Durability of Wooden Member Reinforced by Carbon-Fiber

Hojo, Tetsuo

doi:10.4028/www.scientific.net/amr.778.569

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…The fact that elements of wooden parquets have been preserved for almost 200 years and do not require reinforcements (reinforcements are typical for historic structures [20,21,[56][57][58][59][60][61][62][63][64]) shows that the wood quality was high.…”

Section: Discussionmentioning

confidence: 99%

Holistic Methods of Assessing the Historical Wooden Structure on the Example of the Floor of the Polish Manor House in Tarnowiec

2023

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Sustainable development should take into account the conservation and preservation of architectural features characteristic of a given cultural area for future generations. Chemical, physical and mechanical properties of timber components are key to assessing the technical preservation of historical timber structures, defining proper restoration methodology and extending the durability of timber structures. Moreover, this evaluation will help to elaborate assessment criteria to decide between the restoration or replacement of a given antique structure. The article presents a method of assessing a historical wooden structure on the example of an antique decorative wooden floor from the beginning of the 19th century, preserved in the Tarnowiec Manor House. It determines tests and scientific analysis as a tool for a decision of possibilities of further usage of the historical floor structure. We performed tests and scientific analysis by calculating the functional properties of the parquet panels, performing a visual inspection, as well as resistance tests, tests of longitudinal curvature deviation and shape preservation, tests of fungi infestation and its impact on the state of preservation, as well as future perspectives for the use of parquet elements. The results of the evaluation verify that the proposed methodologies are reasonable and will help to elaborate assessment criteria to decide between the restoration or replacement of a given antique parquet.

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Section: Discussionmentioning

confidence: 99%

Holistic Methods of Assessing the Historical Wooden Structure on the Example of the Floor of the Polish Manor House in Tarnowiec

2023

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“…Carbon fibers significantly improved the shear strength of bond layers between wood ends. The tensile strength of a reinforced wood member is up to, or even more than, twice the strength of corresponding un-reinforced members [9].…”

Section: Introductionmentioning

confidence: 99%

Investigating the effects of rehabilitation and the use of curved-integrated members on the behavior of chairs

et al. 2020

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Expanding the service life length of wooden made furniture, and consequently decreasing the demand for raw wood could help the economy of the world society and environmental safety. In this research, an experimental inquiry was conducted to determine the effects of curved members, the frame integrity, chair scheme, and rehabilitation of even the failed chairs on the behavior of chairs. The flexural properties of the curved specimens were firstly determined using the ASTM D143-94 test. Then, three layouts of chairs (A, B, and C) made from poplar wood were examined under the DIN EN-1729-1&2 standard. Finally, the failed chairs were rehabilitated using the sheets of glass fiberreinforcing polymers (GFRP) and re-tested. The results showed that the rehabilitation of the curved samples causes rebounding of their mechanical properties. Besides, the rehabilitated samples are more flexible than primary ones. Furthermore, the results demonstrate that the capability of the proposed normalized modulus of rupture (NMOR) criterion, in contrast to the current modulus of rupture (MOR) one, for predicting the failure modes and regions of the wooden and composite structures. The experiments on the chairs showed that all rehabilitated patterns are more robust than primary schemes. That means, the discarded (or discarding) chairs (due to failure of joints, legs, or, in general, a part of the chairs) return to their service life, and massively reduce the demand for wood, which is strongly favored by environmental aspects. Moreover, rehabilitated layout B (RB), which has two continuous-main-curved members is at least 2.4 times stronger than other rehabilitated patterns, and rehabilitated layout C (RC) having three continuous-main-curved members is about 40% stronger than a rehabilitated custom chair (RA), that illustrates more integrity and strength. Besides that, the strength of RB is 2.22 and 2.04 times that of the corresponding primary chairs, depending on front-to-back and up-to-down loading, respectively. Finally, univariate analyses of variance and least significant difference (LSD) showed the high precision of the results. Consequently, the research provides a facility not only to save original material resources, but also to eliminate furniture waste going in the landfill.

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