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A comparison of quasi-static indentation and low-velocity impact on composite overwrapped pressure vessels

A comparison of quasi-static indentation and low-velocity impact on composite overwrapped pressure vessels
A comparison of quasi-static indentation and low-velocity impact on composite overwrapped pressure vessels

The equivalence of quasi-static indentation and low-velocity impact loading regimes has been assessed for composite overwrapped pressure vessels. Test specimens were assessed in detail in terms of the force–displacement response, and micro-focus computed tomography was used for qualitative and quantitative assessment of the associated damage to the constituent materials/interfaces. The results show that the force–displacement response follows an essentially similar pattern between the two loading regimes (within 10% for all cases). Quantitative assessment of the projected composite damage area and permanent deformation of the aluminium substrate as a function of peak indentor displacement also showed a high degree of equivalence between the loading regimes. It is concluded that quasi-static indentation represents a usable analogue for mechanistic assessment of low-velocity impact damage in the tested composite overwrapped pressure vessels.

computed tomography, Hybrid structures, low-velocity impact, quasi-static indentation
0021-9983
Allen, Trevor
42b0845b-fa1f-45d5-a88b-2d1a6f564130
Ahmed, Sharif
37570e92-ba6b-4e03-9144-c70fa7722c51
Hepples, Warren
2ef2a0f5-159e-4601-b48f-81d015fa9381
Reed, Philippa A.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Sinclair, Ian
6005f6c1-f478-434e-a52d-d310c18ade0d
Spearing, Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Allen, Trevor
42b0845b-fa1f-45d5-a88b-2d1a6f564130
Ahmed, Sharif
37570e92-ba6b-4e03-9144-c70fa7722c51
Hepples, Warren
2ef2a0f5-159e-4601-b48f-81d015fa9381
Reed, Philippa A.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Sinclair, Ian
6005f6c1-f478-434e-a52d-d310c18ade0d
Spearing, Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a

Allen, Trevor, Ahmed, Sharif, Hepples, Warren, Reed, Philippa A., Sinclair, Ian and Spearing, Mark (2018) A comparison of quasi-static indentation and low-velocity impact on composite overwrapped pressure vessels. Journal of Composite Materials. (doi:10.1177/0021998318774401).

Record type: Article

Abstract

The equivalence of quasi-static indentation and low-velocity impact loading regimes has been assessed for composite overwrapped pressure vessels. Test specimens were assessed in detail in terms of the force–displacement response, and micro-focus computed tomography was used for qualitative and quantitative assessment of the associated damage to the constituent materials/interfaces. The results show that the force–displacement response follows an essentially similar pattern between the two loading regimes (within 10% for all cases). Quantitative assessment of the projected composite damage area and permanent deformation of the aluminium substrate as a function of peak indentor displacement also showed a high degree of equivalence between the loading regimes. It is concluded that quasi-static indentation represents a usable analogue for mechanistic assessment of low-velocity impact damage in the tested composite overwrapped pressure vessels.

Text Allen_QSI_LVI_SageFormat_R1 - Accepted Manuscript
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More information

Accepted/In Press date: 11 April 2018
e-pub ahead of print date: 9 May 2018
Keywords: computed tomography, Hybrid structures, low-velocity impact, quasi-static indentation

Identifiers

Local EPrints ID: 422744
URI: https://eprints.soton.ac.uk/id/eprint/422744
ISSN: 0021-9983
PURE UUID: 7312a7fa-a1fd-45a2-a724-8a5e94dd4b0c
ORCID for Sharif Ahmed: ORCID iD orcid.org/0000-0002-3290-3592
ORCID for Philippa A. Reed: ORCID iD orcid.org/0000-0002-2258-0347

Catalogue record

Date deposited: 01 Aug 2018 16:30
Last modified: 02 Aug 2018 00:34

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