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Mechanical Properties and Fatigue Behavior of Composite Materials
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Mechanical Properties and Fatigue Behavior of Composite Materials

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (20 June 2024) | Viewed by 3196

Special Issue Editors

Dr. Silvia Barbi

E-Mail Website
Guest Editor
Department of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, 42122 Reggio Emilia, Italy
Interests: material characterization; composite materials; materials processing; bioplastics; mechanical properties; composites
Dr. Monia Montorsi

E-Mail Website
Guest Editor
Department of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, 42122 Reggio Emilia, Italy
Interests: computational methods; materials science; composites; bioplastic; statistics; optimization; smart industry; textiles

Special Issue Information

Dear Colleagues,

Composites are a class of materials widely used in various manufacturing sectors (e.g., automotive, energy storage, health, buildings, textile and agri-food) for customized applications. Nowadays, process technologies related to Industry 4.0 require an increasing knowledge of the properties of these materials and, in particular, of the correlation among the mechanical and fatigue behaviors of materials with their formulation. In fact, thanks to this material's knowledge, it is possible to implement effective corrective systems or easily implement new products with the aim of meeting, in the fastest way possible, new requirements. Therefore, this Special Issue is intended for the presentation of new ideas and experimental results that concern systematic investigations of the mechanical and fatigue properties of composite materials, carried out through mathematical, statistical, and/or simulation approaches.

Areas of interest are related, but not limited to: traditional polymeric-based composites for automotive or sports, metallic and ceramic-based composites for high temperature applications and/or high chemical resistance, and bio-based or natural composites functionalized for agri-food, medical or textile applications in which mechanical or fatigue properties are relevant.

Dr. Silvia Barbi
Dr. Monia Montorsi
Guest Editors

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Keywords

  • smart manufacturing
  • CAD
  • composites properties modelling
  • computational methods
  • statistics
  • design of experiments
  • Industry 4.0
  • mechanical properties
  • processing optimization
  • reinforced materials

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Published Papers (3 papers)

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Research

20 pages, 9967 KiB  
Article
Comprehensive Study on the Properties of AZ91/x-Si3N4 Composites for Their Prospective Application
by Md Tanwir Alam, Tarique Ahmad, Abdulnaser M. Alshoaibi, Abdul Aziz, Dilawar Husain and Shameem Ahmad
Appl. Sci. 2024, 14(11), 4444; https://doi.org/10.3390/app14114444 - 23 May 2024
Cited by 3 | Viewed by 745
Abstract
Metal alloy matrix composites are generally lightweight structural materials with a high strength-to-weight ratio. They can be extensively used in various fields of modern engineering applications, such as aerospace and automotive components and biomedical engineering. This study focuses on the development and characterization [...] Read more.
Metal alloy matrix composites are generally lightweight structural materials with a high strength-to-weight ratio. They can be extensively used in various fields of modern engineering applications, such as aerospace and automotive components and biomedical engineering. This study focuses on the development and characterization of lightweight metal alloy matrix composites for industrial applications, with a particular emphasis on magnesium (Mg) alloys as a replacement for aluminum-based alloys. Mg alloys offer significant weight advantages, being 33% lighter than aluminum and 75% lighter than steel, making them highly desirable for use in various engineering fields. In the present study, Mg (AZ91) alloy reinforced with x-Si3N4 composites (x = 0, 1, 3, 5, 7, 9 wt.%) were fabricated using a liquid state process. The AZ91/x-Si3N4 composites were evaluated through physical, mechanical, wear, and microstructural characterization. The experimental results, supported by statistical analysis, demonstrated that the incorporation of Si3N4 particles amplified the mechanical properties, wear resistance, and porosity of the composites. However, the presence of the reinforced particles resulted in reduced forgeability and elongation, limiting certain deformation characteristics. The existence of the reinforced particles within the composites was confirmed through SEM analysis, providing visual evidence of their distribution and interaction within the Mg alloy matrix. Finally, it was concluded that the implication of the study could be sought for the light structural parts of aerospace, automotive, biomedical, and prosthetic applications. Full article
(This article belongs to the Special Issue Mechanical Properties and Fatigue Behavior of Composite Materials)
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11 pages, 1574 KiB  
Article
A Statistical Mesoscale Approach to Model the Size Effect on the Tensile Strength of Notched Woven Composites
by Andrea Ferrarese, Carlo Boursier Niutta, Alberto Ciampaglia and Davide Salvatore Paolino
Appl. Sci. 2024, 14(8), 3467; https://doi.org/10.3390/app14083467 - 19 Apr 2024
Cited by 2 | Viewed by 968
Abstract
The scaling of the strength of composite parts with part size is referred to as the size effect. In the presence of notches, stress concentration affects a portion of material that increases with the notch size. Furthermore, in woven composites, the notch and [...] Read more.
The scaling of the strength of composite parts with part size is referred to as the size effect. In the presence of notches, stress concentration affects a portion of material that increases with the notch size. Furthermore, in woven composites, the notch and tow size can be comparable, thus demanding a mesoscale approach to properly capture the stress intensification. In this paper, a probabilistic mesoscale method to model the size effect in notched woven composites is presented. First, the stress distribution is estimated with a finite element model, calibrated on experimental Digital Image Correlation data. The FE model simulates the mesoscale heterogeneity of the woven reinforced material and replicates the local stress intensification at the tow level. Then, a three-parameter Weibull-based statistical model is introduced to model the probability of failure from the calculated stress distribution and the volume of the part. An equivalent stress is used to capture the relevant fiber and matrix failure modes and the maximum value within the specimen volume is the random variable of the model. The method is applied to open-hole tension tests of a woven twill carbon fiber–epoxy composite. Two specimen widths and three width-to-diameter ratios, from 3 to 12, are considered. Specimen width produced an observable size effect, whereas the variation of hole size in the range considered did not. The statistical model is found to accurately describe the experimental observations, efficiently replicating an inverse size effect, regardless of hole size, while wider specimens lead to a lower probability of failure. Full article
(This article belongs to the Special Issue Mechanical Properties and Fatigue Behavior of Composite Materials)
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13 pages, 6203 KiB  
Article
Verification of a Simplified Design Method for Timber–Concrete Composite Structures with Metal Web Timber Joists
by Agris Rogainis, Dmitrijs Serdjuks, Karina Buka-Vaivade, Pavel Akishin, Genadijs Sahmenko, Elza Briuka and Vjaceslavs Lapkovskis
Appl. Sci. 2024, 14(4), 1457; https://doi.org/10.3390/app14041457 - 10 Feb 2024
Cited by 1 | Viewed by 1043
Abstract
This study presents a comprehensive analysis of a simplified design methodology for timber–concrete composite roof and floor structures employing metal web beams, also known as posi-joisted beams, easi-joist, or open web joists, validated through both laboratory experiments and finite element (FE) method analyses. [...] Read more.
This study presents a comprehensive analysis of a simplified design methodology for timber–concrete composite roof and floor structures employing metal web beams, also known as posi-joisted beams, easi-joist, or open web joists, validated through both laboratory experiments and finite element (FE) method analyses. The proposed method integrates the transformed section method and the γ-method, as outlined in Annex B of EN1995-1-1 for mechanically jointed beams. The investigation focuses on roof and floor structures featuring posi-joisted beams, oriented strand board (OSB) sheets connected by screws, and a layer of concrete bonded to the OSB sheets using epoxy glue and granite chips. Two groups, each consisting of four specimens, were prepared for the laboratory experiments. Each specimen comprised two posi-joisted beams, 1390 mm long, connected by OSB/3 boards measuring 400 mm in width and 18 mm in thickness. The beams had a cross-sectional depth of 253 mm, corresponding to beams of grade PS10, with top and bottom chords made from solid timber (95 mm × 65 mm). Bracing members with cross-sections of 100 mm × 45 mm were used to join the bottom chords of the beams. A layer of self-levelling mass SakretBAM, 50 mm thick, was bonded to the OSB/3 boards using SicaDur 31 epoxy glue and granite chips (16–32 mm). The specimens underwent three-point bending tests under static loads, and FE modelling, conducted using Ansys R2 2022 software, was employed for both experimental groups. A comparative analysis of results obtained from the simplified design method, FE simulations, and experimental data revealed that the simplified method accurately predicted maximum vertical displacements of the roof fragment, including posi-joisted beams, with precision up to 11.6% and 23.10% in the presence and absence of a concrete layer, respectively. The deviation between normal stresses in the chords of the beams obtained through the simplified method and FE modelling was found to be 7.69%. These findings demonstrate the effectiveness and reliability of the proposed design methodology for timber–concrete composite roofs with posi-joisted beams. Full article
(This article belongs to the Special Issue Mechanical Properties and Fatigue Behavior of Composite Materials)
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