Regression modeling to predict the geometrical features of Ti6Al4V thin sheets butt joints welded by disk laser

Fabrizia Caiazzo; Ernesto Mastrocinque; Gaetano Corrado; Vincenzo Sergi

doi:10.1117/12.922472

Regression modeling to predict the geometrical features of Ti6Al4V thin sheets butt joints welded by disk laser

Fabrizia Caiazzo, Ernesto Mastrocinque, Gaetano Corrado, Vincenzo Sergi

University of Salerno

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The aim of this work is to investigate the effects of power, welding speed, defocusing on geometric features and on defects of 1 mm Ti6Al4V laser welded butt joints by a new generation disk laser with 2 kW of maximum power. Them active gain is a Yb:YAG disk instead of traditional Nd:YAG rods. Disk geometry allows to keep the nominal beam quality also at high power because there is no thermal lensing effect, typical of rod geometry. A three level Box-Behnken experimental design with three repetitions is carried out for a total of 45 tests. Linear and quadratic regression equations are developed to relate the input factors to the output variables in order to predict the geometric features of butt joints.

Original language	English
Article number	84330Y
Number of pages	11
Journal	Proceedings of the SPIE
Volume	8433
DOIs	https://doi.org/10.1117/12.922472
Publication status	Published - 1 Jun 2012

Keywords

disk lasers
modeling
rods
ytterbium
lasers

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10.1117/12.922472

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abstract = "The aim of this work is to investigate the effects of power, welding speed, defocusing on geometric features and on defects of 1 mm Ti6Al4V laser welded butt joints by a new generation disk laser with 2 kW of maximum power. Them active gain is a Yb:YAG disk instead of traditional Nd:YAG rods. Disk geometry allows to keep the nominal beam quality also at high power because there is no thermal lensing effect, typical of rod geometry. A three level Box-Behnken experimental design with three repetitions is carried out for a total of 45 tests. Linear and quadratic regression equations are developed to relate the input factors to the output variables in order to predict the geometric features of butt joints.",

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T1 - Regression modeling to predict the geometrical features of Ti6Al4V thin sheets butt joints welded by disk laser

AU - Caiazzo, Fabrizia

AU - Mastrocinque, Ernesto

AU - Corrado, Gaetano

AU - Sergi, Vincenzo

PY - 2012/6/1

Y1 - 2012/6/1

N2 - The aim of this work is to investigate the effects of power, welding speed, defocusing on geometric features and on defects of 1 mm Ti6Al4V laser welded butt joints by a new generation disk laser with 2 kW of maximum power. Them active gain is a Yb:YAG disk instead of traditional Nd:YAG rods. Disk geometry allows to keep the nominal beam quality also at high power because there is no thermal lensing effect, typical of rod geometry. A three level Box-Behnken experimental design with three repetitions is carried out for a total of 45 tests. Linear and quadratic regression equations are developed to relate the input factors to the output variables in order to predict the geometric features of butt joints.

AB - The aim of this work is to investigate the effects of power, welding speed, defocusing on geometric features and on defects of 1 mm Ti6Al4V laser welded butt joints by a new generation disk laser with 2 kW of maximum power. Them active gain is a Yb:YAG disk instead of traditional Nd:YAG rods. Disk geometry allows to keep the nominal beam quality also at high power because there is no thermal lensing effect, typical of rod geometry. A three level Box-Behnken experimental design with three repetitions is carried out for a total of 45 tests. Linear and quadratic regression equations are developed to relate the input factors to the output variables in order to predict the geometric features of butt joints.

KW - disk lasers

KW - modeling

KW - rods

KW - ytterbium

KW - lasers

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DO - 10.1117/12.922472

M3 - Article

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VL - 8433

JO - Proceedings of the SPIE

JF - Proceedings of the SPIE

M1 - 84330Y

ER -

Regression modeling to predict the geometrical features of Ti6Al4V thin sheets butt joints welded by disk laser

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