Effect of Process Parameters on Cutting Forces and Osteonecrosis for Orthopedic Bone Drilling Applications

2020 ◽  
pp. 93-108
Author(s):  
Atul Babbar ◽  
Vivek Jain ◽  
Dheeraj Gupta ◽  
Chander Prakash ◽  
Sunpreet Singh ◽  
...  
Keyword(s):  
Process Parameters ◽  
Cutting Forces ◽  
Bone Drilling

scholarly journals Investigation of the Subsurface Temperature Effects on Nanocutting Processes via Molecular Dynamics Simulations

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1220
Author(s):  
Michail Papanikolaou ◽  
Francisco Rodriguez Hernandez ◽  
Konstantinos Salonitis
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Process Parameters ◽  
Cutting Forces ◽  
Rake Angle ◽  
Von Mises Stress ◽  
Depth Of Cut ◽  
Subsurface Temperature ◽  
Workpiece Material ◽  
Dynamics Simulations

In this investigation, three-dimensional molecular dynamics simulations have been performed in order to investigate the effects of the workpiece subsurface temperature on various nanocutting process parameters including cutting forces, friction coefficient, as well as the distribution of temperature and equivalent Von Mises stress at the subsurface. The simulation domain consists of a tool with a negative rake angle made of diamond and a workpiece made of copper. The grinding speed was considered equal to 100 m/s, while the depth of cut was set to 2 nm. The obtained results suggest that the subsurface temperature significantly affects all of the aforementioned nanocutting process parameters. More specifically, it has been numerically validated that, for high subsurface temperature values, thermal softening becomes dominant and this results in the reduction of the cutting forces. Finally, the dependency of local properties of the workpiece material, such as thermal conductivity and residual stresses on the subsurface temperature has been captured using numerical simulations for the first time to the authors’ best knowledge.

Approach to the Study of Workpiece Damage in Drilling of Carbon Fiber Composites by Using Thermography IR

2012 ◽  
Vol 498 ◽  
pp. 43-48 ◽  
Author(s):  
M. San Juan ◽  
O. Martín ◽  
Francisco Santos Martin ◽  
P. de Tiedra ◽  
A. Sánchez
Keyword(s):  
Carbon Fiber ◽  
Optical Microscopy ◽  
Process Parameters ◽  
Cutting Forces ◽  
Fiber Composites ◽  
Carbon Fiber Composites ◽  
Ir Thermography ◽  
First Results ◽  
Aeronautical Industry ◽  
Study Methodology

The present work shows the first results of the study methodology of the process parameters applied to drilling of composites reinforced with carbon fiber (CFRP) used in the aeronautical industry. The analysis uses both cutting forces and temperatures achieved in the cutting process, although it has focused on the application of IR thermography to the study of the hole. The study of the defects that can be found on the workpiece, associated with these processes (delamination), is approached by using both optical microscopy and SEM.

scholarly journals Effect of Process Parameters on Cutting Forces and Surface Roughness during Peripheral Up Milling of Bamboo Scrimber

BioResources ◽  
2015 ◽  
Vol 10 (4) ◽  
Author(s):  
Jie Wang ◽  
Pingxiang Cao ◽  
Xiaolei Guo ◽  
Xue Hong ◽  
Gang Jia ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Process Parameters ◽  
Cutting Forces ◽  
Bamboo Scrimber

In vivo evaluation of machining forces, torque, and bone quality during skull bone grinding

2020 ◽  
Vol 234 (6) ◽  
pp. 626-638 ◽  
Author(s):  
Atul Babbar ◽  
Vivek Jain ◽  
Dheeraj Gupta
Keyword(s):  
Process Parameters ◽  
Feed Rate ◽  
Rotational Speed ◽  
Cutting Forces ◽  
Tangential Force ◽  
Depth Of Cut ◽  
Regeneration Ability ◽  
Skull Bone ◽  
In Vivo Evaluation

This study investigates neurosurgical bone grinding with varying parameters on skull bone using a miniature grinding burr. Three process parameters, namely, rotational speed, feed rate, and depth of cut, have been investigated at three different levels in the terms of tangential force, thrust force, and torque generated during grinding. The results revealed that as the rotational speed is increased, the cutting forces and torque showed a decreasing trend. Nevertheless, the increase in feed rate and depth of cut leads to the escalation in response characteristics. The best parametric combination for minimum cutting forces and torque is as follows: rotational speed = 55,000 r/min, feed rate = 20 mm/min, and depth of cut = 0.50 mm. Morphological analysis reveals cracks in the bone’s surface at a higher feed rate. Furthermore, delamination and cutting streaks are also visible on the surface of the bone after grinding. Energy-dispersive spectroscopy and elemental mapping of the tool after bone grinding indicate the accumulation of the bone chips in the successive diamond abrasives. The outcomes of the study will be beneficial for the neurosurgeons in understanding the effect of various process parameters on cutting force, toque, microcracks, and bone’s regeneration ability during surgical bone grinding.

scholarly journals Cutting Forces in Milling of Carbon Fibre Reinforced Plastics

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Luca Sorrentino ◽  
Sandro Turchetta
Keyword(s):  
Cutting Force ◽  
Process Parameters ◽  
Cutting Forces ◽  
Waste Product ◽  
Experimental Models ◽  
Advanced Materials ◽  
Production Cycle ◽  
Reinforced Plastics ◽  
Cutting Force Components ◽  
Force Components

The machining of fibre reinforced composites is an important activity for optimal application of these advanced materials into engineering fields. During machining any excessive cutting forces have to be avoided in order to prevent any waste product in the last stages of production cycle. Therefore, the ability to predict the cutting forces is essential to select process parameters necessary for an optimal machining. In this paper the effect of cutting conditions during milling machining on cutting force and surface roughness has been investigated. In particular the cutting force components have been analysed in function of the principal process parameters and of the contact angle. This work proposes experimental models for the determination of cutting force components for CFRP milling.

Thermal Modeling of Temperature Rise for Bone Drilling With Experimental Validation

2015 ◽  
Vol 137 (6) ◽  
Author(s):  
Jianbo Sui ◽  
Naohiko Sugita ◽  
Mamoru Mitsuishi
Keyword(s):  
Heat Transfer ◽  
Finite Difference Method ◽  
Process Parameters ◽  
Temperature Rise ◽  
Thermal Model ◽  
Experimental Validation ◽  
Drill Bit ◽  
Bone Drilling ◽  
Governing Equations ◽  
Comparison With Experiments

This paper provides a methodology to develop a thermal model for predicting the temperature rise during surgical drilling of bone. The thermal model consists of heat generation calculation based on classical machining theory and development of governing equations of heat transfer individually for drill bit and bone. These two governing equations are coupled by shared boundary conditions. Finite-difference method is utilized to approximate the thermal model and effects of drill bit geometry and process parameters on temperature rise are evaluated by comparison with experiments. The simulated results fit well with experiments with respect to different drill bit geometry (<3.02 °C) and process parameters (<4.32 °C).

Experimental analysis of the process parameters affecting bone burring operations

2017 ◽  
Vol 232 (1) ◽  
pp. 33-44 ◽  
Author(s):  
Jonathan R Kusins ◽  
O Remus Tutunea-Fatan ◽  
Louis M Ferreira
Keyword(s):  
Process Parameters ◽  
Cutting Forces ◽  
Depth Of Cut ◽  
Tool Vibration ◽  
Tool Paths ◽  
Bone Removal ◽  
Desirable Outcome ◽  
Process Outcomes ◽  
Experimental Apparatus ◽  
Process Trends

The experimental quantification of the process parameters associated with bone burring represents a desirable outcome both from the perspective of an optimized surgical procedure as well as that of a future implementation into the design of closed-loop controllers used in robot-assisted bone removal operations. Along these lines, the present study presents an experimental investigation of the effects that tool type, rotational speed of the tool, depth of cut, feed rate, cutting track overlap, and tool angle (to a total of 864 total unique combinations) have on bone temperature, tool vibration, and cutting forces associated with superficial bone removal operations. The experimental apparatus developed for this purpose allowed a concurrent measurement of bone temperature, tool vibration, and cutting forces as a function of various process parameter combinations. A fully balanced experimental design involving burring trials performed on a sawbone analog was carried out to establish process trends and subsets leading to local maximums and minimums in temperature and vibration were further investigated. Among the parameters tested, a spherical burr of 6 mm turning at 15,000 r/min and advancing at 2 mm/s with a 50% overlap between adjacent tool paths was found to yield both low temperatures at the bone/tool interface and minimal vibrations. This optimal set of parameters enables a versatile engagement between tool and bone without sacrificing the optimal process outcomes.

Effects of Geometric and Process Parameters on Drill Transverse Vibrations

1990 ◽  
Vol 112 (2) ◽  
pp. 189-194 ◽  
Author(s):  
O. Tekinalp ◽  
A. Galip Ulsoy
Keyword(s):  
Finite Element ◽  
Process Parameters ◽  
Rotational Speed ◽  
Cutting Forces ◽  
Thrust Force ◽  
Helix Angle ◽  
Drill Bit ◽  
Cross Sectional ◽  
Transverse Vibrations ◽  
Simulation Results

Finite element solutions are used to analyze the effects of geometric and process parameters on the drill bit transverse vibrations. The effects of cross sectional geometry, of the flute helix angle, the drill rotational speed, and the thrust force generated during drilling on the drill transverse frequencies are investigated. Simulation results also show the transient vibrations of a drill bit under transverse cutting forces at the drill tip.

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