Numerical and experimental study of micro single point incremental forming process

Single-point incremental sheet forming (SPISF), which has clear advantages of reducing tooling cost and increasing material formability, witnessed increasing interest from both academia and industry in the last two decades. As a rapid manufacturing method, SPISF can fabricate customized parts of...

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Main Author: Zhang, Jing
Other Authors: Sylvie Castagne
Format: Theses and Dissertations
Language:English
Published: 2016
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Online Access:http://hdl.handle.net/10356/68886
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-688862023-03-11T16:52:55Z Numerical and experimental study of micro single point incremental forming process Zhang, Jing Sylvie Castagne School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering Single-point incremental sheet forming (SPISF), which has clear advantages of reducing tooling cost and increasing material formability, witnessed increasing interest from both academia and industry in the last two decades. As a rapid manufacturing method, SPISF can fabricate customized parts of thin shell miniature structures flexibly and quickly. The main characteristics of this method are its high flexibility, die-less, short development time, material formability improvement and cost reduction. Comparing to 30 printing, it possesses the same virtue of 30 shaping and high-mix-low-volume manufacturing, but it also has the advantages (over 30 printing) of quicker processing time, fewer pre- and post-processing steps (i.e. heat treatment), cheaper raw material (sheet rather than powder) and higher material strength (no porosity). Although SPISF at macroscale is extensively studied, the process characteristics at microscale are less known. The project emphasizes on the combined approach using both numerical and experimental trials to study the deformation mechanisms in micro SPISF process to gain better understanding on the influence of process parameters on forming behavior. A truncated pyramid with variable half apex angle was proposed at the end of the project to serve as the standard geometry for formability test of sheet material used in this process. Comparisons made on the overall geometry of the workpiece reveal good agreement between the part obtained by simulation and that obtained during experiments. Master of Science (Mechanical Engineering) 2016-07-05T07:43:25Z 2016-07-05T07:43:25Z 2016 Thesis http://hdl.handle.net/10356/68886 en 78 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering
spellingShingle DRNTU::Engineering::Mechanical engineering
Zhang, Jing
Numerical and experimental study of micro single point incremental forming process
description Single-point incremental sheet forming (SPISF), which has clear advantages of reducing tooling cost and increasing material formability, witnessed increasing interest from both academia and industry in the last two decades. As a rapid manufacturing method, SPISF can fabricate customized parts of thin shell miniature structures flexibly and quickly. The main characteristics of this method are its high flexibility, die-less, short development time, material formability improvement and cost reduction. Comparing to 30 printing, it possesses the same virtue of 30 shaping and high-mix-low-volume manufacturing, but it also has the advantages (over 30 printing) of quicker processing time, fewer pre- and post-processing steps (i.e. heat treatment), cheaper raw material (sheet rather than powder) and higher material strength (no porosity). Although SPISF at macroscale is extensively studied, the process characteristics at microscale are less known. The project emphasizes on the combined approach using both numerical and experimental trials to study the deformation mechanisms in micro SPISF process to gain better understanding on the influence of process parameters on forming behavior. A truncated pyramid with variable half apex angle was proposed at the end of the project to serve as the standard geometry for formability test of sheet material used in this process. Comparisons made on the overall geometry of the workpiece reveal good agreement between the part obtained by simulation and that obtained during experiments.
author2 Sylvie Castagne
author_facet Sylvie Castagne
Zhang, Jing
format Theses and Dissertations
author Zhang, Jing
author_sort Zhang, Jing
title Numerical and experimental study of micro single point incremental forming process
title_short Numerical and experimental study of micro single point incremental forming process
title_full Numerical and experimental study of micro single point incremental forming process
title_fullStr Numerical and experimental study of micro single point incremental forming process
title_full_unstemmed Numerical and experimental study of micro single point incremental forming process
title_sort numerical and experimental study of micro single point incremental forming process
publishDate 2016
url http://hdl.handle.net/10356/68886
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