"Double-Double" layup thermoplastic laminates and their application potential in automotive structures

YANG Gang; SHEN Jian; ZHOU Zhengyang; LYU Hairu; LIU Renjie; ZHANG Qian; LIU Jialong; JIANG Dazhi

doi:10.13801/j.cnki.fhclxb.20240801.001

Volume 41 Issue 9

Sep. 2024

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Article Navigation > Acta Materiae Compositae Sinica > 2024 > 41(9): 4892-4904

YANG Gang, SHEN Jian, ZHOU Zhengyang, et al. 'Double-Double' layup thermoplastic laminates and their application potential in automotive structures[J]. Acta Materiae Compositae Sinica, 2024, 41(9): 4892-4904. doi: 10.13801/j.cnki.fhclxb.20240801.001

Citation:

YANG Gang, SHEN Jian, ZHOU Zhengyang, et al. "Double-Double" layup thermoplastic laminates and their application potential in automotive structures[J]. Acta Materiae Compositae Sinica, 2024, 41(9): 4892-4904. doi: 10.13801/j.cnki.fhclxb.20240801.001

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"Double-Double" layup thermoplastic laminates and their application potential in automotive structures

doi: 10.13801/j.cnki.fhclxb.20240801.001

School of Materials, Sun Yat-sen University, Shenzhen 518107, China

Funds: Research Fund for Foreign Scientists of the National Natural Science Foundation of China (52350410457)

Received Date: 2024-05-31
Accepted Date: 2024-07-20
Rev Recd Date: 2024-07-15

Available Online: 2024-08-01

Publish Date: 2024-09-15

Abstract

Abstract

The lightweight of automobile structures is an important way to reduce automobile energy consumption and increase cruising range. Although thermosetting matrix composites such as fiber reinforced epoxy have extremely high mechanical properties and lightweight potential, their applications in automotive structures are hindered by high manufacturing energy consumption, maintenance costs, and low design and manufacturing efficiency. A new type of "Double-Double" layup (DD) thermoplastic laminate ([±Ф/±Ψ]_n) is expected to solve the above problems. This paper analyzed the advantages of DD laminates compared to π/4 laminates (Quad) in lightweight design, and compared the mechanical properties and design analysis processes of laminates with different layup methods (DD, Woven, Quad layups) and different matrix materials (thermosetting epoxy resin, thermoplastic nylon 6). The results showed that the stiffness and strength of high axial stiffness DD laminates in the main load direction were much higher than those of Woven laminates with the same fiber and matrix. The stiffness performance of DD laminates was similar to that of Quad laminates with the same fiber and matrix, but the design efficiency of DD laminates was higher than that of Quad laminates. At the same time, research on DD thermoplastic laminates of carbon fiber reinforced nylon 6 composites (carbon/PA6) found that although the tensile modulus and tensile strength of unidirectional carbon/PA6 were lower than those of unidirectional carbon/epoxy, DD carbon/PA6 laminates could still be designed through the layup so that the stiffness and strength in the main load direction exceeded that of Woven carbon/epoxy laminates. Moreover, themoplastic carbon/PA6 has excellent repairability and recyclability, showing its advantages in automobile structural design.
- Double-Double,
- laminates,
- polymer-matrix composites,
- fiber,
- thermoplastic resin,
- automotive structure
Long Abstrsct
Innovation Points

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References(39)

References

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