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A simplified inverse method for interlayer stiffness characterization in layered composites using bending tests.

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Τίτλος: A simplified inverse method for interlayer stiffness characterization in layered composites using bending tests.
Συγγραφείς: Liang, Lizheng1 (AUTHOR), Chen, Zixian2 (AUTHOR), Peng, Shenyou1 (AUTHOR) pengshenyou@hnu.edu.cn, Duan, Chuangchuang2 (AUTHOR) duanchuang@hqu.edu.cn
Πηγή: Composite Interfaces. Oct2026, Vol. 33 Issue 10, p2209-2225. 17p.
Θεματικοί όροι: *Bend testing, *Mathematical analysis, *Reverse engineering, *Stress-strain curves, *Contact mechanics, *Laminated materials, *Composite construction
Περίληψη: Interfacial properties critically govern the mechanical behavior of layered composite materials. Building upon an analytical model for the bending behavior of multilayer beams under static loads, this study develops a simplified inverse function to determine interlayer stiffness directly from force-deflection curves. After establishing and solving a general theoretical framework for predicting interlayer slip and bending deflection in multilayer beams, we propose a practical method to extract interlayer stiffness from simple bending tests. This function enables rapid experimental characterization of interfacial properties for both two-layer beams and multilayered beams with identical layers. The approach is validated using simply supported beams under common loading conditions, providing engineers with a direct tool for interfacial property measurement, which is crucial for design and quality control. The accuracy of the proposed fitting function is inherently linked to the structural configuration and material properties of the system. Detailed error analysis indicates that the method maintains high precision within a broad operational window, providing a quantitative guideline for assessing its suitability across various multi-layer composite systems and interfacial stiffness ranges. [ABSTRACT FROM AUTHOR]
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  Label: Title
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  Data: A simplified inverse method for interlayer stiffness characterization in layered composites using bending tests.
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  Data: <searchLink fieldCode="AR" term="%22Liang%2C+Lizheng%22">Liang, Lizheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Zixian%22">Chen, Zixian</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Peng%2C+Shenyou%22">Peng, Shenyou</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> pengshenyou@hnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Duan%2C+Chuangchuang%22">Duan, Chuangchuang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> duanchuang@hqu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Composite+Interfaces%22">Composite Interfaces</searchLink>. Oct2026, Vol. 33 Issue 10, p2209-2225. 17p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Bend+testing%22">Bend testing</searchLink><br />*<searchLink fieldCode="DE" term="%22Mathematical+analysis%22">Mathematical analysis</searchLink><br />*<searchLink fieldCode="DE" term="%22Reverse+engineering%22">Reverse engineering</searchLink><br />*<searchLink fieldCode="DE" term="%22Stress-strain+curves%22">Stress-strain curves</searchLink><br />*<searchLink fieldCode="DE" term="%22Contact+mechanics%22">Contact mechanics</searchLink><br />*<searchLink fieldCode="DE" term="%22Laminated+materials%22">Laminated materials</searchLink><br />*<searchLink fieldCode="DE" term="%22Composite+construction%22">Composite construction</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Interfacial properties critically govern the mechanical behavior of layered composite materials. Building upon an analytical model for the bending behavior of multilayer beams under static loads, this study develops a simplified inverse function to determine interlayer stiffness directly from force-deflection curves. After establishing and solving a general theoretical framework for predicting interlayer slip and bending deflection in multilayer beams, we propose a practical method to extract interlayer stiffness from simple bending tests. This function enables rapid experimental characterization of interfacial properties for both two-layer beams and multilayered beams with identical layers. The approach is validated using simply supported beams under common loading conditions, providing engineers with a direct tool for interfacial property measurement, which is crucial for design and quality control. The accuracy of the proposed fitting function is inherently linked to the structural configuration and material properties of the system. Detailed error analysis indicates that the method maintains high precision within a broad operational window, providing a quantitative guideline for assessing its suitability across various multi-layer composite systems and interfacial stiffness ranges. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1080/09276440.2026.2618300
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 17
        StartPage: 2209
    Subjects:
      – SubjectFull: Bend testing
        Type: general
      – SubjectFull: Mathematical analysis
        Type: general
      – SubjectFull: Reverse engineering
        Type: general
      – SubjectFull: Stress-strain curves
        Type: general
      – SubjectFull: Contact mechanics
        Type: general
      – SubjectFull: Laminated materials
        Type: general
      – SubjectFull: Composite construction
        Type: general
    Titles:
      – TitleFull: A simplified inverse method for interlayer stiffness characterization in layered composites using bending tests.
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            NameFull: Liang, Lizheng
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            NameFull: Chen, Zixian
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            NameFull: Peng, Shenyou
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            NameFull: Duan, Chuangchuang
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          Dates:
            – D: 01
              M: 10
              Text: Oct2026
              Type: published
              Y: 2026
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              Value: 09276440
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              Value: 33
            – Type: issue
              Value: 10
          Titles:
            – TitleFull: Composite Interfaces
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