EXPERIMENTAL INVESTIGATIONS ON SUBSURFACE DAMAGE IN ROTARY ULTRASONIC MACHINING OF GLASS<i>BK7</i>

Lv, Dongxi; Tang, Yongjian; Wang, Hongxiang; Huang, Yao-Hui

doi:10.1080/10910344.2013.806114

Cited by 33 publications

(17 citation statements)

References 13 publications

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“…Material strain rate effects based on the indentation mechanics theory were also studied in Lv et al's study [7]. Lv et al also studied the surface formation mechanisms and conducted experimental investigations on subsurface damage, including the relationship between subsurface damage and surface roughness, subsurface damage depth and its distribution in RUM and conventional grinding of K9 glass [8,9,14,15]. They did another study to attain influences of highfrequency vibration on tool wear in RUM of K9 glass [16].…”

Section: Rotary Ultrasonic Machining and Its Application To K9 Glass mentioning

confidence: 99%

Intermittent and Continuous Rotary Ultrasonic Machining of K9 Glass: An Experimental Investigation

Fernando

Zhang

Pei

et al. 2017

JMMP

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Abstract:Rotary ultrasonic machining (RUM) is a nontraditional and cost-effective machining method for hard and brittle materials, such as ceramics, optical glass, composite materials, and so on. RUM is a hybrid process that combines the material removal mechanisms of diamond abrasive grinding and ultrasonic machining. In RUM, a rotating cutting tool with metal-bonded diamond abrasive particles is ultrasonically vibrated in the axial direction while the tool spindle is fed toward the workpiece at a constant feedrate to remove material. It has been reported that continuous rotary ultrasonic machining has been successfully used to drill holes in K9 glass. Intermittent rotary ultrasonic machining is a newly introduced ultrasonic machining process, which uses a slotted cutting tool instead of a common metal bonded diamond cutting tool as used in continuous rotary ultrasonic machining. There has been no reported study to compare the effects of intermittent RUM and continuous RUM when machining K9 glass. This paper, for the first time, presents an experimental investigation to compare intermittent RUM and continuous RUM when machining K9 glass from the perspectives of cutting force, surface roughness, and chipping size.

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Section: Rotary Ultrasonic Machining and Its Application To K9 Glass mentioning

confidence: 99%

Intermittent and Continuous Rotary Ultrasonic Machining of K9 Glass: An Experimental Investigation

Fernando

Zhang

Pei

et al. 2017

JMMP

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“…Furthermore, the reference Churi et al (2006) and Zou et al (2013) studied the effects of machining variables of RUM for titanium and its alloy to analyse its effects on MRR, cutting force, roughness inside the hole surface and cutting temperatures. Lv et al (2013) worked on RUM and concluded that subsurface damage induced in RUM was discriminated as grinding, chipping and cracking on the BK7 glass. investigated the hole quality, roughness, TWR, MRR, thrust force, at distinct levels of parameters such as RPM, ultrasonic power and feed rate of RUM.…”

Section: Machining Of Nickel-based Super Alloysmentioning

confidence: 99%

Investigation of machining rate and roughness for rotary ultrasonic drilling of Inconel 718 alloy with slotted diamond metal bonded tool

Popli

Gupta

2018

IJMR

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Super alloy has extensive engineering applications in nuclear industries owing to its outstanding performance characteristics at elevated temperature. More than 30% of consumption in nuclear industries is super alloy. A number of holes are required to be drilled into super alloys for their final stage assembly. During conventional machining process, excessive heat is generated, which is the cause of heat treated zone that further affect the life and performance of the product. To overcome this difficulty, a rotary ultrasonic machining method came into existence to machine super alloys by hybrid cutting action (vibratory and rotary) of diamond impregnated core drill. This study focuses on the machining characteristics of super alloy by RUM process. The empirical modelling of process parameters of RUM is carried out for super alloy (Inconel 718) using an experimental design approach called response surface methodology. Material removal efficiency of RUM and surface topography of the machined material are studied. The results reported that for quality and productivity aspect, the feed rate in RUM is found a most critical factor.Reference to this paper should be made as follows: Popli, D. and Gupta, M. (2018) 'Investigation of machining rate and roughness for rotary ultrasonic drilling of Inconel 718 alloy with slotted diamond metal bonded tool', Int. NIT is an institution of national importance. She has more than 25 years of experience in teaching and research. Her current areas of research include machine vision, image processing, optimisation, and modelling.

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“…Also, etching with Yang solution was done to make the subsurface cracks discernable. Scanning electron microscope (SEM) and microscope were used to observe the surface and subsurface damage (Lv et al, 2012(Lv et al, , 2014. For dental ceramics, it was presented that the surface quality is better with ultrasonic vibration than without, the subsurface cracks and the depth of crack ranges are much less with ultrasonic vibration than without.…”

Section: Experimental Investigations On Surface and Subsurface Damagementioning

confidence: 99%

“…However, subsurface cracks generation and propagation mechanism have not been well explained (Ahmed et al, 2012). Source: Lv et al (2014) For UVAG of glass K9, three types of subsurface damage were identified as pulverisation, chipping, and cracking by Lv et al The pulverisation layer was characterised by finer debris as shown in Figure 10; chippings were formed while lateral cracks extending to the workpiece surface. Cracking layer was beneath the chipping layer, the cracks obliquely extended further into the interior material, due to the complexity of the abrasive-material interactions.…”

Section: Experimental Investigations On Surface and Subsurface Damagementioning

confidence: 99%

Experimental investigations on core drilling by ultrasonic-vibration-assisted grinding for hard-to-machine materials - a review

Qin

Lei

Pei

2016

IJMR

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Ultrasonic-vibration-assisted grinding (UVAG), a hybrid machining process combining material removal mechanisms of diamond grinding and ultrasonic machining, has been used to machine various hard-to-machine materials. Large amount of research work on UVAG has been carried out since it is invented. However there are few review papers to cover the current literature on UVAG. The emphasis of this literature review is the experimental investigations of the drilling process with ultrasonic vibration using a core drill with metal-bonded diamond abrasives. Experimental results are summarised and compared. The inconsistent results and their reasons are discussed. Furthermore, directions of future research on UVAG are also presented.

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EXPERIMENTAL INVESTIGATIONS ON SUBSURFACE DAMAGE IN ROTARY ULTRASONIC MACHINING OF GLASSBK7

Cited by 33 publications

References 13 publications

Intermittent and Continuous Rotary Ultrasonic Machining of K9 Glass: An Experimental Investigation

Intermittent and Continuous Rotary Ultrasonic Machining of K9 Glass: An Experimental Investigation

Investigation of machining rate and roughness for rotary ultrasonic drilling of Inconel 718 alloy with slotted diamond metal bonded tool

Experimental investigations on core drilling by ultrasonic-vibration-assisted grinding for hard-to-machine materials - a review

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