X-ray microtomography analysis of the damage micromechanisms in 3D woven composites under low-velocity impact

By R. Seltzer, Carlos Gonz'alez, R. Muñoz, Javier Llorca, T. Blanco-Varela. 2013

160 citations recorded by the source corpus.

3D woven composites reinforced with either S2 glass, carbon or a hybrid combination of both and containing either polyethylene or carbon z-yarns were tested under low-velocity impact. Different impact energies (in the range of 21–316 J) were used and the mechanical response (in terms of the impact strength and energy dissipated) was compared with that measured in high-performance, albeit standard, 2D laminates. It was found that the impact strength in both 2D and 3D materials was mainly dependent on the in-plane fiber fracture. Conversely, the energy absorption capability was primarily influenced by the presence of z-yarns, having the 3D composites dissipated over twice the energy than the 2D laminates, irrespective of their individual characteristics (fiber type, compaction degree, porosity, etc.). X-ray microtomography revealed that this improvement was due to the z-yarns, which delayed delamination and maintained the structural integrity of the laminate, promoting energy dissipation by tow splitting, intensive fiber breakage under the tup and formation of a plug by out-of-plane shear.

Subfields: Mechanical Engineering, Mechanics of Materials, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/07076eaf46261968ba9af926580886858244a4f7

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Mechanical Engineering

1. L. Gorbatikh
2. Y. Swolfs
3. Nicola Maria Pugno
4. I. Verpoest

In Mechanics of Materials

1. M. Tripathi
2. A. Nikiforov
3. Shengnan Zhang
4. F. Awaja
5. L. Gorbatikh
6. Y. Swolfs
7. Nicola Maria Pugno
8. I. Verpoest

In Polymers and Plastics

1. L. Gorbatikh
2. Y. Swolfs
3. M. Tripathi
4. A. Nikiforov
5. Shengnan Zhang
6. Nicola Maria Pugno
7. F. Awaja
8. I. Verpoest

Citations in the corpus

• Recent advances in fibre-hybrid composites: materials selection, opportunities and applications (2019, background): “Fibre-hybrid composites are relatively common in 3D weaves [225,229,230,233], most likely due”
• Cracks, microcracks and fracture in polymer structures: Formation, detection, autonomic repair (2016, methodology): “resin cracking 5–10 lm Quantitative micro-mechanism of impact damage was studies [364]”