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Single-Sensor Vibration-Scanning Method for Assessing the Mechanical Properties of 3D Printed Elements.

Ryszard Buchalik1, Grzegorz Nowak1

  • 1Department of Power Engineering and Turbomachinery, Silesian University of Technology, Konarskiego 18, 44-100 Gliwice, Poland.

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Summary

This study details a new automated test stand for assessing mechanical properties of 3D printed parts. It uses contactless optical methods and a novel phase angle measurement for precise analysis of materials like PLA.

Keywords:
3D printingAdditive Manufacturingmaterial propertiesphase shift measurementresonancevibration scanningvibration shapes

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Area of Science:

  • Mechanical Engineering
  • Materials Science
  • Additive Manufacturing

Background:

  • Assessing mechanical properties of 3D printed components is crucial for their application.
  • Traditional testing methods can be challenging for small or delicate 3D printed elements.
  • Need for precise, non-contact measurement techniques in additive manufacturing.

Purpose of the Study:

  • To develop and validate an automated test stand for evaluating mechanical properties of 3D printed parts.
  • To investigate the use of contactless optical measurements for dynamic analysis.
  • To determine key material properties (density, elastic modulus, damping) of PLA.

Main Methods:

  • Construction of an automated test stand with optical measurement capabilities.
  • Implementation of a novel phase angle measurement using a single vibration sensor.
  • Development of numerical models and simulation of object oscillations.
  • Experimental analysis of 3D printed PLA elements with varying dimensions and frequencies.

Main Results:

  • The developed test stand enables accurate amplitude and phase angle measurements.
  • The contactless optical method is suitable for small and lightweight 3D printed elements.
  • Material properties such as density, elastic modulus, and damping of PLA were determined.
  • Analysis showed the influence of dimensions and vibration frequencies on mechanical properties.

Conclusions:

  • The automated test stand provides a reliable method for assessing mechanical properties of 3D printed materials.
  • The innovative phase angle measurement enhances synchronization and repeatability.
  • The study provides valuable data on PLA properties, aiding in material selection and design for 3D printed applications.