Simulation analysis and experimental study on fatigue characteristics of CFRP transmission shaft

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-05-17 DOI:10.1016/j.yofte.2025.104260

Guoping Ding , Wenchang Liu , Lu Chang

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引用次数: 0

Abstract

Carbon Fiber Reinforced Plastic (CFRP) is widely utilized in aerospace and various other industries due to its exceptional strength, high modulus, favorable fatigue characteristics, and corrosion resistance. CFRP transmission shafts play a vital role in ensuring the reliability and stability of the transmission system. However,Current research on fatigue damage and evolution mechanisms in these materials remains limited, with key challenges including overreliance on isolated analytical approaches, insufficient experimental verification, and a lack of comprehensive lifecycle health monitoring. To address these problems, this article presented a simulation analysis and experimental investigation into the fatigue life, residual torsional stiffness, and fatigue damage evolution process of CFRP transmission shafts. During the torsional fatigue experiments, Fiber Bragg Grating (FBG) sensors were employed to perform distributed measurements of the complex strain field within the CFRP transmission shaft. Additionally, ultrasonic scanning technology was utilized to conduct a fatigue analysis of the CFRP transmission shafts. The results show that the error in the limit torque between the simulation and experiment is 1.89%, and the average error in fatigue life is 9.59%. The small errors, along with the consistent residual torsional stiffness and damage evolution mechanisms, verify the effectiveness of the research method.The residual torsional stiffness curve can be employed to evaluate the fatigue life of CFRP transmission shafts.The strain variations captured by the FBG sensing network correspond with the fatigue damage evolution mechanisms of the CFRP transmission shaft, enabling an assessment of the internal fatigue damage state through the strain changes detected by the FBG sensing network.

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CFRP传动轴疲劳特性仿真分析与试验研究

碳纤维增强塑料（CFRP）由于其优异的强度、高模量、良好的疲劳特性和耐腐蚀性而广泛应用于航空航天和其他各种工业。碳纤维布传动轴对保证传动系统的可靠性和稳定性起着至关重要的作用。然而，目前对这些材料的疲劳损伤和演化机制的研究仍然有限，主要挑战包括过度依赖孤立的分析方法、实验验证不足以及缺乏全面的生命周期健康监测。针对这些问题，本文对CFRP传动轴的疲劳寿命、残余扭转刚度和疲劳损伤演化过程进行了仿真分析和实验研究。在扭转疲劳试验中，采用光纤光栅（FBG）传感器对CFRP传动轴内部的复杂应变场进行了分布式测量。此外，利用超声扫描技术对CFRP传动轴进行了疲劳分析。结果表明，仿真结果与实验结果的极限扭矩误差为1.89%，疲劳寿命的平均误差为9.59%。较小的误差以及一致的残余扭转刚度和损伤演化机制验证了研究方法的有效性。剩余扭转刚度曲线可用于评价CFRP传动轴的疲劳寿命。光纤光栅传感网络捕捉到的应变变化与CFRP传动轴的疲劳损伤演化机制相对应，可以通过光纤光栅传感网络检测到的应变变化来评估CFRP传动轴的内部疲劳损伤状态。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.