Concept for In-process Measurement of Residual Stress in AM Processes by Analysis of Structure-Borne Sound

Research output: Contributions to collected editions/worksChapterpeer-review

Authors

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.

Original languageEnglish
Title of host publicationProduction 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
EditorsMathias Liewald, Alexander Verl, Thomas Bauernhansl, Hans-Christian Möhring
Number of pages8
PublisherSpringer Nature
Publication date2023
Pages24-31
ISBN (print)978-3-031-18317-1
ISBN (electronic)978-3-031-18320-1, 978-3-031-18318-8
DOIs
Publication statusPublished - 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

    Research areas

  • Additive manufacturing, Quality control, Residual stress, Structure-Borne sound
  • Engineering

Recently viewed

Publications

  1. Hypertext
  2. Metaheuristics approach for solving personalized crew rostering problem in public bus transit
  3. Evaluating a Bayesian Student Model of Decimal Misconceptions
  4. Biodegradation screening of chemicals in an artificial matrix simulating the water-sediment interface
  5. An empirical comparison of different implicit measures to predict consumer choice
  6. Sliding Mode Control of an Inductive Power Transmission System with Maximum Efficiency
  7. Spaces with a temper
  8. Introduction
  9. Bayesian Parameter Estimation in Green Business Process Management
  10. Different kinds of interactive exercises with response analysis on the web
  11. Promising practices for dealing with complexity in research for development
  12. Soft Optimal Computing Methods to Identify Surface Roughness in Manufacturing Using a Monotonic Regressor
  13. Transfer operator-based extraction of coherent features on surfaces
  14. A Review of the Application of Machine Learning and Data Mining Approaches in Continuum Materials Mechanics
  15. Agency and structure in a sociotechnical transition
  16. Special Issue in Acquisitional Pragmatics in Foreign Language Learning
  17. Database on Learning for Sustainable Development – analysis of projects
  18. Mathematics in Robot Control for Theoretical and Applied Problems
  19. Distributed robust Gaussian Process regression
  20. The identification of up-And downstream industries using input-output tables and a firm-level application to minority shareholdings
  21. Simulation based comparison of safety-stock calculation methods
  22. Need Satisfaction and Optimal Functioning at Leisure and Work: A Longitudinal Validation Study of the DRAMMA Model
  23. Rapid allocation of temporal attention in the Attentional Blink Paradigm
  24. Implementation of a Blended-Learning Course as Part of Faculty Development
  25. Processing of CSR communication
  26. Teachers’ temporary support and worked-out examples as elements of scaffolding in mathematical modeling