Concept for In-process Measurement of Residual Stress in AM Processes by Analysis of Structure-Borne Sound
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Production at the Leading Edge of Technology: Proceedings of the 12th Congress of the German Academic Association for Production Technology (WGP), University of Stuttgart, October 2022. Hrsg. / Mathias Liewald; Alexander Verl; Thomas Bauernhansl; Hans-Christian Möhring. Springer Nature, 2023. S. 24-31 (Lecture Notes in Production Engineering; Band Part F1163).
Publikation: Beiträge in Sammelwerken › Kapitel › begutachtet
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TY - CHAP
T1 - Concept for In-process Measurement of Residual Stress in AM Processes by Analysis of Structure-Borne Sound
AU - Groenewold, Jan
AU - Stamer, Florian
AU - Lanza, Gisela
N1 - Publisher Copyright: © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2023
Y1 - 2023
N2 - Process-induced residual stress is a major challenge in today's additive manufacturing (AM) processes, such as powder bed fusion by laser beam melting of metal. After the AM process, the exact stress state is usually unknown, and parts often require heat treatment to relieve residual stress. In-process measurement of residual stress is currently not possible. This paper presents a concept to derive the measurement of the residual stress by analyzing the structure-borne sound induced during the AM process. The first step of the concept is to integrate a device into a build plate to set a defined mechanical load during the manufacturing process. Then, samples can be fabricated on this build plate in several steps. By applying mechanical load with the device, the stress state in the samples can be changed between the fabrication steps. During this stepwise fabrication process, the structure-borne sound signal is recorded. Subsequently, the correlation between the stress states and the acoustic process emissions is analyzed using FFT, STFT and cross-spectral analyses. The overall goal is to establish a model to determine residual stress in AM components by evaluating the acoustic process emissions.
AB - Process-induced residual stress is a major challenge in today's additive manufacturing (AM) processes, such as powder bed fusion by laser beam melting of metal. After the AM process, the exact stress state is usually unknown, and parts often require heat treatment to relieve residual stress. In-process measurement of residual stress is currently not possible. This paper presents a concept to derive the measurement of the residual stress by analyzing the structure-borne sound induced during the AM process. The first step of the concept is to integrate a device into a build plate to set a defined mechanical load during the manufacturing process. Then, samples can be fabricated on this build plate in several steps. By applying mechanical load with the device, the stress state in the samples can be changed between the fabrication steps. During this stepwise fabrication process, the structure-borne sound signal is recorded. Subsequently, the correlation between the stress states and the acoustic process emissions is analyzed using FFT, STFT and cross-spectral analyses. The overall goal is to establish a model to determine residual stress in AM components by evaluating the acoustic process emissions.
KW - Additive manufacturing
KW - Quality control
KW - Residual stress
KW - Structure-Borne sound
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85166664659&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-18318-8_3
DO - 10.1007/978-3-031-18318-8_3
M3 - Chapter
AN - SCOPUS:85166664659
SN - 978-3-031-18317-1
T3 - Lecture Notes in Production Engineering
SP - 24
EP - 31
BT - Production at the Leading Edge of Technology
A2 - Liewald, Mathias
A2 - Verl, Alexander
A2 - Bauernhansl, Thomas
A2 - Möhring, Hans-Christian
PB - Springer Nature
ER -