High rate response of elastomeric coatings for wind turbine blade erosion protection evaluated through impact tests and numerical models

Autor: Kristine Munk Jespersen, Mohammadali Eftekhar, Nicolai Frost-Jensen Johansen, Jakob Ilsted Bech, Leon Mishnaevsky, Lars Pilgaard Mikkelsen

Publikováno v: Jespersen, K M, Eftekhar, M, Frost-Jensen Johansen, N, Bech, J I, Mishnaevsky Jr., L & Mikkelsen, L P 2023, ' High rate response of elastomeric coatings for wind turbine blade erosion protection evaluated through impact tests and numerical models ', International Journal of Impact Engineering, vol. 179, 104643 . https://doi.org/10.1016/j.ijimpeng.2023.104643

The high strain rate (above ~ 104/s) behavior of an elastomer is characterized using low strain rate (below ~ 101/s) dynamic mechanical thermal analysis and time–temperature superposition. This approach is validated using high strain rate ball impa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4176cd58f832c7b03a5c9cf85b226e0d
https://doi.org/10.1016/j.ijimpeng.2023.104643

Tunneling cracks in arbitrary oriented off-axis lamina

Autor: Lars Pilgaard Mikkelsen, Christian Frithiof Niordson, Bent F. Sørensen, Simon J. Klitgaard

Publikováno v: Mikkelsen, L P, Klitgaard, S J, Niordson, C F & Sørensen, B F 2020, ' Tunneling cracks in arbitrary oriented off-axis lamina ', International Journal of Fracture, vol. 226, pp. 161-179 . https://doi.org/10.1007/s10704-020-00485-9

The steady-state energy release rate for tunneling cracks under mixed-mode loading is determined using finite element analyses. The balanced and symmetric laminate layup $$[0/\theta /0/-\theta ]_s$$ is investigated, where the tunneling crack is locat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23cdf592c5da8fda626d32e4aef121f4
https://doi.org/10.1007/s10704-020-00485-9

Observation of the interaction between transverse cracking and fibre breaks in uni-directional non-crimp fabric composites subjected to cyclic bending fatigue damage mechanism

Autor: Ulrich Andreas Mortensen, Tom Løgstrup Andersen, Lars Pilgaard Mikkelsen

Publikováno v: Mortensen, U A, Mikkelsen, L P & Andersen, T L 2022, ' Observation of the interaction between transverse cracking and fibre breaks in uni-directional non-crimp fabric composites subjected to cyclic bending fatigue damage mechanism ', Journal of Composite Materials, vol. 56, no. 23, pp. 3511-3527 . https://doi.org/10.1177/00219983221115795

This work presents observations of fatigue damage in a quasi-unidirectional polymer reinforced composite made from basalt fibre non-crimp fabric and epoxy. Through observations over large areas, the study provides quantitative observations of the dam

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d00a3b31566b1947514e0e49e65934a5
https://orbit.dtu.dk/en/publications/5bd05180-60f1-425e-9fac-b61958d8458f

The influence of the fiber–matrix microstructure on the energy release rate of off-axis tunnel cracks in laminates

Autor: Brian Nyvang Legarth, Lars Pilgaard Mikkelsen, Leon Herrmann, Christian F. Niordson

Publikováno v: Herrmann, L, Mikkelsen, L P, Legarth, B N & Niordson, C F 2022, ' The influence of the fiber-matrix microstructure on the energy release rate of off-axis tunnel cracks in laminates ', Composites Part B: Engineering, vol. 247, 110338 . https://doi.org/10.1016/j.compositesb.2022.110338

Microstructural effects on the energy release rate and the mode mixity for tunneling cracks are investigated. A detailed microstructure is based on scanning electron microscopy of a real laminate. Based on a newly developed two-dimensional off-axis f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1073f00767a9f201c6c6b5d460d967a5
https://doi.org/10.1016/j.compositesb.2022.110338

Influence of in-plane shear on kink-plane orientation in a unidirectional fibre composite

Autor: Søren Fæster, Leif Asp, Lars Pilgaard Mikkelsen, Dennis Wilhelmsson

Publikováno v: Wilhelmsson, D, Mikkelsen, L P, Fæster, S & Asp, L E 2019, ' Influence of in-plane shear on kink-plane orientation in a unidirectional fibre composite ', Composites-Part A: Applied Science and Manufacturing, vol. 119, pp. 283-290 . https://doi.org/10.1016/j.compositesa.2019.01.018

Kink-band formation is the governing failure mechanism for compressive failure of fibre reinforced composites. Here, kink-plane orientation, describing the direction of kink-band formation, is studied using X-ray computed tomography (CT). Unnotched u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d979360155eb72b4150c8aa6b3e18ddb
https://doi.org/10.1016/j.compositesa.2019.01.018