Study on the mechanical properties of single lap joints of carbon fiber/hot stamped high strength steel plates

DOI

10.2991/978-94-6463-581-2_42How to use a DOI?

Keywords

High-strength steel; Composites; Adhesive-lap joints; Mechanical property testing; Lightweighting

Abstract

Automotive parts for lightweight requirements continue to rise, modern body lightweight materials are moving toward the trend of multiple materials composite use. Carbon fiber/hot stamped metal composite panels with lightweight and high strength, excellent corrosion resistance, fatigue resistance and other advantages have attracted wide attention. Gluing technology is an important joining technology, but the mechanical properties of carbon fiber/hot stamped metal sheet with glued single lap structure are still lack of effective research. Therefore, this study focuses on the effects of acrylate adhesive and polyurethane adhesive on the joints of dissimilar materials in terms of mechanical characteristics. Carbon fiber (CFRP) and hot stamped boron steel (22MnB5) are selected as the base material, and acrylate adhesive and polyurethane adhesive are used as the bonding agent to analyze the load displacement curves of the glued joints through shear experiments, and analyze the different mechanical performance of the glued joints by the three dimensions of shear strength, energy absorption, and stiffness of joints; observe the damage surface and the damage surface of the glued single lap joints. The mechanical properties were analyzed by three dimensions: shear strength, energy absorption and joint stiffness. The micro-morphology of the damaged surface was observed to analyze the effect of the two different adhesives on the joint structure. The results show that: the damage of acrylate adhesive in carbon fiber/hot stamped steel single-lap adhesive joint is CFRP interlayer damage; polyurethane adhesive in carbon fiber/hot stamped steel single-lap adhesive joint has cohesion damage and adhesive/steel interface damage; acrylate adhesive has a more positive effect on the improvement of the mechanical properties of carbon fiber/hot stamped steel single-lap adhesive joints.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Jiabei Chen
AU  - Bin Zhu
AU  - Yisheng Zhang
PY  - 2024
DA  - 2024/12/07
TI  - Study on the mechanical properties of single lap joints of carbon fiber/hot stamped high strength steel plates
BT  - Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
PB  - Atlantis Press
SP  - 341
EP  - 348
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-581-2_42
DO  - 10.2991/978-94-6463-581-2_42
ID  - Chen2024
ER  -