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Experimental analysis of sheet metal micro-bending using a nanosecond-pulsed laser.

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Title: Experimental analysis of sheet metal micro-bending using a nanosecond-pulsed laser.
Authors: Pence, Chelsey1, Ding, Hua2, Shen, Ninggang1, Ding, Hongtao1 hongtao-ding@uiowa.edu
Source: International Journal of Advanced Manufacturing Technology. Oct2013, Vol. 69 Issue 1-4, p319-327. 9p.
Subjects: Sheet metal, Microbending, Pulsed lasers, Aluminum sheets, Regression analysis, Parameter estimation
Abstract: Laser shock bending is a sheet metal micro-forming process using shock waves induced by a nanosecond-pulsed laser. It is developed to accurately bend, shape, precision align, or repair micro-components with bending angles less than 10°. Negative bending angle (away from laser beam) can be achieved with the high-energy pulsed laser, despite the conventional positive laser bending mechanism. In this research, various experimental and numerical studies on aluminum sheets are conducted to investigate the different deformation mechanism, positive or negative. The experiments are conducted with the sheet thickness varying from 0.25 to 1.75 mm and laser pulse energy of 0.2 to 0.5 J. A critical thickness threshold of 0.7-0.88 mm is found that the transition of positive-negative bending mechanism occurs. A statistic regression analysis is developed to determine the bending angle as a function of laser process parameters for positive bending cases. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Advanced Manufacturing Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Experimental analysis of sheet metal micro-bending using a nanosecond-pulsed laser.
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  Data: <searchLink fieldCode="AR" term="%22Pence%2C+Chelsey%22">Pence, Chelsey</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ding%2C+Hua%22">Ding, Hua</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Shen%2C+Ninggang%22">Shen, Ninggang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ding%2C+Hongtao%22">Ding, Hongtao</searchLink><relatesTo>1</relatesTo><i> hongtao-ding@uiowa.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Advanced+Manufacturing+Technology%22">International Journal of Advanced Manufacturing Technology</searchLink>. Oct2013, Vol. 69 Issue 1-4, p319-327. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Sheet+metal%22">Sheet metal</searchLink><br /><searchLink fieldCode="DE" term="%22Microbending%22">Microbending</searchLink><br /><searchLink fieldCode="DE" term="%22Pulsed+lasers%22">Pulsed lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Aluminum+sheets%22">Aluminum sheets</searchLink><br /><searchLink fieldCode="DE" term="%22Regression+analysis%22">Regression analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Parameter+estimation%22">Parameter estimation</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Laser shock bending is a sheet metal micro-forming process using shock waves induced by a nanosecond-pulsed laser. It is developed to accurately bend, shape, precision align, or repair micro-components with bending angles less than 10°. Negative bending angle (away from laser beam) can be achieved with the high-energy pulsed laser, despite the conventional positive laser bending mechanism. In this research, various experimental and numerical studies on aluminum sheets are conducted to investigate the different deformation mechanism, positive or negative. The experiments are conducted with the sheet thickness varying from 0.25 to 1.75 mm and laser pulse energy of 0.2 to 0.5 J. A critical thickness threshold of 0.7-0.88 mm is found that the transition of positive-negative bending mechanism occurs. A statistic regression analysis is developed to determine the bending angle as a function of laser process parameters for positive bending cases. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of International Journal of Advanced Manufacturing Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s00170-013-5032-8
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        Text: English
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        PageCount: 9
        StartPage: 319
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      – SubjectFull: Sheet metal
        Type: general
      – SubjectFull: Microbending
        Type: general
      – SubjectFull: Pulsed lasers
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      – SubjectFull: Aluminum sheets
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      – SubjectFull: Regression analysis
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      – SubjectFull: Parameter estimation
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              Text: Oct2013
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              Y: 2013
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