Experimental investigation of laser forming process to produce dome-shaped products
The laser forming process is a new non-contact forming process which does not involve hard tooling. The bending occurs by a scanning laser beam causing localized heating resulting in localized plastic deformation which gives controlled bending with no spring back on cooling. A line bend is achieved...
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Veröffentlicht in: | International journal of advanced manufacturing technology 2017-04, Vol.90 (1-4), p.1051-1057 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The laser forming process is a new non-contact forming process which does not involve hard tooling. The bending occurs by a scanning laser beam causing localized heating resulting in localized plastic deformation which gives controlled bending with no spring back on cooling. A line bend is achieved by scanning in a straight line over the surface; more complex shaped surfaces, e.g., domes and pillow shapes require more complex scan patterns. In this manuscript, the forming of a dome-shaped structure from a flat circular aluminum sheet by a “spider” like scan pattern is discussed. The effect of varying the laser power, beam diameter, scan velocity, and number of scan passes on the dome height is shown experimentally. The results show that the dome height rises with increase in laser power or number of passes and a decrease in the beam diameter and scan velocity. A statistical fit equation using analysis of variance (ANOVA) is derived to predict the dome height as a function of these variables. |
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ISSN: | 0268-3768 1433-3015 |
DOI: | 10.1007/s00170-016-9437-z |