Effect of hygrothermal environment on tensile and compressive properties of CCF800/epoxy scarf-repaired laminates

被引：0
|
作者：
Zhang J. [1 ,2 ]
Cheng X. [1 ]
Cheng Y. [1 ]
Feng Z. [3 ]
机构：
[1] School of Aeronautic Science and Engineering, Beihang University, Beijing
[2] Institute of Telecommunication Satellite, China Academy of Spacecraft Technology, Beijing
[3] The Airworthiness College, Civil Aviation University of China, Tianjin
来源：
Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics | 2020年 / 46卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Composite laminate; Compressive properties; Finite element modeling; Hygrothermal environment; Scarf repair; Tensile properties;
D O I：
10.13700/j.bh.1001-5965.2019.0416
中图分类号：
学科分类号：
摘要：
As the aircrafts after scarf repair may experience hygrothermal environment during its service, the effect of hygrothermal environment on tensile and compressive properties of scarf-repaired laminates was studied in this paper. The tensile and compressive properties of composite CCF800/epoxy scarf-repaired laminates in four hygrothermal environments were firstly tested. Then, corresponding finite element models of hygrothermal stress were established to explore structural hygrothermal stress distribution in different environments. Finally, the tensile and compressive property analysis models of scarf-repaired laminates in the hygrothermal environment were established to explore the effect of the hygrothermal environment on the mechanical properties of the scarf-repaired laminates. The experimental results show that the hygrothermal environment reduces the compressive bearing capacity of scarf-repaired laminates, but improves their tensile bearing capacity, which is inconsistent with the common sense. Through experimental observation and mechanism analysis, it was found that the fiber misalignment in CCF800/epoxy laminates is the main reason that the tensile properties of the scarf-repaired laminates do not decrease but rise in hygrothermal environment. Therefore, with hygrothermal environment considered, the problem of fiber misalignment needs to be paid special attention to in the production of CCF800 fiber composite materials. © 2020, Editorial Board of JBUAA. All right reserved.
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页码：1116 / 1124
页数：8
相关论文
共 26 条
  • [1] CHENG X Q, ZHANG J, BAO J W, Et al., Low-velocity impact performance and effect factor analysis of scarf-repaired composite laminates, International Journal of Impact Engineering, 111, pp. 85-93, (2018)
  • [2] DEMS K, RADASZEWSKA E, TURANT J., Modeling of fiber-reinforced composite material subjected to thermal load, Thermal Stresses, 35, 7, pp. 579-595, (2012)
  • [3] HAN K H, YU Y, WANG H., Effect of transient moisture distribution on composite bonded repair strength, 17th National Conference on Composite Materials, pp. 95-100, (2012)
  • [4] ZHAO C, CHEN Y L, LIU X., Research progress of interface of polymer matrix composites for aircraft in hot and humid environment, Equipment Environmental Engineering, 9, 5, pp. 62-66, (2012)
  • [5] ZHAN Q W, FAN X L, SUN Q., Effects of hygrothermal environment on static properties of laminated composites with a circular open hole, Journal of Solid Rocket Technology, 34, 6, pp. 764-767, (2011)
  • [6] XU J, KOLSTEIN H, BIJLAARD F S., Moisture diffusion in glass-fiber-reinforced polymer composite bridge under hot/wet environment, Composites Part B: Engineering, 45, 1, pp. 407-416, (2013)
  • [7] YAN W, YA Y, SU L., Damage analysis and strength prediction of composites structures in hygrothermal environment, Acta Materiae Compositae Sinica, 27, 2, pp. 113-116, (2010)
  • [8] LA SAPONARA V., Environmental and chemical degradation of carbon/epoxy and structural adhesive for aerospace applications: Fickian and anomalous diffusion, Arrhenius kinetics, Composite Structures, 93, 9, pp. 2180-2195, (2011)
  • [9] AOKI Y, YAMADA K, ISHIKAWA T., Effect of hygrothermal condition on compression after impact strength of CFRP laminates, Composites Science and Technology, 68, 6, pp. 1376-1383, (2008)
  • [10] LAL A, SINGH B N, ANAND S., Nonlinear bending response of laminated composite spherical shell panel with system randomness subjected to hygro-thermo-mechanical loading, International Journal of Mechanical Sciences, 53, 10, pp. 855-866, (2011)
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