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  1. Article ; Online: In-Depth Analysis of the High Strain Rate Compressive Behavior of RTM6 Epoxy Using Digital Image Correlation.

    Elmahdy, Ahmed / Zotti, Aldobenedetto / Borriello, Anna / Zarrelli, Mauro / Verleysen, Patricia

    Polymers

    2022  Volume 14, Issue 9

    Abstract: The aim of this paper is to study the effect of strain rate on the compressive behavior of the highly cross-linked RTM6 epoxy resin used in advanced aerospace composites. Dynamic compression tests were performed using a split Hopkinson pressure bar, ... ...

    Abstract The aim of this paper is to study the effect of strain rate on the compressive behavior of the highly cross-linked RTM6 epoxy resin used in advanced aerospace composites. Dynamic compression tests were performed using a split Hopkinson pressure bar, along with reference quasi-static compression tests, to cover a strain rate range from 0.001 to 1035 s
    Language English
    Publishing date 2022-04-27
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym14091771
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Effect of Strain Rate and Silica Filler Content on the Compressive Behavior of RTM6 Epoxy-Based Nanocomposites.

    Elmahdy, Ahmed / Zotti, Aldobenedetto / Zuppolini, Simona / Zarrelli, Mauro / Borriello, Anna / Verleysen, Patricia

    Polymers

    2021  Volume 13, Issue 21

    Abstract: The aim of this paper is to investigate the effect of strain rate and filler content on the compressive behavior of the aeronautical grade RTM6 epoxy-based nanocomposites. Silica nanoparticles with different sizes, weight concentrations and surface ... ...

    Abstract The aim of this paper is to investigate the effect of strain rate and filler content on the compressive behavior of the aeronautical grade RTM6 epoxy-based nanocomposites. Silica nanoparticles with different sizes, weight concentrations and surface functionalization were used as fillers. Dynamic mechanical analysis was used to study the glass transition temperature and storage modulus of the nanocomposites. Using quasi-static and split Hopkinson bar tests, strain rates of 0.001 s
    Language English
    Publishing date 2021-10-28
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym13213735
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Aromatic Hyperbranched Polyester/RTM6 Epoxy Resin for EXTREME Dynamic Loading Aeronautical Applications.

    Zotti, Aldobenedetto / Elmahdy, Ahmed / Zuppolini, Simona / Borriello, Anna / Verleysen, Patricia / Zarrelli, Mauro

    Nanomaterials (Basel, Switzerland)

    2020  Volume 10, Issue 2

    Abstract: The effects of the addition of an aromatic hyperbranched polyester (AHBP) on thermal, mechanical, and fracture toughness properties of a thermosetting resin system were investigated. AHBP filler, synthesized by using a bulk poly-condensation reaction, ... ...

    Abstract The effects of the addition of an aromatic hyperbranched polyester (AHBP) on thermal, mechanical, and fracture toughness properties of a thermosetting resin system were investigated. AHBP filler, synthesized by using a bulk poly-condensation reaction, reveals a glassy state at room temperature. Indeed, according to differential scanning calorimetry measurements, the glass transition temperature (T
    Language English
    Publishing date 2020-01-22
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano10020188
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Analysis of ESAFORM 2021 cup drawing benchmark of an Al alloy, critical factors for accuracy and efficiency of FE simulations.

    Habraken, Anne Marie / Aksen, Toros Arda / Alves, José L / Amaral, Rui L / Betaieb, Ehssen / Chandola, Nitin / Corallo, Luca / Cruz, Daniel J / Duchêne, Laurent / Engel, Bernd / Esener, Emre / Firat, Mehmet / Frohn-Sörensen, Peter / Galán-López, Jesús / Ghiabakloo, Hadi / Kestens, Leo A I / Lian, Junhe / Lingam, Rakesh / Liu, Wencheng /
    Ma, Jun / Menezes, Luís F / Nguyen-Minh, Tuan / Miranda, Sara S / Neto, Diogo M / Pereira, André F G / Prates, Pedro A / Reuter, Jonas / Revil-Baudard, Benoit / Rojas-Ulloa, Carlos / Sener, Bora / Shen, Fuhui / Van Bael, Albert / Verleysen, Patricia / Barlat, Frederic / Cazacu, Oana / Kuwabara, Toshihiko / Lopes, Augusto / Oliveira, Marta C / Santos, Abel D / Vincze, Gabriela

    International journal of material forming

    2022  Volume 15, Issue 5, Page(s) 61

    Abstract: This article details the ESAFORM Benchmark 2021. The deep drawing cup of a 1 mm thick, AA 6016-T4 sheet with a strong cube texture was simulated by 11 teams relying on phenomenological or crystal plasticity approaches, using commercial or self-developed ... ...

    Abstract This article details the ESAFORM Benchmark 2021. The deep drawing cup of a 1 mm thick, AA 6016-T4 sheet with a strong cube texture was simulated by 11 teams relying on phenomenological or crystal plasticity approaches, using commercial or self-developed Finite Element (FE) codes, with solid, continuum or classical shell elements and different contact models. The material characterization (tensile tests, biaxial tensile tests, monotonic and reverse shear tests, EBSD measurements) and the cup forming steps were performed with care (redundancy of measurements). The Benchmark organizers identified some constitutive laws but each team could perform its own identification. The methodology to reach material data is systematically described as well as the final data set. The ability of the constitutive law and of the FE model to predict Lankford and yield stress in different directions is verified. Then, the simulation results such as the earing (number and average height and amplitude), the punch force evolution and thickness in the cup wall are evaluated and analysed. The CPU time, the manpower for each step as well as the required tests versus the final prediction accuracy of more than 20 FE simulations are commented. The article aims to guide students and engineers in their choice of a constitutive law (yield locus, hardening law or plasticity approach) and data set used in the identification, without neglecting the other FE features, such as software, explicit or implicit strategy, element type and contact model.
    Language English
    Publishing date 2022-07-15
    Publishing country France
    Document type Journal Article
    ZDB-ID 2423930-6
    ISSN 1960-6214 ; 1960-6206
    ISSN (online) 1960-6214
    ISSN 1960-6206
    DOI 10.1007/s12289-022-01672-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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