Effect of Loading Frequency on the High Cycle Fatigue Strength of Flax Fiber Reinforced Polymer Matrix Composites
作者机构：Department of Mechanical EngineeringNorth Dakota State UniversityFargoUSA
出 版 物：《Journal of Renewable Materials》 (可再生材料杂志（英文）)
年 卷 期：2022年第10卷第5期
页 面：1185-1200页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：This work was supported by the NSF ND EPSCoR[Award#IIA-1355466]
主 题：Fiber reinforced material fatigue limit fatigue modelling loading frequency life prediction
摘 要：Among natural fibers,flax fiber reinforced polymer matrix composites show excellent dynamic/fatigue properties due to its excellent damping *** about fatigue limit and effect of loading frequency on fatigue limit is very crucial to know before being used a member as a structural *** limit of fiber reinforced composite is measured through high cycle fatigue strength(HCFS).The effect of loading frequency on the HCFS of flax fiber reinforced polymer matrix composites was investigated using stabilized specimen surface temperature based thermographic and dissipated energy per cycle-based *** of unidirectional flax fiber reinforced thermoset composites were tested under cyclic loading at different percentages of applied stresses for the loading frequencies of 5,7,10,and 15 Hz in order to determine the stabilized surface temperature of the specimen and dissipated energy per fatigue *** approaches predicted similar fatigue limits(HCFS)which showed a good agreement with experimental results from *** of flax fiber reinforced composites decrease little with increasing loading ***,effect of loading frequency on stabilized specimen temperature and dissipated energy per fatigue cycle was also *** specimen surface temperature increases with loading frequency,dissipated energy per-cycle does not change with loading *** degradation at higher loading frequencies may play a significant role in decreasing HCFS with increasing loading frequency.
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