Version 1
: Received: 3 May 2024 / Approved: 7 May 2024 / Online: 7 May 2024 (11:56:10 CEST)
How to cite:
Wong, C. N.; VYAS, A.; WONG, W. O.; Sun, R. Design of a Scratching Damper for Identification of Young’s Modulus and Hardness of Extruded Aluminum. Preprints2024, 2024050386. https://doi.org/10.20944/preprints202405.0386.v1
Wong, C. N.; VYAS, A.; WONG, W. O.; Sun, R. Design of a Scratching Damper for Identification of Young’s Modulus and Hardness of Extruded Aluminum. Preprints 2024, 2024050386. https://doi.org/10.20944/preprints202405.0386.v1
Wong, C. N.; VYAS, A.; WONG, W. O.; Sun, R. Design of a Scratching Damper for Identification of Young’s Modulus and Hardness of Extruded Aluminum. Preprints2024, 2024050386. https://doi.org/10.20944/preprints202405.0386.v1
APA Style
Wong, C. N., VYAS, A., WONG, W. O., & Sun, R. (2024). Design of a Scratching Damper for Identification of Young’s Modulus and Hardness of Extruded Aluminum. Preprints. https://doi.org/10.20944/preprints202405.0386.v1
Chicago/Turabian Style
Wong, C. N., Wai On WONG and Ruqi Sun. 2024 "Design of a Scratching Damper for Identification of Young’s Modulus and Hardness of Extruded Aluminum" Preprints. https://doi.org/10.20944/preprints202405.0386.v1
Abstract
A special vibration damper is proposed for material property identification through a scratching process on a vibrating object. This paper presents the design and working principle of a scratching damper based on a scratch test device. A non-contact electromagnetic shaker is used to generate the shaking force for the vibration of the tested object. The required pressure on the scratched material during the scratching process is generated by a compression spring and adjusted by changing the amount of compression of the spring. The proposed damper is designed and tested on extruded aluminum samples for the determination of its Young’s modulus and hardness and validated by using the standard test instruments. Observations of physical dimensions of the scratching tracks are determined by microscope and were utilized to compute the scratching energy factor. Load curves are obtained at different pressure of the scratching process. The hysteresis loop energy during the scratching process of the tested object is measured and used for the determination of material properties of the object. Furthermore, energy conservation law, scratch energy release rate and loop energy release rate are used to determine the Young’s modulus and hardness of the sample. The measurement accuracy of the modulus and hardness of the tested sample is evaluated. The proposed method of material testing has several advantages over the traditional methods such as low cost and high repeatability, and may be used as an alternative to the standard modulus and hardness testers.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
