AI Article Synopsis
- The study examined how spindle speed and feed rate influence cutting forces and temperatures during drilling of SawBones materials and cadaveric bones.
- The feed rate significantly impacted cutting forces, while both spindle speed and feed rate affected cutting temperatures, revealing friction as the main heat source.
- Drilling animal cortical bone resulted in higher forces than drilling test materials, and while drilling direction was considered, it had little effect on cutting forces due to the angled nature of osteons being cut.
Article Abstract
The research presented in this paper investigated the effects of spindle speed and feed rate on the resultant cutting forces (thrust force and torque) and temperatures while drilling SawBones biomechanical test materials and cadaveric cortical bone (bovine and porcine femur) specimens. It also investigated cortical bone anisotropy on the cutting forces, when drilling in axial and radial directions. The cutting forces are only affected by the feed rate, whereas the cutting temperature in contrast is affected by both spindle speed and feed rate. The temperature distribution indicates friction as the primary heat source, which is caused by the rubbing of the tool margins and the already cut chips over the borehole wall. Cutting forces were considerably higher when drilling animal cortical bone, in comparison to cortical test material. Drilling direction, and therewith anisotropy, appears to have a negligible effect on the cutting forces. The results suggest that this can be attributed to the osteons being cut at an angle rather than in purely axial or radial direction, as a result of a twist drill's point angle.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.medengphy.2017.10.009 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effect of a tailored exercise programme on kinematics and kinetic knee injury risk during different side-cutting.
Sports Biomech
January 2025
Department of Physical Education and Sport, University of Seville, Seville, Spain.
Despite the high incidence of knee injuries reported in non-professional sports, the implementation of specific training programmes aimed at mitigating the kinematic and kinetic factors associated with these injuries remains limited. To determine the effects of a tailored exercise programme on kinematic and kinetic variables during side-cutting activities. Fifty-seven physically active participants were randomised into control group (CG; n: 28) that received no intervention, and an experimental group (EG; n: 29), that performed an individualised exercise programme that included a combination of strength, neuromuscular, proprioceptive, eccentric training and whole-body vibration (WBV) exercises.
View Article and Find Full Text PDFOn the formation and stability mechanisms of diverse lipid-based nanostructures for drug delivery.
Adv Colloid Interface Sci
January 2025
Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, Australia.
In the evolving landscape of nanotechnology and pharmaceuticals, lipid nanostructures have emerged as pivotal areas of research due to their unique ability to mimic biological membranes and encapsulate active molecules. These nanostructures offer promising avenues for drug delivery, vaccine development, and diagnostic applications. This comprehensive review explores the complex mechanisms underlying the formation and stability of various lipid nanostructures, including lipid liquid crystalline nanoparticles and solid lipid nanoparticles.
View Article and Find Full Text PDFCutting-edge: bionanomaterial solutions in the battle against Severe Acute Respiratory Syndrome Coronavirus 2.
Braz J Biol
January 2025
Near East University, Operational Research Center in Healthcare, Mersin, Turkey.
Amidst the ongoing COVID-19 pandemic, the imperative of our time resides in crafting stratagems of utmost precision to confront the relentless SARS-CoV-2 and quell its inexorable proliferation. A paradigm-shifting weapon in this battle lies in the realm of nanoparticles, where the amalgamation of cutting-edge nanochemistry begets a cornucopia of inventive techniques and methodologies designed to thwart the advances of this pernicious pathogen. Nanochemistry, an artful fusion of chemistry and nanoscience, provides a fertile landscape for researchers to craft innovative shields against infection.
View Article and Find Full Text PDFInvestigation of Chip Morphology in Elliptical Vibration Micro-Turning of Silk Fibroin.
Micromachines (Basel)
January 2025
Centre for Precision Manufacturing, DMEM, University of Strathclyde, Glasgow G1 1XJ, UK.
Silk fibroin, known for its biocompatibility and biodegradability, holds significant promise for biomedical applications, particularly in drug delivery systems. The precise fabrication of silk fibroin particles, specifically those ranging from tens of nanometres to hundreds of microns, is critical for these uses. This study introduces elliptical vibration micro-turning as a method for producing silk fibroin particles in the form of cutting chips to serve as carriers for drug delivery systems.
View Article and Find Full Text PDFDesign of Dielectric Elastomer Actuator and Its Application in Flexible Gripper.
Micromachines (Basel)
January 2025
Zhejiang Sunny Optical Company, Yuyao 315400, China.
Dielectric elastomer actuators (DEAs) are difficult to apply to flexible grippers due to their small deformation range and low output force. Hence, a DEA with a large bending deformation range and output force was designed, and a corresponding flexible gripper was developed to realize the function of grasping objects of different shapes. The relationship between the pre-stretch ratio and DEA deformation degree was tested by experiments.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!