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Blanking induced damage in thin 3.2% silicon steel sheets

H. Ghadbeigi Orcid Logo, A. Al-Rubaye, F. C. J. Robinson, Diween Hawezy, Soran Birosca Orcid Logo, K. Atallah

Production Engineering, Volume: 14, Issue: 1, Pages: 53 - 64

Swansea University Authors: Diween Hawezy, Soran Birosca Orcid Logo

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DOI (Published version): 10.1007/s11740-019-00931-1

Abstract

The cores of electrical motors and transformers are made by blanking, piercing and stacking of thin metallic sheets having various features cut from the original blank. The material experiences local plastic deformation near the cut edge due to the blanking operation. The quality and efficiency of t...

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Published in: Production Engineering
ISSN: 0944-6524 1863-7353
Published: Springer Science and Business Media LLC 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa52704
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The material experiences local plastic deformation near the cut edge due to the blanking operation. The quality and efficiency of the produced products are directly affected by the mechanical and magnetic properties of the blanks at the cut edge. The effects of the blanking process on deformation evolution in thin sheets of high Si electrical steels was investigated. In-situ blanking experiments together with the digital image correlation (DIC) technique were used to quantify local deformation evolution during thin sheet blanking operations. Magnetic hysteresis losses were measured using a purpose-built single sheet tester and linked to the measured deformation maps. The residual stresses were qualitatively assessed by means of nano-hardness measurements while the local microstructural properties and dislocation generations were determined using EBSD analysis of the blanked parts. The results indicated that for the tested materials with 0.1t blanking clearance, electrical steel sheets with 0.2 mm thickness experiences larger deformation prior to fracture during blanking compared with samples having 0.35 mm thickness. This has a direct relationship with the measured hysteresis losses. However, the dislocation maps indicated that dislocations of GNDs are more pronounced for thicker samples that aligns with the effect of dislocations on magnetic power losses rather than hysteresis losses measured in this research.</abstract><type>Journal Article</type><journal>Production Engineering</journal><volume>14</volume><journalNumber>1</journalNumber><paginationStart>53</paginationStart><paginationEnd>64</paginationEnd><publisher>Springer Science and Business Media LLC</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>0944-6524</issnPrint><issnElectronic>1863-7353</issnElectronic><keywords>Silicon steel, Blanking, Damage, Strain, DIC</keywords><publishedDay>1</publishedDay><publishedMonth>2</publishedMonth><publishedYear>2020</publishedYear><publishedDate>2020-02-01</publishedDate><doi>10.1007/s11740-019-00931-1</doi><url>http://dx.doi.org/10.1007/s11740-019-00931-1</url><notes/><college>COLLEGE NANME</college><department>Science and Engineering - Faculty</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>FGSEN</DepartmentCode><institution>Swansea University</institution><apcterm/><funders/><projectreference/><lastEdited>2023-03-17T11:07:48.0940645</lastEdited><Created>2019-11-11T11:50:28.0792315</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2"/></path><authors><author><firstname>H.</firstname><surname>Ghadbeigi</surname><orcid>0000-0001-6507-2353</orcid><order>1</order></author><author><firstname>A.</firstname><surname>Al-Rubaye</surname><order>2</order></author><author><firstname>F. 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spelling 2023-03-17T11:07:48.0940645 v2 52704 2019-11-11 Blanking induced damage in thin 3.2% silicon steel sheets 6e4acc8a46efa9a375bc4f426ef0bd5a Diween Hawezy Diween Hawezy true false 3445603fcc2ff9d27b476a73b223a507 0000-0002-8380-771X Soran Birosca Soran Birosca true false 2019-11-11 FGSEN The cores of electrical motors and transformers are made by blanking, piercing and stacking of thin metallic sheets having various features cut from the original blank. The material experiences local plastic deformation near the cut edge due to the blanking operation. The quality and efficiency of the produced products are directly affected by the mechanical and magnetic properties of the blanks at the cut edge. The effects of the blanking process on deformation evolution in thin sheets of high Si electrical steels was investigated. In-situ blanking experiments together with the digital image correlation (DIC) technique were used to quantify local deformation evolution during thin sheet blanking operations. Magnetic hysteresis losses were measured using a purpose-built single sheet tester and linked to the measured deformation maps. The residual stresses were qualitatively assessed by means of nano-hardness measurements while the local microstructural properties and dislocation generations were determined using EBSD analysis of the blanked parts. The results indicated that for the tested materials with 0.1t blanking clearance, electrical steel sheets with 0.2 mm thickness experiences larger deformation prior to fracture during blanking compared with samples having 0.35 mm thickness. This has a direct relationship with the measured hysteresis losses. However, the dislocation maps indicated that dislocations of GNDs are more pronounced for thicker samples that aligns with the effect of dislocations on magnetic power losses rather than hysteresis losses measured in this research. Journal Article Production Engineering 14 1 53 64 Springer Science and Business Media LLC 0944-6524 1863-7353 Silicon steel, Blanking, Damage, Strain, DIC 1 2 2020 2020-02-01 10.1007/s11740-019-00931-1 http://dx.doi.org/10.1007/s11740-019-00931-1 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2023-03-17T11:07:48.0940645 2019-11-11T11:50:28.0792315 Faculty of Science and Engineering H. Ghadbeigi 0000-0001-6507-2353 1 A. Al-Rubaye 2 F. C. J. Robinson 3 Diween Hawezy 4 Soran Birosca 0000-0002-8380-771X 5 K. Atallah 6 52704__15848__d5369480d30f48acab9cce4b1b99699c.pdf ghadbeigi2019.pdf 2019-11-11T11:52:13.3135223 Output 2252995 application/pdf Version of Record true 2019-11-11T00:00:00.0000000 false © The Author(s) 2019 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
title Blanking induced damage in thin 3.2% silicon steel sheets
spellingShingle Blanking induced damage in thin 3.2% silicon steel sheets
Diween Hawezy
Soran Birosca
title_short Blanking induced damage in thin 3.2% silicon steel sheets
title_full Blanking induced damage in thin 3.2% silicon steel sheets
title_fullStr Blanking induced damage in thin 3.2% silicon steel sheets
title_full_unstemmed Blanking induced damage in thin 3.2% silicon steel sheets
title_sort Blanking induced damage in thin 3.2% silicon steel sheets
author_id_str_mv 6e4acc8a46efa9a375bc4f426ef0bd5a
3445603fcc2ff9d27b476a73b223a507
author_id_fullname_str_mv 6e4acc8a46efa9a375bc4f426ef0bd5a_***_Diween Hawezy
3445603fcc2ff9d27b476a73b223a507_***_Soran Birosca
author Diween Hawezy
Soran Birosca
author2 H. Ghadbeigi
A. Al-Rubaye
F. C. J. Robinson
Diween Hawezy
Soran Birosca
K. Atallah
format Journal article
container_title Production Engineering
container_volume 14
container_issue 1
container_start_page 53
publishDate 2020
institution Swansea University
issn 0944-6524
1863-7353
doi_str_mv 10.1007/s11740-019-00931-1
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
url http://dx.doi.org/10.1007/s11740-019-00931-1
document_store_str 1
active_str 0
description The cores of electrical motors and transformers are made by blanking, piercing and stacking of thin metallic sheets having various features cut from the original blank. The material experiences local plastic deformation near the cut edge due to the blanking operation. The quality and efficiency of the produced products are directly affected by the mechanical and magnetic properties of the blanks at the cut edge. The effects of the blanking process on deformation evolution in thin sheets of high Si electrical steels was investigated. In-situ blanking experiments together with the digital image correlation (DIC) technique were used to quantify local deformation evolution during thin sheet blanking operations. Magnetic hysteresis losses were measured using a purpose-built single sheet tester and linked to the measured deformation maps. The residual stresses were qualitatively assessed by means of nano-hardness measurements while the local microstructural properties and dislocation generations were determined using EBSD analysis of the blanked parts. The results indicated that for the tested materials with 0.1t blanking clearance, electrical steel sheets with 0.2 mm thickness experiences larger deformation prior to fracture during blanking compared with samples having 0.35 mm thickness. This has a direct relationship with the measured hysteresis losses. However, the dislocation maps indicated that dislocations of GNDs are more pronounced for thicker samples that aligns with the effect of dislocations on magnetic power losses rather than hysteresis losses measured in this research.
published_date 2020-02-01T04:05:14Z
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score 11.036006

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