Advances in composite forming through 25 years of ESAFORM
status: published
In-situ synchrotron computed tomography tensile testing observations of the hybrid effect: A comparison with theory
status: published
Detailed experimental validation and benchmarking of six models for longitudinal tensile failure of unidirectional compo...
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status: published
Comparative study of ultrasonic techniques for reconstructing the multilayer structure of composites
The multilayer structure of fiber-reinforced polymers may be extracted by ultrasonic pulse-echo inspection. Depending on the employed ultrasonic frequency and subsequent processing methodology, different depth resolution and dynamic depth range can be achieved. This study compares the performance of different ultrasonic pulse-echo approaches for ex...
Mechanical behavior of basalt and glass textile composites at high strain rates : a comparison
The aim of this paper is to study and compare the mechanical behavior of woven basalt and woven glass epoxy composites at high strain rates, in order to assess the possibility of replacing glass fiber composites with basalt fiber composites for aircraft secondary structures, such as radomes, fairings, wing tips, etc. Both composites were produced u...
On the prediction of the bi-axial failure envelope of a UD CFRP composite lamina using computational micromechanics : ef...
A computational micromechanics based Finite Element (FE) analysis methodology is presented to predict the bi-axial failure envelope of a unidirectional (UD) carbon-epoxy composite ply. In order to estimate the effect of various microscale parameters that are influencing the macroscopic stress-strain behavior, under individual load cases, detailed n...
Predicting the adhesion strength of thermoplastic/glass interfaces from wetting measurements
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© 2018 Elsevier B.V. To evaluate compatibility between a substrate and a thermoplastic polymer, the established methodology is to estimate their surface composition in terms of surface energy components, utilizing the results of contact angle measurements of probe liquids onto substrate and polymer surfaces at room temperature. Using this methodolo...
Microstructural damage based micromechanics model to predict stiffness reduction in damaged unidirectional composites
Prediction of the residual stiffness of the carbon fiber reinforced polymer composite, subjected to fatigue loading, can be performed using some of the phenomenological models. However, it is still a challenge to find the stiffness based on the known microstructural damage state (that was developed irrespective of the load history). In this work, t...
Prediction of mechanical behavior of composites under high strain rate tensile loading
Non-standardization of specimen size and shape, complexities involved in specimen fabrication and its mounting on split Hopkinson pressure bar (SHPB) make it difficult to achieve reliable high strain rate mechanical properties under tensile loading experimentally. A formulation based on variable rate power law is proposed to predict the tensile str...
Predicting the non-linear mechanical response of triaxial braided composites
In this paper, the non-linear mechanical response of triaxial braided composites under multiple loading conditions was investigated with a meso-scale simulation strategy. Numerical predictions made by three-dimensional finite element unit cells with a realistic internal geometry in two nesting configurations correlated well with experimental stress...
