Slow-growth damage tolerance for fatigue after impact in FRP composites: Why current research won’t get us there

J.A. Pascoe

doi:10.1016/j.prostr.2020.10.084

Slow-growth damage tolerance for fatigue after impact in FRP composites: Why current research won’t get us there

J.A. Pascoe

Structural Integrity & Composites

Research output: Contribution to journal › Conference article › Scientific › peer-review

6 Citations (Scopus)

303 Downloads (Pure)

Abstract

Impact damage in CFRP structures is currently managed using the ‘no-growth’ concept, meaning that damage is not allowed to grow under fatigue loading. This requires that stresses in the material are kept below the fatigue limit, imposing a significant weight penalty. A ‘slow-growth’ concept would allow more efficient structural designs, but several knowledge gaps need to be addressed before this is possible. These gaps exist in three main areas: (1) damage characterisation, (2) fatigue driven delamination growth after impact, and (3) final failure of impacted laminates. The paper highlights open questions and the shortcomings of current research in addressing them, and suggests avenues for future research.

Original language	English
Pages (from-to)	726-733
Number of pages	8
Journal	Procedia Structural Integrity
Volume	28
DOIs	https://doi.org/10.1016/j.prostr.2020.10.084
Publication status	Published - 2020
Event	1st Virtual European Conference on Fracture - Virtual/online event due to COVID-19 Duration: 29 Jun 2020 → 1 Jul 2020 https://www.vecf1.eu/

Bibliographical note

Conference paper presented at the 1st Virtual European Conference on Fracture

Keywords

Compression after impact
Damage management
Damage tolerance

Access to Document

10.1016/j.prostr.2020.10.084

Pascoe2020-VECF1Final published version, 336 KBLicence: CC BY-NC-ND

Cite this

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title = "Slow-growth damage tolerance for fatigue after impact in FRP composites: Why current research won{\textquoteright}t get us there",

abstract = "Impact damage in CFRP structures is currently managed using the {\textquoteleft}no-growth{\textquoteright} concept, meaning that damage is not allowed to grow under fatigue loading. This requires that stresses in the material are kept below the fatigue limit, imposing a significant weight penalty. A {\textquoteleft}slow-growth{\textquoteright} concept would allow more efficient structural designs, but several knowledge gaps need to be addressed before this is possible. These gaps exist in three main areas: (1) damage characterisation, (2) fatigue driven delamination growth after impact, and (3) final failure of impacted laminates. The paper highlights open questions and the shortcomings of current research in addressing them, and suggests avenues for future research.",

keywords = "Compression after impact, Damage management, Damage tolerance",

author = "J.A. Pascoe",

note = "Conference paper presented at the 1st Virtual European Conference on Fracture; 1st Virtual European Conference on Fracture, VECF1 ; Conference date: 29-06-2020 Through 01-07-2020",

year = "2020",

doi = "10.1016/j.prostr.2020.10.084",

language = "English",

volume = "28",

pages = "726--733",

journal = "Procedia Structural Integrity",

issn = "2452-3216",

publisher = "Elsevier",

url = "https://www.vecf1.eu/",

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T1 - Slow-growth damage tolerance for fatigue after impact in FRP composites: Why current research won’t get us there

AU - Pascoe, J.A.

N1 - Conference paper presented at the 1st Virtual European Conference on Fracture

PY - 2020

Y1 - 2020

N2 - Impact damage in CFRP structures is currently managed using the ‘no-growth’ concept, meaning that damage is not allowed to grow under fatigue loading. This requires that stresses in the material are kept below the fatigue limit, imposing a significant weight penalty. A ‘slow-growth’ concept would allow more efficient structural designs, but several knowledge gaps need to be addressed before this is possible. These gaps exist in three main areas: (1) damage characterisation, (2) fatigue driven delamination growth after impact, and (3) final failure of impacted laminates. The paper highlights open questions and the shortcomings of current research in addressing them, and suggests avenues for future research.

AB - Impact damage in CFRP structures is currently managed using the ‘no-growth’ concept, meaning that damage is not allowed to grow under fatigue loading. This requires that stresses in the material are kept below the fatigue limit, imposing a significant weight penalty. A ‘slow-growth’ concept would allow more efficient structural designs, but several knowledge gaps need to be addressed before this is possible. These gaps exist in three main areas: (1) damage characterisation, (2) fatigue driven delamination growth after impact, and (3) final failure of impacted laminates. The paper highlights open questions and the shortcomings of current research in addressing them, and suggests avenues for future research.

KW - Compression after impact

KW - Damage management

KW - Damage tolerance

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DO - 10.1016/j.prostr.2020.10.084

M3 - Conference article

SN - 2452-3216

VL - 28

SP - 726

EP - 733

JO - Procedia Structural Integrity

JF - Procedia Structural Integrity

T2 - 1st Virtual European Conference on Fracture

Y2 - 29 June 2020 through 1 July 2020

ER -

Slow-growth damage tolerance for fatigue after impact in FRP composites: Why current research won’t get us there

Abstract

Bibliographical note

Keywords

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