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Ultrasonic Vibration Assisted Grinding of Bio-ceramic Materials : = Modeling, Simulation, and Experimental Investigations on Edge Chipping.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Ultrasonic Vibration Assisted Grinding of Bio-ceramic Materials :/
Reminder of title:	Modeling, Simulation, and Experimental Investigations on Edge Chipping.
Author:	Tesfay, Hayelom D.
Description:	1 online resource (313 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 78-04(E), Section: B.
Contained By:	Dissertation Abstracts International78-04B(E).
Subject:	Biomedical engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9781369222418

Ultrasonic Vibration Assisted Grinding of Bio-ceramic Materials : = Modeling, Simulation, and Experimental Investigations on Edge Chipping.
Tesfay, Hayelom D.

Ultrasonic Vibration Assisted Grinding of Bio-ceramic Materials :Modeling, Simulation, and Experimental Investigations on Edge Chipping. - 1 online resource (313 pages)

Source: Dissertation Abstracts International, Volume: 78-04(E), Section: B.

Thesis (Ph.D.)

Includes bibliographical references

Bio-ceramics are those engineered materials that find their applications in the field of biomedical engineering or medicine. They have been widely used in dental restorations, repairing bones, joint replacements, pacemakers, kidney dialysis machines, and respirators. etc. due to their physico-chemical properties, such as excellent corrosion resistance, good biocompatibility, high strength and high wear resistance.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369222418Subjects--Topical Terms:

588770
Biomedical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Ultrasonic Vibration Assisted Grinding of Bio-ceramic Materials : = Modeling, Simulation, and Experimental Investigations on Edge Chipping.
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245 1 0 $a Ultrasonic Vibration Assisted Grinding of Bio-ceramic Materials : $b Modeling, Simulation, and Experimental Investigations on Edge Chipping.
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300 $a 1 online resource (313 pages)
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500 $a Source: Dissertation Abstracts International, Volume: 78-04(E), Section: B.
500 $a Adviser: Zhichao Li.
502 $a Thesis (Ph.D.) $c North Carolina Agricultural and Technical State University $d 2016.
504 $a Includes bibliographical references
520 $a Bio-ceramics are those engineered materials that find their applications in the field of biomedical engineering or medicine. They have been widely used in dental restorations, repairing bones, joint replacements, pacemakers, kidney dialysis machines, and respirators. etc. due to their physico-chemical properties, such as excellent corrosion resistance, good biocompatibility, high strength and high wear resistance.
520 $a Because of their inherent brittleness and hardness nature they are difficult to machine to exact sizes and dimensions. Abrasive machining processes such as grinding is one of the most widely used manufacturing processes for bioceramics.
520 $a However, the principal technical challenge resulted from these machining is edge chipping. Edge chipping is a common edge failure commonly observed during the machining of bio-ceramic materials. The presence of edge chipping on bio-ceramic products affects dimensional accuracy, increases manufacturing cost, hider their industrial applications and causes potential failure during service. To overcome these technological challenges, a new ultrasonic vibration-assisted grinding (UVAG) manufacturing method has been developed and employed in this research.
520 $a The ultimate aim of this study is to develop a new cost-effective manufacturing process relevant to eliminate edge chippings in grinding of bio-ceramic materials. In this dissertation, comprehensive investigations will be carried out using experimental, theoretical, and numerical approaches to evaluate the effect of ultrasonic vibrations on edge chipping of bioceramics. Moreover, effects of nine input variables (static load, vibration frequency, grinding depth, spindle speed, grinding distance, tool speed, grain size, grain number, and vibration amplitude) on edge chipping will be studied based on the developed models.
520 $a Following a description of previous research and existing approaches, a series of experimental tests on three bio-ceramic materials (Lava, partially fired Lava, and Alumina) were conducted. Based on the experimental results, analytical models for UVAG and CG (conventional grinding without ultrasonic vibration) processes were developed. As for the numerical study, an extended finite element method (XFEM) based on Virtual Crack Closure Technique (VCCT) in ABAQUS was used to model the formation of edge chippings both for UVAG and CG processes.
520 $a The experimental results are compared against the numerical FEA and the analytical models. The experimental, theoretical, and computational simulation results revealed that the edge chipping size of bioceramics can be significantly reduced with the assistance of ultrasonic vibration.
520 $a The investigation procedures and the results obtained in this dissertation would be used as a reference and practical guidance for choosing reasonable process variables as well as designing mathematical (analytical and numerical) models in manufacturing industries and academic institutions when the edge chippings of brittle materials are expected to be controlled.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Biomedical engineering. $3 588770
650 4 $a Mechanical engineering. $3 557493
650 4 $a Materials science. $3 557839
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710 2 $a North Carolina Agricultural and Technical State University. $b Computational Science and Engineering. $3 1180329
773 0 $t Dissertation Abstracts International $g 78-04B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10167913 $z click for full text (PQDT)