The effect of ply blocking on near-edge impact damage mechanisms

S. Hua; N. Dubary; C. Bouvet; A. T. Rhead

The effect of ply blocking on near-edge impact damage mechanisms

S. Hua, N. Dubary, C. Bouvet, A. T. Rhead

Research output: Contribution to conference › Paper › peer-review

Abstract

Out-of-plane impact near the edge of composite plates has received little attention in the research literature but is a recognized damage mode for aerospace structures and can lead to significant reductions in compressive strength. In this paper, a combined high fidelity Discrete Ply Finite Element Analysis (DPFEA) and quasi-static in-situ X-ray Computed Tomography (XRCT) approach is used to provide insight into the processes driving damage formation in near edge impact of a [(±45)3(03/90)2/02]S laminate. Comparison of DPFEA and XRCT results highlight the significance of 0n/90 interfaces in the development of the most extensive delaminations. Ply blocking is seen to contain damage to the inner 50% of plies in the laminate. Discrepancies are seen between the XRCT and DPFEA results as a consequence of the extent of numerical modelling of the experimental boundary conditions and the need for further consideration of the effect of compression on fracture.

Original language	English
Number of pages	12
Publication status	Published - 1 Jan 2017
Event	21st International Conference on Composite Materials, ICCM 2017 - Xi'an, China Duration: 20 Aug 2017 → 25 Aug 2017

Conference

Conference	21st International Conference on Composite Materials, ICCM 2017
Country/Territory	China
City	Xi'an
Period	20/08/17 → 25/08/17

Keywords

Damage tolerance
FEA
Impact damage
X-ray CT

ASJC Scopus subject areas

Engineering(all)
Ceramics and Composites

Access to Document

http://www.iccm-central.org/Proceedings/ICCM21proceedings/papers/3844.pdf

Cite this

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title = "The effect of ply blocking on near-edge impact damage mechanisms",

abstract = "Out-of-plane impact near the edge of composite plates has received little attention in the research literature but is a recognized damage mode for aerospace structures and can lead to significant reductions in compressive strength. In this paper, a combined high fidelity Discrete Ply Finite Element Analysis (DPFEA) and quasi-static in-situ X-ray Computed Tomography (XRCT) approach is used to provide insight into the processes driving damage formation in near edge impact of a [(±45)3(03/90)2/02]S laminate. Comparison of DPFEA and XRCT results highlight the significance of 0n/90 interfaces in the development of the most extensive delaminations. Ply blocking is seen to contain damage to the inner 50% of plies in the laminate. Discrepancies are seen between the XRCT and DPFEA results as a consequence of the extent of numerical modelling of the experimental boundary conditions and the need for further consideration of the effect of compression on fracture.",

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AU - Hua, S.

AU - Dubary, N.

AU - Bouvet, C.

AU - Rhead, A. T.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Out-of-plane impact near the edge of composite plates has received little attention in the research literature but is a recognized damage mode for aerospace structures and can lead to significant reductions in compressive strength. In this paper, a combined high fidelity Discrete Ply Finite Element Analysis (DPFEA) and quasi-static in-situ X-ray Computed Tomography (XRCT) approach is used to provide insight into the processes driving damage formation in near edge impact of a [(±45)3(03/90)2/02]S laminate. Comparison of DPFEA and XRCT results highlight the significance of 0n/90 interfaces in the development of the most extensive delaminations. Ply blocking is seen to contain damage to the inner 50% of plies in the laminate. Discrepancies are seen between the XRCT and DPFEA results as a consequence of the extent of numerical modelling of the experimental boundary conditions and the need for further consideration of the effect of compression on fracture.

AB - Out-of-plane impact near the edge of composite plates has received little attention in the research literature but is a recognized damage mode for aerospace structures and can lead to significant reductions in compressive strength. In this paper, a combined high fidelity Discrete Ply Finite Element Analysis (DPFEA) and quasi-static in-situ X-ray Computed Tomography (XRCT) approach is used to provide insight into the processes driving damage formation in near edge impact of a [(±45)3(03/90)2/02]S laminate. Comparison of DPFEA and XRCT results highlight the significance of 0n/90 interfaces in the development of the most extensive delaminations. Ply blocking is seen to contain damage to the inner 50% of plies in the laminate. Discrepancies are seen between the XRCT and DPFEA results as a consequence of the extent of numerical modelling of the experimental boundary conditions and the need for further consideration of the effect of compression on fracture.

KW - Damage tolerance

KW - FEA

KW - Impact damage

KW - X-ray CT

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T2 - 21st International Conference on Composite Materials, ICCM 2017

Y2 - 20 August 2017 through 25 August 2017

ER -

The effect of ply blocking on near-edge impact damage mechanisms

Abstract

Conference

Keywords

ASJC Scopus subject areas

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