Analysis of behavior and failure modes of timber beams prestressed with CFRP strips

Halicka, Anna; Ślósarz, Szymon

doi:10.1016/j.compstruct.2022.116171

Composite Structures

2022

DOI: 10.1016/j.compstruct.2022.116171

|View full text |Cite

Analysis of behavior and failure modes of timber beams prestressed with CFRP strips

Anna Halicka

Szymon Ślósarz

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2023

2024

Publication Types

Select...

Article5

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 7 publications

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Preliminary comparative study on the behaviour of highly-loaded glue laminated timber and wood-CFRP composite beams exposed to local fire

Kawecki,

Pieńko,

Lipecki

et al. 2023

Eur. J. Wood Prod.

View full text Add to dashboard Cite

The paper presents a complex solution for testing loaded structural-sized glue laminated timber and innovative wood-carbon fibre reinforced polymers (CFRP) composite beams exposed to local fire. It shows the entire procedure from predicting a static behaviour and a combustion time (from reaching 300 °C temperature of the element up to its fracture) of the tested elements, designing and building an experimental stand, through conducting preliminary tests and discussing the results. The research included combustion of three glue laminated timber (BSH) and three wood-CFRP composite (BSH-CFRP) structural-sized beams in the most loaded section (region of highest bending moment) under three-point bending. A furnace was set under the centre of the beam on one-third of its span. The dimensions of the basket are based on physical properties of firewood providing proper burning conditions of the elements. The self-designed and self-constructed experimental stand enabled applying high load and provided a stable loading during local fire exposure. The preliminary tests showed that using CFRP tapes inside the section may both increase or decrease fire resistance of wooden members depending on the width of wood material covering CFRP tape. CFRP tapes provide a different nature of beam failure, which is changing from sudden fracture (BSH) to plastic flow of the material (BSH-CFRP).

show abstract

Preliminary comparative study on the behaviour of highly-loaded glue laminated timber and wood-CFRP composite beams exposed to local fire

Kawecki,

Pieńko,

Lipecki

et al. 2023

Eur. J. Wood Prod.

View full text Add to dashboard Cite

show abstract

Experimental investigations on the behaviour of structural-sized wood-CFRP composite beams in local fire

Kawecki,

Pieńko,

Lipecki

et al. 2024

Eur. J. Wood Prod.

View full text Add to dashboard Cite

The study involved combustion of 24 structural-sized beams under three-point bending subjected to substantial loading prior to ignition, reaching 90% of characteristic load-carrying capacity. A localised fire exposure zone was established proximal to the region experiencing the highest bending moment. The specimens were categorised into two groups: the first consisted of tituted by glued-laminated timber (B), and the second comprised wood-CFRP (carbon fibre reinforced polymer) composite (BW). Initial measurements encompassed pre-ignition static deflection and load. Subsequently, the specimens underwent controlled combustion, during which parameters including burning duration and deflection up to failure, were documented. Following cooling with sand, two cross-sectional slices were extracted from each fractured beam, enabling to find vector-based contours of the remaining cross-section. The charring rate and the approximate heat flux density for each test were determined, enabling a direct comparison of the results. A statistically significant number of specimens was examined, facilitating a comparative analysis between reinforced and unreinforced beams concerning failure time and form. Incorporating CFRP tapes among wooden constituents was found to increase the fire resistance of the structure, however, the thickness of the wooden material enveloping the CFRP composite emerges as a pivotal determinant. This issue needs thorough testing under standard fire in the future. Nevertheless, the fact is that adding CFRP tapes engenders a distinct form of beam collapse, transitioning from instantaneous cracking in B-beams to ductile failure in BW-beams.

show abstract

Eco-friendly, lightweight, and high-strength sandwich corrugated particleboard from tea oil camellia (Camellia oleifera Abel.) shells

Choupani Chaydarreh,

Tan,

Zhou

et al. 2024

Industrial Crops and Products

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Analysis of behavior and failure modes of timber beams prestressed with CFRP strips

Cited by 7 publications

References 34 publications

Preliminary comparative study on the behaviour of highly-loaded glue laminated timber and wood-CFRP composite beams exposed to local fire

Preliminary comparative study on the behaviour of highly-loaded glue laminated timber and wood-CFRP composite beams exposed to local fire

Experimental investigations on the behaviour of structural-sized wood-CFRP composite beams in local fire

Eco-friendly, lightweight, and high-strength sandwich corrugated particleboard from tea oil camellia (Camellia oleifera Abel.) shells

Contact Info

Product

Resources

About