Defects formation mechanism and evaluation of surface roughness in machining Al/SiCp composites

During machining Al/SiCp composites, the machined surface takes on many defects such as grooves, pits, voids and protuberances, which greatly affect the characterization parameters of surface topography. However, a detailed investigation of the formation mechanism of surface defects in machining Al/...

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Main Authors: Chunzheng DUAN, Wei SUN, Zhan FENG, Fangyuan ZHANG
Format: Article
Language:English
Published: The Japan Society of Mechanical Engineers 2018-01-01
Series:Journal of Advanced Mechanical Design, Systems, and Manufacturing
Subjects:
Online Access:https://www.jstage.jst.go.jp/article/jamdsm/12/1/12_2018jamdsm0005/_pdf/-char/en
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author Chunzheng DUAN
Wei SUN
Zhan FENG
Fangyuan ZHANG
author_facet Chunzheng DUAN
Wei SUN
Zhan FENG
Fangyuan ZHANG
author_sort Chunzheng DUAN
collection DOAJ
description During machining Al/SiCp composites, the machined surface takes on many defects such as grooves, pits, voids and protuberances, which greatly affect the characterization parameters of surface topography. However, a detailed investigation of the formation mechanism of surface defects in machining Al/SiCp composites is still lacking, and few surface roughness evaluation methods have been developed for separating the surface defects from roughness. In this paper, the formation mechanism of surface defects is revealed, and a roughness extraction method based on DT-CWT is established to extract the surface defects from roughness and conduct a roughness evaluation on the machined surface of Al/SiCp composites. Compared with the least-square method and Gaussian filter, the roughness extraction method based on DT-CWT has higher stability and can effectively distinguish between surface roughness and surface defects. According to the surface roughness evaluation based on the roughness extraction method, it is found that the surface roughness value of 2024Al/SiCp composite is lower compared to 6063Al/SiCp composite.
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spelling doaj.art-82bb8fc00d2642ae95213671a24a8f362022-12-22T02:59:38ZengThe Japan Society of Mechanical EngineersJournal of Advanced Mechanical Design, Systems, and Manufacturing1881-30542018-01-01121JAMDSM0005JAMDSM000510.1299/jamdsm.2018jamdsm0005jamdsmDefects formation mechanism and evaluation of surface roughness in machining Al/SiCp compositesChunzheng DUAN0Wei SUN1Zhan FENG2Fangyuan ZHANG3School of Mechanical Engineering, Dalian University of TechnologySchool of Mechanical Engineering, Dalian University of TechnologySchool of Mechanical Engineering, Dalian University of TechnologySchool of Mechanical Engineering, Dalian University of TechnologyDuring machining Al/SiCp composites, the machined surface takes on many defects such as grooves, pits, voids and protuberances, which greatly affect the characterization parameters of surface topography. However, a detailed investigation of the formation mechanism of surface defects in machining Al/SiCp composites is still lacking, and few surface roughness evaluation methods have been developed for separating the surface defects from roughness. In this paper, the formation mechanism of surface defects is revealed, and a roughness extraction method based on DT-CWT is established to extract the surface defects from roughness and conduct a roughness evaluation on the machined surface of Al/SiCp composites. Compared with the least-square method and Gaussian filter, the roughness extraction method based on DT-CWT has higher stability and can effectively distinguish between surface roughness and surface defects. According to the surface roughness evaluation based on the roughness extraction method, it is found that the surface roughness value of 2024Al/SiCp composite is lower compared to 6063Al/SiCp composite.https://www.jstage.jst.go.jp/article/jamdsm/12/1/12_2018jamdsm0005/_pdf/-char/enal/sicp compositessurface roughnesscutting forcefractal dimensiondual tree complex wavelet transform
spellingShingle Chunzheng DUAN
Wei SUN
Zhan FENG
Fangyuan ZHANG
Defects formation mechanism and evaluation of surface roughness in machining Al/SiCp composites
Journal of Advanced Mechanical Design, Systems, and Manufacturing
al/sicp composites
surface roughness
cutting force
fractal dimension
dual tree complex wavelet transform
title Defects formation mechanism and evaluation of surface roughness in machining Al/SiCp composites
title_full Defects formation mechanism and evaluation of surface roughness in machining Al/SiCp composites
title_fullStr Defects formation mechanism and evaluation of surface roughness in machining Al/SiCp composites
title_full_unstemmed Defects formation mechanism and evaluation of surface roughness in machining Al/SiCp composites
title_short Defects formation mechanism and evaluation of surface roughness in machining Al/SiCp composites
title_sort defects formation mechanism and evaluation of surface roughness in machining al sicp composites
topic al/sicp composites
surface roughness
cutting force
fractal dimension
dual tree complex wavelet transform
url https://www.jstage.jst.go.jp/article/jamdsm/12/1/12_2018jamdsm0005/_pdf/-char/en
work_keys_str_mv AT chunzhengduan defectsformationmechanismandevaluationofsurfaceroughnessinmachiningalsicpcomposites
AT weisun defectsformationmechanismandevaluationofsurfaceroughnessinmachiningalsicpcomposites
AT zhanfeng defectsformationmechanismandevaluationofsurfaceroughnessinmachiningalsicpcomposites
AT fangyuanzhang defectsformationmechanismandevaluationofsurfaceroughnessinmachiningalsicpcomposites