The effects of processing parameters on fatigue lives of graphene oxide papers (GOP) and reduced GOP (RGOP) are investigated. The fabrication method could be either vacuum filtration or pressure filtration, and the important processing parameters include graphene weight fraction in suspension, sonication time for suspension and pressure value for pressure filtration. Fatigue performance of the papers are studied by strain‐controlled fatigue test. Under vacuum filtration method, fatigue lives of both GOP and RGOP decrease with increasing graphene weight fraction. The longest fatigue life is 403 284 cycles for the GOP under highest power sonication time and lowest graphene weight fraction. Fatigue lives of most GOP increase with increasing sonication time up to medium level. Under pressure filtration method, all GOP have shorter fatigue lives than those by vacuum filtration. Scanning electron microscopy is employed to carefully analyse the failed papers in order to clarify the fatigue failure mechanism.

中文翻译：

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不同工艺参数下制备的氧化石墨烯纸的疲劳分析

研究了工艺参数对氧化石墨烯纸（GOP）和还原GOP（RGOP）疲劳寿命的影响。制备方法可以是真空过滤或压力过滤，重要的工艺参数包括悬浮液中石墨烯的重量分数，悬浮液的超声处理时间和压力过滤的压力值。通过应变控制疲劳试验研究了纸的疲劳性能。在真空过滤方法下，GOP和RGOP的疲劳寿命都随着石墨烯重量分数的增加而降低。GOP在最高功率超声处理时间和最低石墨烯重量分数下的最长疲劳寿命为403 284个循环。大多数GOP的疲劳寿命会随着超声时间的增加而增加，直至达到中等水平。加压过滤法 与真空过滤相比，所有GOP的疲劳寿命都更短。为了阐明疲劳失效机理，采用扫描电子显微镜仔细分析了失效的论文。