A Feasibility Study of Vibration-Assisted Nano-Impact Machining by Loose Abrasives Using Atomic Force Microscope

James, Sagil; Sundaram, Murali M.

doi:10.1115/1.4007714

Cited by 16 publications

(10 citation statements)

References 72 publications

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“…Fig.18. shows the material removal by abrasives where less unit material removal is achieved with high precision surface finish [30], further the tool wear is significantly reduced [31,32]. …”

Section: Vibration Assisted Abrasive Machining (Vaam)mentioning

confidence: 96%

Vibration Assisted Conventional and Advanced Machining: A Review

Maroju

Subbu

Krishna

et al. 2014

Procedia Engineering

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Increasing demand for precision miniaturised components made of hard and brittle materials can no longer meet the requirements by conventional machining and advanced machining processes. To facilitate high precision machining, vibration is introduced in any of workpiece, tool and working medium, which is called Vibration Assisted Machining (VAM). In this review, the advancements of VAM in conventional machining as well as in advanced machining are presented. In detail, general overview, classifications, basic kinematics of 1-D and 2-D VAM, chip formation and instrumental implementation issues of VAM, are discussed. In addition to this the reasons for improvements in machining process and promising areas to be explored in VAM are summarized.

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Section: Vibration Assisted Abrasive Machining (Vaam)mentioning

confidence: 96%

Vibration Assisted Conventional and Advanced Machining: A Review

Maroju

Subbu

Krishna

et al. 2014

Procedia Engineering

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“…VANILA, a tip-based nanomachining process that uses a single-point AFM probe with loose abrasives and vibration assis tance, has the potential to perform target specific impact-based machining of nanoscale features on hard and brittle materials, such as glass and ceramics [5], This process uses an AFM plat form in which a slurry of nanodiamond abrasive particles is intro duced between the tool and the workpiece. The machining is conducted in tapping mode where the tool vibrates at resonance within the slurry of abrasive nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Material Removal Rate in Vibration Assisted Nano Impact-Machining by Loose Abrasives

James

Sundaram

2015

Journal of Manufacturing Science and Engineering

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Vibration assisted nano impact-machining by loose abrasives (VANILA) is a novel nano machining process that combines the principles o f vibration-assisted abrasive machining, and dp-based nanomachining, to perform target specific nano abrasive machining o f hard and brittle materials. An atomic force microscope (AFM) is used as a platform in this pro cess wherein, nano abrasives, injected in slurry between the workpiece and the vibrating AFM probe, impact the workpiece and cause nanoscale material removal. The objective o f this study is to develop a mathematical model to determine the material removal rate (MRR) in the VANILA process. The experimental machining results reveal that the material removal happens primarily in ductile mode due to repeated deformation which happens at near normal angles o f impact. A predictive model fo r MRR during the VANILA process is analytically developed based on elastoplastic impact theory fo r normal angles o f impact. The model is validated through a series o f experiments performed on silicon and borosilicate glass subs mates and the results confirm that the model is capable o f predicting the machining results within 10% deviation.

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“…Earlier studies using scanning electron microscopy (SEM) imaging have shown that tool wear in the VANILA process is comparatively lower than that in other nanomachining processes such as nanoscratching and nanoindentation involving direct tool contact with the workpiece (Figure 3) [2]. The accuracy and precision of any tip-based nanomachining process is limited by the tip's sharpness, material, and geometry [3].…”

Section: Introductionmentioning

confidence: 99%

“…Patterns of nanocavities were successfully machined to demonstrate the controllability and repeatability of the process as shown in Figure 2 [2].…”

Section: Introductionmentioning

confidence: 99%

“…Vibration assisted nano impact-machining by loose abrasives (VANILA) process, a noncontact vibration tip-assisted nanomachining process that uses loose abrasives, has been investigated and can be used to perform target specific impact-based machining of nanoscale features on hard and brittle materials, such as glass and ceramics materials [1,2]. This process uses an AFM platform in which a slurry of nanodiamond abrasive particles is introduced between the tool and the workpiece.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of Tool Wear in Vibration Assisted Nano Impact-Machining by Loose Abrasives

James

Sundaram

2014

International Journal of Manufacturing Engineering

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Vibration assisted nano impact-machining by loose abrasives (VANILA) is a novel nanomachining process that combines the principles of vibration assisted abrasive machining and tip-based nanomachining, to perform target specific nanoabrasive machining of hard and brittle materials. An atomic force microscope (AFM) is used as a platform in this process wherein nanoabrasives, injected in slurry between the workpiece and the vibrating AFM probe which is the tool, impact the workpiece and cause nanoscale material removal. The VANILA process are conducted such that the tool tip does not directly contact the workpiece. The level of precision and quality of the machined features in a nanomachining process is contingent on the tool wear which is inevitable. Initial experimental studies have demonstrated reduced tool wear in the VANILA process as compared to indentation process in which the tool directly contacts the workpiece surface. In this study, the tool wear rate during the VANILA process is analytically modeled considering impacts of abrasive grains on the tool tip surface. Experiments are conducted using several tools in order to validate the predictions of the theoretical model. It is seen that the model is capable of accurately predicting the tool wear rate within 10% deviation.

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A Feasibility Study of Vibration-Assisted Nano-Impact Machining by Loose Abrasives Using Atomic Force Microscope

Cited by 16 publications

References 72 publications

Vibration Assisted Conventional and Advanced Machining: A Review

Vibration Assisted Conventional and Advanced Machining: A Review

Modeling of Material Removal Rate in Vibration Assisted Nano Impact-Machining by Loose Abrasives

Modeling of Tool Wear in Vibration Assisted Nano Impact-Machining by Loose Abrasives

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