Finite element modelling of bilayer iron powder compaction and evaluation on its relative density distribution using imaging technique

Multilayer compaction allows the manufacturing of advanced metal-based components ranging from long thin-walled sleeves to cutting tools. Combination of compressed powder layers has been proven to upgrade its mechanical properties in terms of its strength, durability and toughness compared to an...

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Main Author:	Mohd Yusoff, Syamimi
Format:	Thesis
Language:	English
Published:	2022
Subjects:	Finite element method Iron powder Compacting
Online Access:	http://psasir.upm.edu.my/id/eprint/99114/1/FK%202022%2073%20IR.pdf
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id	my-upm-ir.99114
record_format	uketd_dc
spelling	my-upm-ir.991142023-06-14T08:03:11Z Finite element modelling of bilayer iron powder compaction and evaluation on its relative density distribution using imaging technique 2022-06 Mohd Yusoff, Syamimi Multilayer compaction allows the manufacturing of advanced metal-based components ranging from long thin-walled sleeves to cutting tools. Combination of compressed powder layers has been proven to upgrade its mechanical properties in terms of its strength, durability and toughness compared to an individual layer. Following this, modern apparatus has applied layering principles to sustain the usage in daily life. Nevertheless, at the scale of research and development, inspection on unify powder layers are scant in the aspect of its internal density, particularly on its interconnected boundary layers or interface. This invites untimely defects of delamination and capping that would require unnecessary investment of time and effort during the secondary PM operation. All the while, the scope of density measurement has resorted to geometrical definition and hardness; thus, less modelling efforts had been undertaken to examine the sectioned powder layers. This study has developed an imaging technique and modelling procedures to assess the local relative density (or local RD) distribution on green single and bilayer iron ASC 100.29 powder compact. The modelling strategy was developed based on Finite Element Method (FEM) using Abaqus 6.20. The results of experimental distributed local RD values showed close agreement with values mentioned in the literature for green single layer powder compact and the current work was further improved with higher pixels. As expected, the modelled local RD values were validated for experimental local RD values green bilayer iron powder compact. Further, it was revealed that the highest local RD distribution on the interface of bilayer iron powder compact was obtained with H/D ratio of 1.6 under lubricated die condition. Besides, under all H/D ratios and low friction coefficient (μ of 0.08), smaller gradient of local RD distribution has been achieved by green bilayer iron powder compact compared to single layer iron powder compact with the same applied conditions. Finite element method Iron powder Compacting 2022-06 Thesis http://psasir.upm.edu.my/id/eprint/99114/ http://psasir.upm.edu.my/id/eprint/99114/1/FK%202022%2073%20IR.pdf text en public doctoral Universiti Putra Malaysia Finite element method Iron powder Compacting Mohd Tahir, Suraya
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
advisor	Mohd Tahir, Suraya
topic	Finite element method Iron powder Compacting
spellingShingle	Finite element method Iron powder Compacting Mohd Yusoff, Syamimi Finite element modelling of bilayer iron powder compaction and evaluation on its relative density distribution using imaging technique
description	Multilayer compaction allows the manufacturing of advanced metal-based components ranging from long thin-walled sleeves to cutting tools. Combination of compressed powder layers has been proven to upgrade its mechanical properties in terms of its strength, durability and toughness compared to an individual layer. Following this, modern apparatus has applied layering principles to sustain the usage in daily life. Nevertheless, at the scale of research and development, inspection on unify powder layers are scant in the aspect of its internal density, particularly on its interconnected boundary layers or interface. This invites untimely defects of delamination and capping that would require unnecessary investment of time and effort during the secondary PM operation. All the while, the scope of density measurement has resorted to geometrical definition and hardness; thus, less modelling efforts had been undertaken to examine the sectioned powder layers. This study has developed an imaging technique and modelling procedures to assess the local relative density (or local RD) distribution on green single and bilayer iron ASC 100.29 powder compact. The modelling strategy was developed based on Finite Element Method (FEM) using Abaqus 6.20. The results of experimental distributed local RD values showed close agreement with values mentioned in the literature for green single layer powder compact and the current work was further improved with higher pixels. As expected, the modelled local RD values were validated for experimental local RD values green bilayer iron powder compact. Further, it was revealed that the highest local RD distribution on the interface of bilayer iron powder compact was obtained with H/D ratio of 1.6 under lubricated die condition. Besides, under all H/D ratios and low friction coefficient (μ of 0.08), smaller gradient of local RD distribution has been achieved by green bilayer iron powder compact compared to single layer iron powder compact with the same applied conditions.
format	Thesis
qualification_level	Doctorate
author	Mohd Yusoff, Syamimi
author_facet	Mohd Yusoff, Syamimi
author_sort	Mohd Yusoff, Syamimi
title	Finite element modelling of bilayer iron powder compaction and evaluation on its relative density distribution using imaging technique
title_short	Finite element modelling of bilayer iron powder compaction and evaluation on its relative density distribution using imaging technique
title_full	Finite element modelling of bilayer iron powder compaction and evaluation on its relative density distribution using imaging technique
title_fullStr	Finite element modelling of bilayer iron powder compaction and evaluation on its relative density distribution using imaging technique
title_full_unstemmed	Finite element modelling of bilayer iron powder compaction and evaluation on its relative density distribution using imaging technique
title_sort	finite element modelling of bilayer iron powder compaction and evaluation on its relative density distribution using imaging technique
granting_institution	Universiti Putra Malaysia
publishDate	2022
url	http://psasir.upm.edu.my/id/eprint/99114/1/FK%202022%2073%20IR.pdf
_version_	1776100295422509056

Finite element modelling of bilayer iron powder compaction and evaluation on its relative density distribution using imaging technique

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