Role of Forming In Micro‐ And Nano‐Scale Material Removal Mechanisms During Surface Machining of Ductile Materials

dc.contributor.author Chandra, Abhijit
dc.contributor.author Bastawros, Ashraf
dc.contributor.author Bastawros, Ashraf
dc.contributor.department Aerospace Engineering
dc.contributor.department Mechanical Engineering
dc.date 2018-02-17T14:24:35.000
dc.date.accessioned 2020-06-29T22:44:53Z
dc.date.available 2020-06-29T22:44:53Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2004
dc.date.embargo 2016-03-09
dc.date.issued 2004-06-01
dc.description.abstract <p>The material detachment mechanisms of ductile metal surfaces are studied experimentally during dry grinding operation in a simulated experiment with near single grit contact with the surface. The spectra of the cutting and thrust forces are recorded and analyzed. It is found that the thrust force changes its direction from a compressive to a tensile mode. The ratio between the thrust and cutting force is consistently found to be greater than 1. In the grinding process, the chip is found to be much shorter and thicker than those predicted by traditional continuum cutting theories. From the analysis of chip dimensions and cutting forces, we speculate that the cutting process during a grinding operation comprises of three phases as follows: (i) lifting up of the surface ahead of the abrasive particle, (ii) segmentation through shear instability, and finally (iii) chip tearing from the surface. Accordingly, the heating cycle is much longer with a lower mean temperature, compared to those of macro machining. In addition, the proposed deformation field leads to loss of constraints ahead of the cutting grits, and possibly reducing the thrust to cutting force ratio. This suggests that forming took place prior to material detachment in grinding.</p>
dc.description.comments <p>The following article appeared in <em>AIP Conference Proceedings</em> 712 (2004): 123, and may be found at doi: <a href="http://dx.doi.org/10.1063/1.1766511" target="_blank">10.1063/1.1766511</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aere_conf/22/
dc.identifier.articleid 1022
dc.identifier.contextkey 8295804
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aere_conf/22
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1899
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aere_conf/22/2004_BastawrosAF_RoleFormingMicro.pdf|||Fri Jan 14 22:40:48 UTC 2022
dc.source.uri 10.1063/1.1766511
dc.subject.disciplines Aerospace Engineering
dc.subject.disciplines Mechanical Engineering
dc.title Role of Forming In Micro‐ And Nano‐Scale Material Removal Mechanisms During Surface Machining of Ductile Materials
dc.type article
dc.type.genre conference
dspace.entity.type Publication
relation.isAuthorOfPublication 5dc5d008-4c85-41c9-b47c-7c55b44ca802
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relation.isOrgUnitOfPublication 6d38ab0f-8cc2-4ad3-90b1-67a60c5a6f59
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