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    In situ micro-scale high-speed imaging for evaluation of fracture propagation and fracture toughness of thermoplastic laminates subjected to impact

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    Type
    Article
    Authors
    Wafai, Husam cc
    Yudhanto, Arief cc
    Lubineau, Gilles cc
    Mulle, Matthieu
    Alghamdi, T.
    Thoroddsen, Sigurdur T cc
    Yaldiz, R.
    Verghese, N.
    KAUST Department
    Composite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
    High-Speed Fluids Imaging Laboratory
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    BAS/1/1315-01-01
    Date
    2018-12-04
    Online Publication Date
    2018-12-04
    Print Publication Date
    2019-02
    Permanent link to this record
    http://hdl.handle.net/10754/630696
    
    Metadata
    Show full item record
    Abstract
    Measuring parameters related to each damage mode of composites subjected to impact is very challenging because of the complex damage phenomenology. Here, we developed an experimental methodology for evaluating the micro-scale fracture characteristics of two principal damage modes, i.e., transverse crack and delamination, and providing the corresponding fracture toughness. We demonstrated the capability of the method by comparing and providing additional insights about two materials, namely homopolymer-based (ductile) and copolymer-based (less-ductile) glass/polypropylene thermoplastic composites. We found that (i) transverse crack behavior of both composites is similar as indicated by a small difference in their fracture toughness, (ii) delamination growth in copolymer-based composites is slower than in homopolymer-based composites, (iii) the fibrillation induced by rubber particles in copolymer-based composites is responsible for decelerating the delamination growth and improving its fracture toughness during delamination. This method is deemed useful and quick for determining the micro-scale fracture behavior of composite laminates under impact in order to support the material selection process.
    Citation
    Wafai H, Yudhanto A, Lubineau G, Mulle M, Alghamdi T, et al. (2019) In situ micro-scale high-speed imaging for evaluation of fracture propagation and fracture toughness of thermoplastic laminates subjected to impact. Composite Structures 210: 747–754. Available: http://dx.doi.org/10.1016/j.compstruct.2018.11.092.
    Sponsors
    The authors would like to thank the Saudi Basic Industries Corporation (SABIC) under Grant Agreement number RGC/3/2050-01-01, and King Abdullah University of Science and Technology (KAUST) Baseline Research Funds under award number BAS/1/1315-01-01. We would also like to thank Dr. Thibault Guiberti (Clean Combustion Research Center, KAUST) for assisting with the force measurement system, and Dr. Rudy Deblieck (SABIC T&I Polymers STC, Geleen, The Netherlands) for sharing his expertise on polypropylene behavior.
    Publisher
    Elsevier BV
    Journal
    Composite Structures
    DOI
    10.1016/j.compstruct.2018.11.092
    Additional Links
    https://www.sciencedirect.com/science/article/pii/S0263822318336444
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.compstruct.2018.11.092
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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