, Andrew; Lucas, Margaret

doi:10.1016/j.procir.2013.03.044

Cited by 52 publications

(18 citation statements)

References 17 publications

(21 reference statements)

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“…Wet conditions mean that the substrate is fully submerged under water of known water-film thickness above the substrate surface. To keep the underwater setup as simple as possible, the water containing chamber of polymethyl methacrylate (PMMA) was [78] Decrease working time [78] Reductions in vertical and horizontal forces [79] Less stresses in the tools [39] large vibration amplitudes lowers drill life [78] Greater wheel wear (30-60 %) Increase roughness (up to 24 %) [79] Overlapping grit marks [79] [39, [77][78][79][80] Laser / Plasma assisted (Cutting, drilling 30 % reduction in cutting force [37] Compressive residual stresses [38] [ 31,33,37,38,[40][41][42][81][82][83][84] merely placed and clamped on the worktable beneath the incoming laser beam. The associated design in schematic form is shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

A comparison of laser beam machining of micro-channels under dry and wet mediums

Darwish

Ahmed

Alahmari

et al. 2015

Int J Adv Manuf Technol

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Micro-channels have been fabricated in nickelbased superalloy (Inconel 718) through laser beam machining (LBM). Two machining mediums are employed: dry and wet medium. Under the dry medium, laser beam passes through air prior to strike with target surface while under wet medium, the laser beam first travels through a layer of distilled water and reaches the substrate after. For both the machining environments, effects of laser power, pulse repetition rate, and laser scan speed on machined channels' width, depth, and taperness are investigated. A comparison of parametric effects on machined channels' profiles has been carried out for the said machining conditions. The results reveal that LBM under distilled water is more productive than LBM under air environment. In one step, wet machining conditions allow to generate a set of two microchannels, and dry conditions generate one micro-channel. Further, to achieve the optimum dimensions of micro-channels, the appropriate level of each of the investigated laser parameter is proposed.

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Section: Methodsmentioning

confidence: 99%

A comparison of laser beam machining of micro-channels under dry and wet mediums

Darwish

Ahmed

Alahmari

et al. 2015

Int J Adv Manuf Technol

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“…The width, depth, and length of each microgroove were about 150, 300, and 50 mm, respectively, and 16 grooves were produced on each plate. Thick white layers (6-8 µm) with micro-cracks [228] Micro-cracks [257,258] Poor surface integrity [229] Post processing requirements [230] Less fatigue life [259] ECM High material removal rates Good surface integrity [261] Less heat affected zone [262] High tooling cost Suitable for large batch sizes [226] Salt film on machined surface [261] Selective corrosion due to the formation of a porous salt [271] Decrease working time [271] Reductions in vertical and horizontal forces [272] Less stresses in the tools [273] Overlapping grit marks [272] Laser/plasma assisted (cutting, drilling and surface modification) 30 % reduction in cutting force [114] Improved surface roughness 40 % [115,275] Increase in tool life [275,276] No micro-crack during laser surface melting [277] Increase in hardness by laser surface treatment [278] Compressive residual stresses [115] Thicker compressive zone (40-70 µm)…”

Section: Fabrication Techniquesmentioning

confidence: 99%

Laser Beam Machining, Laser Beam Hybrid Machining, and Micro-channels Applications and Fabrication Techniques

Darwish

Ahmed

Al‐Ahmari

2016

Machining, Joining and Modifications of Advanced Materials

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Laser beam machining (LBM) has proven its applications and advantages over almost all the range of engineering materials. It offers its competences from macro machining to micro and nano-machining of simple-to-complex shapes. The flipside of LBM is the existence of universal problems associated with its thermal ablation mechanism. In order to alleviate or reduce the inherent problems of LBM, a massive research has been done during the past decade and in turn build a relatively new route of laser-hybrid processes. The hybrid approaches in laser ablation have demonstrated much improved results in terms of material removal rate, surface integrity, geometrical tolerances, thermal damage, metallurgical alterations and many more. This chapter reviews the research work carried out so far in the area of LBM and its hybrid processes for different materials and shapes.

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“…In addition, it was also reported that in general grinding process, the smaller abrasive grain has faster wear rate, leading to the increase in the cutting forces. 43,47,48 Effects of abrasive concentration. The effects of abrasive concentration on the cutting forces in both the feeding direction (F x ) and the axial direction (F z ) are shown in Figure 9.…”

Section: Effects On Cutting Forcementioning

confidence: 99%

“…Comparing with the two-slot tool, the four-slot tool had less abrasive grains participating in machining, leading to higher tool wear and onegrain MRR 1 (the total MRR was the same, 3.81 mm 3 /s) and then resulting in higher F 1x and F 1z . 3,[43][44][45][46][47][48] Using equations (3) and (4), the increase rate of F 1x and F 1z might play a more important role than the decreasing rate of active abrasive-grain numbers, resulting in the cutting forces using the four-slot tool being higher than using the two-slot tool. 27,30,37 Effects of tool geometry.…”

Section: Effects On Cutting Forcementioning

confidence: 99%

Surface grinding of carbon fiber–reinforced plastic composites using rotary ultrasonic machining: Effects of tool variables

Wang

Ning

et al. 2016

Advances in Mechanical Engineering

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Carbon fiber-reinforced plastic composites have many superior properties, including low density, high strength-toweight ratio, and good durability, which make them attractive in many industries. However, due to anisotropic properties, high stiffness, and high abrasiveness of carbon fibers in carbon fiber-reinforced plastic, high cutting force, high tool wear, and high surface roughness are always caused in conventional machining processes. This article reports an investigation using rotary ultrasonic machining in surface grinding of carbon fiber-reinforced plastic composites in order to develop an effective and high-quality surface grinding process. In rotary ultrasonic machining surface grinding of carbon fiber-reinforced plastic composites, tool selection is of great importance since tool variables will significantly affect output variables. In this work, the effects of tool variables, including abrasive size, abrasive concentration, number of slots, and tool end geometry, on machining performances, including the cutting force, torque, and surface roughness, are experimentally studied. The results show that lower cutting forces and torque are generated by the tool with higher abrasive size, lower abrasive concentration, and two slots. Lower surface roughness is generated by the tool with smaller abrasive size, smaller abrasive concentration, two slots, and convex end geometry. This investigation will provide guides for tool selections during rotary ultrasonic machining surface grinding of carbon fiber-reinforced plastic composites.

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Ultrasonic Assisted Creep Feed Grinding of Inconel 718

Cited by 52 publications

References 17 publications

A comparison of laser beam machining of micro-channels under dry and wet mediums

A comparison of laser beam machining of micro-channels under dry and wet mediums

Laser Beam Machining, Laser Beam Hybrid Machining, and Micro-channels Applications and Fabrication Techniques

Surface grinding of carbon fiber–reinforced plastic composites using rotary ultrasonic machining: Effects of tool variables

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