LOW VELOCITY IMPACT AND RESIDUAL STRENGTH ANALYSIS OF CARBON FIBER SMC COMPOSITES

Biruk Nega; Robert S. Pierce; Xiaosu Yi; Xiaoling Liu

LOW VELOCITY IMPACT AND RESIDUAL STRENGTH ANALYSIS OF CARBON FIBER SMC COMPOSITES

Biruk Nega, Robert S. Pierce, Xiaosu Yi, Xiaoling Liu

Department of Mechanical, Materials and Manufacturing Engineering

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

Abstract

In this work, the low velocity impact response, and residual tensile and compressive strengths of carbon fibre Sheet Moulding Compound (SMC) composites have been investigated experimentally. Drop-weight impact tests have been performed at two energies (7.5J and 15J), and the extent of damage has been characterized using ultrasonic inspection. The lower energy impact produced very little observable damage in the SMCs, while large damage areas with visible surface cracking was observed at higher impact energy. The 15J impact samples resulted in 16% and 25% reductions in tensile and compressive strengths respectively, whereas the 7.5J impact caused no observable change in the SMC performance. Digital Image Correlation (DIC) from compression testing showed a relationship between the impact damage area and post-impact fracture initiation sites.

Original language	English
Title of host publication	Materials
Editors	Anastasios P. Vassilopoulos, Veronique Michaud
Publisher	Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL)
Pages	263-270
Number of pages	8
ISBN (Electronic)	9782970161400
Publication status	Published - 2022
Event	20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022 - Lausanne, Switzerland Duration: 26 Jun 2022 → 30 Jun 2022

Publication series

Name	ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability
Volume	1

Conference

Conference	20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022
Country/Territory	Switzerland
City	Lausanne
Period	26/06/22 → 30/06/22

Keywords

Compression After Impact
Low velocity impact
SMC
Tension After Impact

ASJC Scopus subject areas

Ceramics and Composites

Cite this

Nega, B., Pierce, R. S., Yi, X., & Liu, X. (2022). LOW VELOCITY IMPACT AND RESIDUAL STRENGTH ANALYSIS OF CARBON FIBER SMC COMPOSITES. In A. P. Vassilopoulos, & V. Michaud (Eds.), Materials (pp. 263-270). (ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability; Vol. 1). Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL).

Nega, Biruk ; Pierce, Robert S. ; Yi, Xiaosu et al. / LOW VELOCITY IMPACT AND RESIDUAL STRENGTH ANALYSIS OF CARBON FIBER SMC COMPOSITES. Materials. editor / Anastasios P. Vassilopoulos ; Veronique Michaud. Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL), 2022. pp. 263-270 (ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability).

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title = "LOW VELOCITY IMPACT AND RESIDUAL STRENGTH ANALYSIS OF CARBON FIBER SMC COMPOSITES",

abstract = "In this work, the low velocity impact response, and residual tensile and compressive strengths of carbon fibre Sheet Moulding Compound (SMC) composites have been investigated experimentally. Drop-weight impact tests have been performed at two energies (7.5J and 15J), and the extent of damage has been characterized using ultrasonic inspection. The lower energy impact produced very little observable damage in the SMCs, while large damage areas with visible surface cracking was observed at higher impact energy. The 15J impact samples resulted in 16% and 25% reductions in tensile and compressive strengths respectively, whereas the 7.5J impact caused no observable change in the SMC performance. Digital Image Correlation (DIC) from compression testing showed a relationship between the impact damage area and post-impact fracture initiation sites.",

keywords = "Compression After Impact, Low velocity impact, SMC, Tension After Impact",

author = "Biruk Nega and Pierce, {Robert S.} and Xiaosu Yi and Xiaoling Liu",

note = "Publisher Copyright: {\textcopyright} 2022 Nega et al.; 20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022 ; Conference date: 26-06-2022 Through 30-06-2022",

year = "2022",

language = "English",

series = "ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability",

publisher = "Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL)",

pages = "263--270",

editor = "Vassilopoulos, {Anastasios P.} and Veronique Michaud",

booktitle = "Materials",

}

Nega, B, Pierce, RS, Yi, X & Liu, X 2022, LOW VELOCITY IMPACT AND RESIDUAL STRENGTH ANALYSIS OF CARBON FIBER SMC COMPOSITES. in AP Vassilopoulos & V Michaud (eds), Materials. ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability, vol. 1, Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL), pp. 263-270, 20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022, Lausanne, Switzerland, 26/06/22.

LOW VELOCITY IMPACT AND RESIDUAL STRENGTH ANALYSIS OF CARBON FIBER SMC COMPOSITES. / Nega, Biruk; Pierce, Robert S.; Yi, Xiaosu et al.
Materials. ed. / Anastasios P. Vassilopoulos; Veronique Michaud. Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL), 2022. p. 263-270 (ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability; Vol. 1).

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

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T1 - LOW VELOCITY IMPACT AND RESIDUAL STRENGTH ANALYSIS OF CARBON FIBER SMC COMPOSITES

AU - Nega, Biruk

AU - Pierce, Robert S.

AU - Yi, Xiaosu

AU - Liu, Xiaoling

PY - 2022

Y1 - 2022

N2 - In this work, the low velocity impact response, and residual tensile and compressive strengths of carbon fibre Sheet Moulding Compound (SMC) composites have been investigated experimentally. Drop-weight impact tests have been performed at two energies (7.5J and 15J), and the extent of damage has been characterized using ultrasonic inspection. The lower energy impact produced very little observable damage in the SMCs, while large damage areas with visible surface cracking was observed at higher impact energy. The 15J impact samples resulted in 16% and 25% reductions in tensile and compressive strengths respectively, whereas the 7.5J impact caused no observable change in the SMC performance. Digital Image Correlation (DIC) from compression testing showed a relationship between the impact damage area and post-impact fracture initiation sites.

AB - In this work, the low velocity impact response, and residual tensile and compressive strengths of carbon fibre Sheet Moulding Compound (SMC) composites have been investigated experimentally. Drop-weight impact tests have been performed at two energies (7.5J and 15J), and the extent of damage has been characterized using ultrasonic inspection. The lower energy impact produced very little observable damage in the SMCs, while large damage areas with visible surface cracking was observed at higher impact energy. The 15J impact samples resulted in 16% and 25% reductions in tensile and compressive strengths respectively, whereas the 7.5J impact caused no observable change in the SMC performance. Digital Image Correlation (DIC) from compression testing showed a relationship between the impact damage area and post-impact fracture initiation sites.

KW - Compression After Impact

KW - Low velocity impact

KW - SMC

KW - Tension After Impact

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M3 - Conference contribution

AN - SCOPUS:85149183741

T3 - ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability

SP - 263

EP - 270

BT - Materials

A2 - Vassilopoulos, Anastasios P.

A2 - Michaud, Veronique

PB - Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL)

T2 - 20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022

Y2 - 26 June 2022 through 30 June 2022

ER -

Nega B, Pierce RS, Yi X , Liu X. LOW VELOCITY IMPACT AND RESIDUAL STRENGTH ANALYSIS OF CARBON FIBER SMC COMPOSITES. In Vassilopoulos AP, Michaud V, editors, Materials. Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL). 2022. p. 263-270. (ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability).

LOW VELOCITY IMPACT AND RESIDUAL STRENGTH ANALYSIS OF CARBON FIBER SMC COMPOSITES

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

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