Fatigue performance of CFRP patched pre-cracked steel plates after extreme environmental exposure

D. Borrie; X. L. Zhao; R. K. Singh Raman; Y. Bai

doi:10.1016/j.compstruct.2016.05.092

Fatigue performance of CFRP patched pre-cracked steel plates after extreme environmental exposure

D. Borrie, X. L. Zhao, R. K. Singh Raman, Y. Bai

Research output: Journal article publication › Journal article › Academic research › peer-review

22 Citations (Scopus)

Abstract

Carbon fibre reinforced polymers (CFRPs) provide new, lightweight and durable possibilities in structural rehabilitation. However, their industrial applications are limited due to lack of knowledge on the durability and effectiveness of CFRP patches under field like exposures. This paper outlines an experimental investigation into the fatigue life of CFRP sheeting patched pre-cracked steel plates under elevated temperature marine submergence. Tri-layered high modulus CFRP repaired steel systems were submerged in a 5% (by weight) NaCl solution for durations up to 6 months at 20 and 50 °C, while under a static tensile load to simulate service load. After immersion, specimens were fatigue loaded in tension at 15-150 MPa until complete failure for the purpose of the determination of the severity of degradation that aggressive environmental exposure caused to the life of CFRP to steel patches. These tests exhibited fatigue life extensions of between 1.85 and 3.26 when a single side of the crack was patched, and greater than 24 for double-sided patch configurations. The results demonstrate CFRP applications enhance the fatigue life of damaged steels and can in fact be adapted even under extreme exposure scenarios.

Original language	English
Pages (from-to)	50-59
Number of pages	10
Journal	Composite Structures
Volume	153
DOIs	https://doi.org/10.1016/j.compstruct.2016.05.092
Publication status	Published - 1 Oct 2016
Externally published	Yes

Keywords

CFRP
Damaged
Environmental exposure
Fatigue life
Silane
Steel

ASJC Scopus subject areas

Ceramics and Composites
Civil and Structural Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

More information

10.1016/j.compstruct.2016.05.092

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title = "Fatigue performance of CFRP patched pre-cracked steel plates after extreme environmental exposure",

abstract = "Carbon fibre reinforced polymers (CFRPs) provide new, lightweight and durable possibilities in structural rehabilitation. However, their industrial applications are limited due to lack of knowledge on the durability and effectiveness of CFRP patches under field like exposures. This paper outlines an experimental investigation into the fatigue life of CFRP sheeting patched pre-cracked steel plates under elevated temperature marine submergence. Tri-layered high modulus CFRP repaired steel systems were submerged in a 5% (by weight) NaCl solution for durations up to 6 months at 20 and 50 °C, while under a static tensile load to simulate service load. After immersion, specimens were fatigue loaded in tension at 15-150 MPa until complete failure for the purpose of the determination of the severity of degradation that aggressive environmental exposure caused to the life of CFRP to steel patches. These tests exhibited fatigue life extensions of between 1.85 and 3.26 when a single side of the crack was patched, and greater than 24 for double-sided patch configurations. The results demonstrate CFRP applications enhance the fatigue life of damaged steels and can in fact be adapted even under extreme exposure scenarios.",

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author = "D. Borrie and Zhao, {X. L.} and {Singh Raman}, {R. K.} and Y. Bai",

note = "Funding Information: The authors would like to acknowledge much of the ongoing help with relation to this paper. The technical support provided by Mr. Long Goh from the Monash Civil Engineering Laboratory is forever appreciated. The advice and assistance of Dr. Saad Al-Saadi from the Monash University Chemical Engineering Department during the preparation and application of silane solutions. This project was completed under a Noel Murray Scholarship at Monash University and sponsored by an ARC Discovery Grant ( DP120101708 ) and National Key Basic Research Program of China (973 Program, 2012CB026200 ). Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd.",

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AU - Singh Raman, R. K.

AU - Bai, Y.

N1 - Funding Information: The authors would like to acknowledge much of the ongoing help with relation to this paper. The technical support provided by Mr. Long Goh from the Monash Civil Engineering Laboratory is forever appreciated. The advice and assistance of Dr. Saad Al-Saadi from the Monash University Chemical Engineering Department during the preparation and application of silane solutions. This project was completed under a Noel Murray Scholarship at Monash University and sponsored by an ARC Discovery Grant ( DP120101708 ) and National Key Basic Research Program of China (973 Program, 2012CB026200 ). Publisher Copyright: © 2016 Elsevier Ltd.

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N2 - Carbon fibre reinforced polymers (CFRPs) provide new, lightweight and durable possibilities in structural rehabilitation. However, their industrial applications are limited due to lack of knowledge on the durability and effectiveness of CFRP patches under field like exposures. This paper outlines an experimental investigation into the fatigue life of CFRP sheeting patched pre-cracked steel plates under elevated temperature marine submergence. Tri-layered high modulus CFRP repaired steel systems were submerged in a 5% (by weight) NaCl solution for durations up to 6 months at 20 and 50 °C, while under a static tensile load to simulate service load. After immersion, specimens were fatigue loaded in tension at 15-150 MPa until complete failure for the purpose of the determination of the severity of degradation that aggressive environmental exposure caused to the life of CFRP to steel patches. These tests exhibited fatigue life extensions of between 1.85 and 3.26 when a single side of the crack was patched, and greater than 24 for double-sided patch configurations. The results demonstrate CFRP applications enhance the fatigue life of damaged steels and can in fact be adapted even under extreme exposure scenarios.

AB - Carbon fibre reinforced polymers (CFRPs) provide new, lightweight and durable possibilities in structural rehabilitation. However, their industrial applications are limited due to lack of knowledge on the durability and effectiveness of CFRP patches under field like exposures. This paper outlines an experimental investigation into the fatigue life of CFRP sheeting patched pre-cracked steel plates under elevated temperature marine submergence. Tri-layered high modulus CFRP repaired steel systems were submerged in a 5% (by weight) NaCl solution for durations up to 6 months at 20 and 50 °C, while under a static tensile load to simulate service load. After immersion, specimens were fatigue loaded in tension at 15-150 MPa until complete failure for the purpose of the determination of the severity of degradation that aggressive environmental exposure caused to the life of CFRP to steel patches. These tests exhibited fatigue life extensions of between 1.85 and 3.26 when a single side of the crack was patched, and greater than 24 for double-sided patch configurations. The results demonstrate CFRP applications enhance the fatigue life of damaged steels and can in fact be adapted even under extreme exposure scenarios.

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Fatigue performance of CFRP patched pre-cracked steel plates after extreme environmental exposure

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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