Publications

This work is a part of a larger research effort to better understand the combined effect of the blast wave and fragment impacts following the detonation of a shrapnel bomb. It is known that the time interval ∆t, which represents the difference in arrival time between the blast wave front and the fragment at the position of a given target object, has a significant influence on its response mode. This paper presents insights into the establishment ...

The inherent anisotropy of composites complicates their damage response. The influence of multiaxiality is not thoroughly understood due to obstacles related to damage monitoring during loading. In this study, the response of carbon/epoxy laminates under fatigue is examined through in-situ microscopic observations. [0o/θ]2s, [0o/θ/0ο/-θ]s and [0o/θ/-θ]2s laminates with two off-axis angles, namely 30 and 60 degrees, are tested under fatigue. By ...

As one of the primary load-carrying materials, adhesives play a crucial role in the structural integrity of composite-made wind turbine blades. A thorough understanding of the mechanical behavior of adhesives in terms of fracture behavior is mandatory in order to optimize the blade design. Fracture analysis of trailing edge failure revealed that mode III contributed the most to the strain energy release rate, with flapwise shear and torsion ...

Designing a production process such as thermoforming for thermoplastic composites might be challenging as it requires material characteristics at high temperatures. Material characterization tests (e.g., bias extension) in the molten state can encounter several difficulties, one of the most important ones is maintaining a uniform temperature distribution on the sample. Accordingly, during this research, a set of thermal tests has been initially ...

In fracture tests, the sharpness of the pre-crack is highly important and can affect the test results considerably. Although lots of studies have been done regarding the investigation of the effects of different crack sharpening methods on the results of mode I fracture tests, to the best of the authors’ knowledge, not many experimental studies are available for the case of polymer materials under mode II loading. Accordingly, in this study, an ...

Recently, poly(nonamethylene terephthalate) (PAT(n=9)) and poly(decamethylene terephthalate) (PAT(n=10))
gained increasing interest since it was reported to exhibit enhanced endothelial cell adhesion and viability
compared to other poly(alkylene terephthalate) (PAT) analogues. Enhanced endothelial cell interactivity is of
particular interest when targeting cardiovascular applications, more specifically, for creating synthetic ...

The production of plastic has grown exponentially over the past few decades and with it the amount of plastic waste leaking in the environment, where it fragments into micro- and nanoplastics. This problematic situation stresses the need for increased plastic collection, recycling and reuse rates. Extrusion-based additive manufacturing (AM) and especially fused filament fabrication (FFF) offer an efficient and effective method to reuse and ...

The inherent anisotropy of composites complicates their damage response. The influence of multiaxiality, particularly in carbon-based composites, is not thoroughly understood due to obstacles related to damage monitoring during loading. In this study, the response of different carbon/epoxy laminates under fatigue is examined through dedicated in situ microscopic observations. By varying the orientation of off-axis layers, the impact of ...

Additively manufactured parts of thermoplastic materials using the Fused Filament Fabrication (FFF) technique
express transversely isotropic characteristics. Those characteristics are related to the FFF technique which leads
to the formation of particular bonds and voids between printed filaments, both of which are investigated in this
study. Tensile testing of printed Nylon samples reveals that the transverse isotropy can be ...