FINITE-ELEMENT MODEL DEVELOPING OF MEDIAN CRACK NUCLEATION AND GROWTH IN BK7 GLASS MICRO-MACHINING

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ASQARI MOHAMMAD AMIN; AKBARI JAVAD

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Modares Mechanical Engineering Year:2015 | Volume:15 | Issue:13 (SUPPLEMENT) Page(s): 24-28

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Title

FINITE-ELEMENT MODEL DEVELOPING OF MEDIAN CRACK NUCLEATION AND GROWTH IN BK7 GLASS MICRO-MACHINING

Author(s)

ASQARI MOHAMMAD AMIN | AKBARI JAVAD | Issue Writer Certificate

Keywords

BK7 GLASSQ2

COHESIVE ZONE METHOD (CZM)Q2

FINITE ELEMENT MODELQ2

MEDIAN CRACKQ2

MICROMACHININGQ1

Abstract

Surface and subsurface cracks in part are induced by mechanical cutting of brittle material specially glass which decrease part's life-cycle. The goal of this research is to present a FINITE ELEMENT MODEL for predicting induced MEDIAN CRACKs as the most deterministic cracks on the BK7 GLASS subsurface in MICROMACHINING. Bilinear Cohesive Zone Method (CZM) was used for simulation of crack and its specifications. CZM's parameters were obtained and calibrated by micro-Vickers experiment and the results were validated by micro-scratch test. FINITE ELEMENT MODEL demonstrated MEDIAN CRACKs dramatically increase from ductile-to-brittle-changing-regime point in micro-scratch. Finally, the validated FINITE ELEMENT MODEL facilitated the prediction of the depth of MEDIAN CRACKs with respect to tool cutting depth in MICROMACHINING.

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APA: Copy

ASQARI, MOHAMMAD AMIN, & AKBARI, JAVAD. (2015). FINITE-ELEMENT MODEL DEVELOPING OF MEDIAN CRACK NUCLEATION AND GROWTH IN BK7 GLASS MICRO-MACHINING. MODARES MECHANICAL ENGINEERING, 15(13 (SUPPLEMENT)), 24-28. SID. https://sid.ir/paper/177900/en

Vancouver: Copy

ASQARI MOHAMMAD AMIN, AKBARI JAVAD. FINITE-ELEMENT MODEL DEVELOPING OF MEDIAN CRACK NUCLEATION AND GROWTH IN BK7 GLASS MICRO-MACHINING. MODARES MECHANICAL ENGINEERING[Internet]. 2015;15(13 (SUPPLEMENT)):24-28. Available from: https://sid.ir/paper/177900/en

IEEE: Copy

MOHAMMAD AMIN ASQARI, and JAVAD AKBARI, “FINITE-ELEMENT MODEL DEVELOPING OF MEDIAN CRACK NUCLEATION AND GROWTH IN BK7 GLASS MICRO-MACHINING,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 13 (SUPPLEMENT), pp. 24–28, 2015, [Online]. Available: https://sid.ir/paper/177900/en

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