ON THE EFFECTS OF THE INTERPHASE ON THE DAMPING OF CFRP STRUCTURES: AN EXPERIMENTAL INVESTIGATION

Mattia Gasenge

m.gasenge@studenti.unipi.it
Università di Pisa (Italy)
https://orcid.org/0009-0001-3012-7243

Paolo Sebastiano Valvo


Università di Pisa (Italy)
https://orcid.org/0000-0001-6439-1926

Laura Aliotta


Università di Pisa (Italy)
https://orcid.org/0000-0003-1876-5995

Andrea Lazzeri


Università di Pisa (Italy)
https://orcid.org/0000-0002-9463-1502

Abstract

The increased adoption of composite laminates in modern engineering requires advancement in the prediction of their dynamic behavior. Damping is a major design constraint in aerospace structures subjected to cyclic loads. While the effects caused by damping are well known, the mechanisms that cause it at the microscopic level are still unclear on a quantitative basis. Testing of these phenomena requires some difficulties to be overcome, like the contribution of spurious sources. The study focuses on the effects that the interphase has on the damping properties of carbon fiber-reinforced polymer (CFRP) composite structures. Three-phase models are employed to investigate the dependence of damping on the interphase mechanical properties, with a focus on the fiber-matrix interfacial shear strength. The experimental campaign confirms the attended results: in particular, a stronger interphase determines a lower damping of the structure.


Keywords:

Damping, Interphase, CFRP, Free Decay, Silanes

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Published
2024-06-18

Cited by

Gasenge, M., Valvo, P. S., Aliotta, L., & Lazzeri, A. (2024). ON THE EFFECTS OF THE INTERPHASE ON THE DAMPING OF CFRP STRUCTURES: AN EXPERIMENTAL INVESTIGATION. Journal of Technology and Exploitation in Mechanical Engineering, 10(1), 1–7. https://doi.org/10.35784/jteme.5630

Authors

Mattia Gasenge 
m.gasenge@studenti.unipi.it
Università di Pisa Italy
https://orcid.org/0009-0001-3012-7243

Authors

Paolo Sebastiano Valvo 

Università di Pisa Italy
https://orcid.org/0000-0001-6439-1926

Authors

Laura Aliotta 

Università di Pisa Italy
https://orcid.org/0000-0003-1876-5995

Authors

Andrea Lazzeri 

Università di Pisa Italy
https://orcid.org/0000-0002-9463-1502

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