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Statistical analysis of the reproducibility of residual stress measurements in cold extruded parts

Jaeger, Fabian ; Franceschi, Alessandro ; Hoche, Holger ; Groche, Peter ; Oechsner, Matthias (2024)
Statistical analysis of the reproducibility of residual stress measurements in cold extruded parts.
In: Archive of Applied Mechanics, 2021, 91 (8)
doi: 10.26083/tuprints-00023468
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Statistical analysis of the reproducibility of residual stress measurements in cold extruded parts
Language: English
Date: 5 April 2024
Place of Publication: Darmstadt
Year of primary publication: 2021
Place of primary publication: Berlin ; Heidelberg
Publisher: Springer
Journal or Publication Title: Archive of Applied Mechanics
Volume of the journal: 91
Issue Number: 8
DOI: 10.26083/tuprints-00023468
Corresponding Links:
Origin: Secondary publication DeepGreen

Cold extruded components are characterized by residual stresses, which originate from the experienced manufacturing process. For industrial applications, reproducibility and homogeneity of the final components are key aspects for an optimized quality control. Although striving to obtain identical deformation and surface conditions, fluctuation in the manufacturing parameters and contact shear conditions during the forming process may lead to variations of the spatial residual stress distribution in the final product. This could lead to a dependency of the residual stress measurement results on the relative axial and circumferential position on the sample. An attempt to examine this problem is made by the employment of design of experiments (DoE) methods. A statistical analysis of the residual stress results generated through X-Ray diffraction is performed. Additionally, the ability of cold extrusion processes to generate uniform stress states is analyzed on specimens of austenitic stainless steel 1.4404 and possible correlations with the pre-deformed condition are statistically examined. Moreover, the influence of the coating, consisting of oxalate and a MoS₂ based lubricant, on the X-Ray diffraction measurements of the surface is investigated.

Uncontrolled Keywords: 316 L, 1.4404, Austenitic stainless steel, Residual stresses, Cold extrusion, X-ray diffraction, Sin² Ψ, Design of experiments
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-234687
Additional Information:

Special Issue: Forming Induced Residual Stresses - Experiment, Modelling, Simulation

Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 16 Department of Mechanical Engineering > Center for Engineering Materials, State Materials Testing Institute Darmstadt (MPA) Chair and Institute for Materials Technology (IfW)
16 Department of Mechanical Engineering > Institut für Produktionstechnik und Umformmaschinen (PtU)
Date Deposited: 05 Apr 2024 11:05
Last Modified: 09 Apr 2024 09:07
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23468
PPN: 516968793
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