The Influence of Long Term Thermal and Mechanical Loads on the Young's Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors

K. Bünting, A.R. Shukla, J. Song, The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors, IEEE, [Piscataway, NJ], 2024.

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Konferenzband - Beitrag | Veröffentlicht | Englisch
Körperschaftlicher Herausgeber
Institute of Electrical and Electronics Engineers; IEEE Electronics Packaging Society
Abstract
Copper alloy metal strips are widely used to manufacture electrical connectors. These connectors experience stress relaxation during operation. The reduced contact force may lead to contact failure. For the given design of connectors, the contact force is proportional to the Young's modulus which depends on interatomic bonds, alloying elements and the microstructure of metal grains. According to the literature, it is assumed that Young's modulus does not change significantly during long-term mechanical stress and aging at temperatures below the recrystallization temperature of copper alloys. Based on this assumption, the relaxation of connectors from lifetime tests and from long-term used field vehicles can be determined by the comparison of spring deflection of connectors before and after long-term tests or long-term use. The focus of this paper is to answer the question, whether this assumption is accurate. For this purpose, the influence of long-term thermal and mechanical loads on the Young's modulus of various copper alloys is investigated. The temperature in test approximately matches the maximum design temperature of automotive connectors and the mechanical stress is comparable to that in a typical connector.
Erscheinungsjahr
Titel Konferenzband
Electrical contacts - 2024 : proceedings of the Sixty‐Ninth IEEE Holm Conference on Electrical Contacts : 6-10 October 2024, Annapolis, MD, USA
Konferenz
69th Holm Conference on Electrical Contacts (HOLM)
Konferenzort
Annapolis, MD, USA
Konferenzdatum
2024-10-06 – 2024-10-10
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Bünting K, Shukla AR, Song J. The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors. (Institute of Electrical and Electronics Engineers, IEEE Electronics Packaging Society , eds.). IEEE; 2024. doi:10.1109/holm56222.2024.10768449
Bünting, K., Shukla, A. R., & Song, J. (2024). The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors. In Institute of Electrical and Electronics Engineers & IEEE Electronics Packaging Society (Eds.),   Electrical contacts - 2024 : proceedings of the Sixty‐Ninth IEEE Holm Conference on Electrical Contacts : 6-10 October 2024, Annapolis, MD, USA . IEEE. https://doi.org/10.1109/holm56222.2024.10768449
Bünting K, Shukla AR and Song J (2024) The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors, Institute of Electrical and Electronics Engineers and IEEE Electronics Packaging Society (eds). [Piscataway, NJ]: IEEE.
Bünting, Karolin, Abhay Rammurti Shukla, and Jian Song. The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors. Edited by Institute of Electrical and Electronics Engineers and IEEE Electronics Packaging Society .   Electrical Contacts - 2024 : Proceedings of the Sixty‐Ninth IEEE Holm Conference on Electrical Contacts : 6-10 October 2024, Annapolis, MD, USA . [Piscataway, NJ]: IEEE, 2024. https://doi.org/10.1109/holm56222.2024.10768449.
Bünting, Karolin, Abhay Rammurti Shukla und Jian Song. 2024. The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors. Hg. von Institute of Electrical and Electronics Engineers und IEEE Electronics Packaging Society .   Electrical contacts - 2024 : proceedings of the Sixty‐Ninth IEEE Holm Conference on Electrical Contacts : 6-10 October 2024, Annapolis, MD, USA . [Piscataway, NJ]: IEEE. doi:10.1109/holm56222.2024.10768449, .
Bünting, Karolin ; Shukla, Abhay Rammurti ; Song, Jian ; Institute of Electrical and Electronics Engineers ; IEEE Electronics Packaging Society (Hrsg.): The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors. [Piscataway, NJ] : IEEE, 2024
K. Bünting, A.R. Shukla, J. Song, The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors, IEEE, [Piscataway, NJ], 2024.
K. Bünting, A. R. Shukla, and J. Song, The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors. [Piscataway, NJ]: IEEE, 2024. doi: 10.1109/holm56222.2024.10768449.
Bünting, Karolin, et al. “The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors.”   Electrical Contacts - 2024 : Proceedings of the Sixty‐Ninth IEEE Holm Conference on Electrical Contacts : 6-10 October 2024, Annapolis, MD, USA , edited by Institute of Electrical and Electronics Engineers and IEEE Electronics Packaging Society , IEEE, 2024, https://doi.org/10.1109/holm56222.2024.10768449.
Bünting, Karolin/Shukla, Abhay Rammurti/Song, Jian: The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors, hg. von Institute of Electrical and Electronics Engineers, IEEE Electronics Packaging Society , [Piscataway, NJ] 2024.
Bünting K, Shukla AR, Song J. The Influence of Long Term Thermal and Mechanical Loads on the Young’s Modulus of Cu-Alloys - Determination of Stress Relaxation in Electrical Connectors. Institute of Electrical and Electronics Engineers, IEEE Electronics Packaging Society , editors.   Electrical contacts - 2024 : proceedings of the Sixty‐Ninth IEEE Holm Conference on Electrical Contacts : 6-10 October 2024, Annapolis, MD, USA . [Piscataway, NJ]: IEEE; 2024.

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