Barely visible impact damage in scaled composite laminates: Experiments and numerical simulations

By X. C. Sun, S. Hallett. 2017

162 citations recorded by the source corpus.

Abstract This paper investigates the effect of size and complexity of composite structures on the formation of low-velocity impact damage via experimental tests and numerical modelling. The ASTM standard low-velocity impact test and a scaled-up version of the test were conducted. A novel numerical technique is presented that combines 3D solid and thin 2D shell elements for modelling different domains to achieve a high level of fidelity locally under the impact location, whilst achieving good computational efficiency for large structures. Together with the experimental studies at the different scales, the predictive capability of the numerical models was systematically validated. This modelling method demonstrated an advanced computational efficiency without compromising predictive accuracy. The models are applied to a case study of low-velocity impact of a large-scale stringer-stiffened panel, showing this modelling approach to be suitable for predicating low-velocity impact damage and structural response of laminated composites over a range of sizes and complexities.

View Paper: https://www.semanticscholar.org/paper/ff50e0313dcb50fc5842e047fb3b071a8340c6d4

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Citations in the corpus

Failure mechanisms and damage evolution of laminated composites under compression after impact (CAI): Experimental and numerical study (2018, methodology): “In [31], the level of indentation and low-velocity impact energies were set to be above delamination threshold but below back face fibre failure, using either analytical solutions or FE modelling [30,35].”
Barely visible impact damage assessment in laminated composites using acoustic emission (2018, methodology): “[6] used the X-ray Computed Tomography (CT) scanning and a 3D Finite Element (FE) model for the experimental and numerical detection of BVID in carbon/epoxy laminates, respectively.”