This dataset contains data showing the effect of thin-ply reinforcement units, interlocked with a tab-and-slit geometry, on the fracture toughness of CFRP laminates. This dataset forms an addition to the dataset previously published here: https://doi.org/10.5281/zenodo.1476886. The previous dataset contains toughness data for reinforcements with tabs at 45 degrees. This dataset contains toughness data for reinforcements with tabs at 0 degrees. The reinforcement concept was first presented at the 18th European Conference on Composite Materials (2018, Athens, Greece). More information on the concept can be found at: http://wwwf.imperial.ac.uk/aeronautics/research/pinholab/interlock-tabs/. Links to publications connected to this data will be added to the Zenoto meta-data as they are published. For the reinforcement concept, both mode I and mode II fracture toughnesses were measured. The mode I data was acquired using DCB specimens, and the mode II data was obtained from 4-point end notch flexure (4ENF) tests. Force, displacement, crack length, and strain energy release rate during the test are provided for all specimens.

J.A. Pascoe and S.T. Pinho are grateful for the funding received from the EPSRC under grant number EP/M002500/1. S. Pimenta acknowledges the royal Academy of Engineering for her Research Fellowship on "Multiscale discontinuous composites for large scale and sustainable structural applications" (2015-2019).

{"references": ["Pascoe, J. A., Pimenta, S., and Pinho, S.T. 2018. \"Interlocking Thin-Ply Reinforcements for the Improvement of CAI Strength,\" In: 18th European Conference on Composite Materials. Athens;"]}