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Title: Experimental and computational analysis of failure mechanisms in unidirectional carbon fiber reinforced polymer laminates under longitudinal compression loading

Abstract

Here, his study investigates the failure mechanisms of notched unidirectional (UD) carbon fiber reinforced polymer (CFRP) laminates subjected to longitudinal compressive loading. A sequence of failure initiation and propagation is observed based on optical microscopy images of specimens during failure. The micrographs reveal that the main failure mechanism in UD laminates is fiber kinking failure. The influence of manufacturing defects and voids on fiber kinking mechanisms is also analyzed. The results show that the voids in the resin-rich area lead to kink-band splitting, while in some cases the voids cause the kink-band to deflect in a new direction depending on the location of the voids. The next focus of this study is to propose a computational micromechanics model considering local fiber waviness to study the fiber kinking failure mechanism. The computational results on kink-band formation and stress-strain response show good consistency with our experimental analysis. Lastly, the failure envelopes of σ11-σ22 and σ11-τ12 subjected to combined loading conditions are obtained from the computational model, which provide essential inputs for future theoretical failure criteria.

Authors:
 [1];  [1];  [2];  [3];  [4];  [5];  [3];  [6]
+ Show Author Affiliations
  1. Nanjing University of Aeronautics and Astronautics (China)
  2. The Ohio State Univ., Columbus, OH (United States); Ford Motor Company, Dearborn, MI (United States)
  3. Northwestern Univ., Evanston, IL (United States)
  4. Chongqing University (China)
  5. Univ. of Michigan, Dearborn, MI (United States)
  6. Ford Motor Company, Dearborn, MI (United States)
Publication Date:
Research Org.:
Ford Motor Company, Detroit, MI (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1504738
Alternate Identifier(s):
OSTI ID: 1548128
Grant/Contract Number:  
EE0006867
Resource Type:
Accepted Manuscript
Journal Name:
Composite Structures
Additional Journal Information:
Journal Volume: 203; Journal Issue: C; Journal ID: ISSN 0263-8223
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 36 MATERIALS SCIENCE; Carbon fiber reinforced polymer laminate; Fiber waviness; Compressive failure; Fiber kinking; Manufacturing defects; Computational model; Failure envelope

Citation Formats

Sun, Qingping, Guo, Haiding, Zhou, Guowei, Meng, Zhaoxu, Chen, Zhangxing, Kang, Hongtae, Keten, Sinan, and Su, Xuming. Experimental and computational analysis of failure mechanisms in unidirectional carbon fiber reinforced polymer laminates under longitudinal compression loading. United States: N. p., 2018. Web. doi:10.1016/j.compstruct.2018.06.028.
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Sun, Qingping, Guo, Haiding, Zhou, Guowei, Meng, Zhaoxu, Chen, Zhangxing, Kang, Hongtae, Keten, Sinan, & Su, Xuming. Experimental and computational analysis of failure mechanisms in unidirectional carbon fiber reinforced polymer laminates under longitudinal compression loading. United States. https://doi.org/10.1016/j.compstruct.2018.06.028
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Sun, Qingping, Guo, Haiding, Zhou, Guowei, Meng, Zhaoxu, Chen, Zhangxing, Kang, Hongtae, Keten, Sinan, and Su, Xuming. Fri . "Experimental and computational analysis of failure mechanisms in unidirectional carbon fiber reinforced polymer laminates under longitudinal compression loading". United States. https://doi.org/10.1016/j.compstruct.2018.06.028. https://www.osti.gov/servlets/purl/1504738.
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@article{osti_1504738,
title = {Experimental and computational analysis of failure mechanisms in unidirectional carbon fiber reinforced polymer laminates under longitudinal compression loading},
author = {Sun, Qingping and Guo, Haiding and Zhou, Guowei and Meng, Zhaoxu and Chen, Zhangxing and Kang, Hongtae and Keten, Sinan and Su, Xuming},
abstractNote = {Here, his study investigates the failure mechanisms of notched unidirectional (UD) carbon fiber reinforced polymer (CFRP) laminates subjected to longitudinal compressive loading. A sequence of failure initiation and propagation is observed based on optical microscopy images of specimens during failure. The micrographs reveal that the main failure mechanism in UD laminates is fiber kinking failure. The influence of manufacturing defects and voids on fiber kinking mechanisms is also analyzed. The results show that the voids in the resin-rich area lead to kink-band splitting, while in some cases the voids cause the kink-band to deflect in a new direction depending on the location of the voids. The next focus of this study is to propose a computational micromechanics model considering local fiber waviness to study the fiber kinking failure mechanism. The computational results on kink-band formation and stress-strain response show good consistency with our experimental analysis. Lastly, the failure envelopes of σ11-σ22 and σ11-τ12 subjected to combined loading conditions are obtained from the computational model, which provide essential inputs for future theoretical failure criteria.},
doi = {10.1016/j.compstruct.2018.06.028},
journal = {Composite Structures},
number = C,
volume = 203,
place = {United States},
year = {Fri Jun 15 00:00:00 EDT 2018},
month = {Fri Jun 15 00:00:00 EDT 2018}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.compstruct.2018.06.028
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Cited by: 40 works
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Figures / Tables:

Figure 1 Figure 1: Wyoming Combined Loading Compression (CLC) test fixture and the geometry of the specimen (unit: mm).
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Works referenced in this record:

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journal, July 2008

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    Works referencing / citing this record:

    Comparison of Analytical Approaches Predicting the Compressive Strength of Fibre Reinforced Polymers
    journal, December 2018

    • Leopold, Christian; Harder, Sergej; Philipkowski, Timo
    • Materials, Vol. 11, Issue 12
    • DOI: 10.3390/ma11122517
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      Figures / Tables found in this record:

      Figure 1 (p. 7)figure
      Figure 2 (p. 7)figure
      Figure 3 (p. 8)figure
      Table 1 (p. 8)table
      Figure 4 (p. 10)figure
      Figure 5 (p. 11)figure
      Figure 6 (p. 12)figure
      Figure 7 (p. 13)figure
      Figure 8 (p. 15)figure
      Table 2 (p. 15)table
      Figure 9 (p. 16)figure
      Table 3 (p. 19)table
      Figure 10 (p. 20)figure
      Figure 11 (p. 21)figure
      Figure 12 (p. 22)figure
      Table 4 (p. 22)table
      Figure 13 (p. 23)figure
      Figure 14 (p. 25)figure
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