Numerical Investigation of Influence of Spot Geometry in Laser Peen Forming of Thin-Walled Ti-6Al-4V Specimens
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
Standard
Achievements and Trends in Material Forming: Peer-reviewed extended papers selected from the 25 th International Conference on Material Forming (ESAFORM 2022). Hrsg. / Gabriela Vincze; Frédéric Barlat. Baech: Trans Tech Publications Ltd, 2022. S. 2293-2302 (Key Engineering Materials; Band 926).
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung › begutachtet
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - CHAP
T1 - Numerical Investigation of Influence of Spot Geometry in Laser Peen Forming of Thin-Walled Ti-6Al-4V Specimens
AU - Pöltl, Dominik
AU - Keller, Sören
AU - Chupakhin, Sergey
AU - Sala, Siva Teja
AU - Kashaev, Nikolai
AU - Klusemann, Benjamin
N1 - Conference code: 25
PY - 2022/7/22
Y1 - 2022/7/22
N2 - The aviation industry demands thin-walled structures of high dimensional accuracy. Varying radii and individual use-cases, e.g. for repair purpose, require flexible forming techniques. Laser peen forming (LPF) represents such a forming process providing precise energy input by a pulsed laser over a wide energy range. Among adjustable parameters such as laser intensity and focus size, the spot shape, i.e. square and circular, is usually fixed for a specific laser system. As the spot shape is a crucial parameter, this work focuses on the effect of the spot shape on structural deformation after LPF application. Therefore, models for laser peen forming of thin-walled Ti-6Al-4V strips for LPF systems with circular and square focus shapes are set up. Geometric conditions on both focus shapes ensure equal energy input during the laser processing. The numerical simulation relies on the so called eigenstrain method, leading to a cost-efficient calculation of resulting deformation after the dynamic LPF process. Square-based peening pattern exhibit higher deflection. For increasing spot size, the deflection difference between square and circle-based patterns increase slightly.
AB - The aviation industry demands thin-walled structures of high dimensional accuracy. Varying radii and individual use-cases, e.g. for repair purpose, require flexible forming techniques. Laser peen forming (LPF) represents such a forming process providing precise energy input by a pulsed laser over a wide energy range. Among adjustable parameters such as laser intensity and focus size, the spot shape, i.e. square and circular, is usually fixed for a specific laser system. As the spot shape is a crucial parameter, this work focuses on the effect of the spot shape on structural deformation after LPF application. Therefore, models for laser peen forming of thin-walled Ti-6Al-4V strips for LPF systems with circular and square focus shapes are set up. Geometric conditions on both focus shapes ensure equal energy input during the laser processing. The numerical simulation relies on the so called eigenstrain method, leading to a cost-efficient calculation of resulting deformation after the dynamic LPF process. Square-based peening pattern exhibit higher deflection. For increasing spot size, the deflection difference between square and circle-based patterns increase slightly.
KW - bending
KW - eigenstrain
KW - Finite element analysis
KW - laser focus
KW - laser peen forming
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85140435721&partnerID=8YFLogxK
UR - https://main.scientific.net/book/achievements-and-trends-in-material-forming/978-3-0357-3750-9/ebook
U2 - 10.4028/p-9ur6l9
DO - 10.4028/p-9ur6l9
M3 - Article in conference proceedings
AN - SCOPUS:85140435721
SN - 978-3-0357-1759-4
T3 - Key Engineering Materials
SP - 2293
EP - 2302
BT - Achievements and Trends in Material Forming
A2 - Vincze, Gabriela
A2 - Barlat, Frédéric
PB - Trans Tech Publications Ltd
CY - Baech
T2 - Conference - 25th International Conference on Material Forming, ESAFORM 2022
Y2 - 27 April 2022 through 29 April 2022
ER -