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Mechanical Properties and Structure of Polymers and Polymer Composites

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Dr. Francisco Maciel Monticeli

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Department of Aerospace Structures and Materials, Faculty of Aerospace Engineering, Delft University of Technology, Delft, The Netherlands
Interests: composite materials; fatigue; fractography; Artificial Intelligence; crack propagation; process-property-structure
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Prof. Dr. Heitor Luiz Ornaghi Júnior

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Postgraduate Program in Process Technologies and Engineering (PGPROTEC), University of Caxias do Sul, Caxias do Sul CEP 95070-560, Brazil
Interests: structural composites; structure vs property relationship; creep; dynamic mechanical thermal analysis
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Dr. Luis Felipe Pupim dos Santos

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Instituto de Pesquisas Tecnológicas (IPT), Laboratório de Estruturas Leves (LEL), Departamento de Materiais Avançados, São José dos Campos, SP, Brasil
Interests: thermoplastic composite; thermal properties; nanostroctured composites; carbon nanotubes

Special Issue Information

Dear Colleagues,

This Special Issue "Mechanical Properties and Structure of Polymers and Polymer Composites" delves into the realm of advanced materials crucial to modern industrial applications. Polymers and polymer composites, extensively utilized across industries, offer a unique blend of versatility, durability, and design flexibility. This Special Issue spotlights the intersection of mechanical properties and structural composition, unraveling the intricate interplay between material behavior and processing techniques. Notably, the importance of process–structure–property performance demands an in-depth understanding of manufacturing variables connected to respective mechanical responses. Additionally, fractography and fracture mechanics unveil the complexities of failure mechanisms, guiding material enhancement and safety assurance. Furthermore, structural characterization techniques provide invaluable insights into micro–macro relationships, enhancing composite performance. To fully comprehend the impact of fractures on structural applications, a thorough analysis of their effects in static, fatigue, and creep phenomena is necessary. For that purpose, this Special Issue navigates the essential facets of polymers and polymer composites, catering to researchers and practitioners striving to unlock novel applications and elevate industrial standards.

Dr. Francisco Maciel Monticeli
Prof. Dr. Heitor Luiz Ornaghi Júnior
Dr. Luis Felipe Pupim dos Santos
Guest Editors

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Research

28 pages, 40866 KiB

Open AccessArticle

Characterization and Simulation of the Interface between a Continuous and Discontinuous Carbon Fiber Reinforced Thermoplastic by Using the Climbing Drum Peel Test Considering Humidity

by Nicolas Christ , Benedikt M. Scheuring , Christoph Schelleis , Wilfried V. Liebig , John Montesano, Kay A. Weidenmann and Jörg Hohe

Polymers 2024, 16(7), 976; https://doi.org/10.3390/polym16070976 - 3 Apr 2024

Cited by 1 | Viewed by 1096

Abstract

The objective of this paper is to investigate the debonding behavior of the interface between continuously and discontinuously fiber reinforced thermoplastics using the climbing drum peel test. The study emphasizes on the importance of considering different climatic boundary conditions on the properties of [...] Read more.

0 m . %

up to above

6 m . %

are prepared and tested. It is observed that an increase in moisture content from

0 m . %

2 m . %

results in an increase of the fracture surface energy from

1.07 \cdot 10^{3} J / m^{2}

2.40 \cdot 10^{3} J / m^{2}

required to separate the two materials, but a further increase in moisture to

6.35 m . %

conversely results in a subsequent decrease of the required energy to

1.91 \cdot 10^{3} J / m^{2}

. The study presents an explanatory model of increasing plasticization of the polymer due to increased polymer chain mobility, which results in more deformation energy being required to propagate the crack, which is corroborated in SEM investigations of the fracture surface. A further increase in humidity leads to polymer degradation due to hydrolysis, which explains the subsequent reduction of the fracture energy. The experimental set up is modeled numerically for the first time with cohesive surfaces, which could successfully reproduce the effective force-displacement curve in the experiment by varying the interface parameters in the model over an influence length, allowing the conclusion of a process induced variation in the interface properties over a specific consolidation length. Full article

(This article belongs to the Special Issue Mechanical Properties and Structure of Polymers and Polymer Composites)

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