Estimation of Credibility of the Results of Measuring Temperature within Specimens of Wood Columns Obtained During Fire Tests

  • Authors

    • Yurii Feshchuk
    • Serhii Pozdieiev
    • Yana Zmaga
    • Alina Novhorodchenko
    https://doi.org/10.14419/ijet.v7i4.3.19805

    Received date: September 18, 2018

    Accepted date: September 18, 2018

    Published date: September 15, 2018

  • fire resistance, isotherm, results credibility, temperature, wooden column

  • Abstract

    Analysis of the results of experimental studies of wood columns mode of behaviour both having fire retardant coating based on OSB slabs and without any coating under standard time – temperature curve fire conditions was realized. An assumption was made that thermocouple wires could be positioned along isotherm at a distance of at least 50 mm from measuring thermojunctions (otherwise disturbance of the structure of isotherm itself possible). Due to specific features of thermocouples positioning within the specimen, this assumption calls in question of credibility of the obtained results of temperature indices measuring. Bearing this in mind we prepared calculation scheme of the specimen of wood column under study. We have composed finite elements scheme of specimen under study for heat engineering calculations. We simulated temperature distributions within the wood column specimen section at various moments of time and substantiated the obtained results. It was revealed in the course of the study conducted that the obtained results were adequate for relative error was as small as ca. 4.5% and Fisher test did not exceed appropriate tabulated value. Thus, assumption made does not affect in general credibility of the results of measuring thermal values within the layers of specimens obtained during fire tests.

  • References

    1. Pozdieiev S., Nuianzin O., Sidnei S., Shchipets S., ”Computational study of bearing walls fire resistance tests efficiency using different combustion furnaces configurations”, MATEC Web of Conferences, Vol.116, No.02027, (2017), pp.1-5, available online: https://doi.org/10.1051/matecconf/201711602027.
    2. Nekora O., Slovynsky V., Pozdieiev S., ”The research of bearing ca-pacity of reinforced concrete beam with use combined experimental-computational method”, MATEC Web of Conferences, Vol.116, No.02024, (2017), pp.1-5, available online: https://doi.org/10.1051/matecconf/201711602024.
    3. Mygalenko K., Nuyanzin V., Zemlianskyi A., Dominik A., Pozdieiev S., ”Development of the technique for restricting the propagation of fire in natural peat ecosystems”, Eastern-European Journal of Enterprise Technologies, Vol.1, No.10 (91), (2018), pp.31-37, avail-able online: https://doi.org/10.15587/1729-4061.2018.121727.
    4. Danchenko Y., Andronov V., Teslenko M., Permiakov V., Rybka E., Meleshchenko R., Kosse A., ”Study of the free surface energy of epoxy composites using an automated measurement system”, East-ern-European Journal of Enterprise Technologies, Vol.1, No.12 (91), pp.9-17, available online: https://doi.org/10.15587/1729-4061.2018.120998.
    5. Pospelov B., Andronov V., Rybka E., Popov V., Romin A., ”Experi-mental study of the fluctuations of gas medium parameters as early signs of fire”, Eastern-European Journal of Enterprise Technologies, Vol.1, No.10 (91), (2018), pp.50-55, available online: https://doi.org/10.15587/1729-4061.2018.122419.
    6. Pospelov B., Andronov V., Rybka E., Popov V., Semkiv O., ”Devel-opment of the method of frequency­temporal representation of fluc-tuations of gaseous medium parameters at fire”, Eastern-European Journal of Enterprise Technologies, Vol.2, No.10 (92), (2018), pp.44-49, available online: http://journals.uran.ua/eejet/article/view/125926/124844.
    7. Kochenov V.M., Nesuschaya sposobnost elementov derevyannyih konstruktsіy,V.: Stroyizdat, (1953), pp.320.
    8. Kann E.A., Derevyannyie konstruktsii v sovremennom stroitelstve, Kishinev: Shniintsa, (1981), pp.180.
    9. Zmaha Ya.V., “Rozrakhunkovyi metod pidvyshchenoi tochnosti dlia otsinky mezhi vohnestiikosti derevianykh balok z vohnezakhysnym prosochenniam”, [avtoref. dys. na zdobuttia nauk. stupenia kand. tekh. nauk: spets. 21.06.02 “Pozhezhna bezpeka”], Kharkiv, (2016), pp.23.
    10. Demeshok V., ”Calculation method for evaluation of the fire re-sistance of timber slabs, using the finite elements method”, . Scientific bulletin: Civil protection and fire safety, No.1 (3), (2017), pp.67-74, available online: http://firesafety.at.ua/Visnyk_new/N2_2017/16_demeshok.pdf.
    11. Barber D., Gerard R., Summary of the fire protection foundation re-port - fire safety challenges of tall wood buildings, (2015), available online: https://firesciencereviews.springeropen.com/articles/10.1186/s40038-015-0009-3.
    12. Feshchuk Yu.L., Pozdieiev S.V., Nizhnyk V.V., ”Experimental re-searches of the behavior of wooden columns with membrane fire-proofing under fire conditions”, Problems of fire safety, No.42, (2017), pp.155-164, available online: http://nuczu.edu.ua/sciencearchive/ProblemsOfFireSafety/vol42/feshchuk.pdf.
    13. Feshchuk Yu.L., Pozdieiev S.V., Nizhnyk V.V., Borys O.P., Dolish-niy Yu.V., ”The method of experimental researches of the behavior of wooden columns with membrane fireproofing and without it under fire conditions”, Scientific bulletin: Civil protection and fire safety, No.1 (3), (2017), pp.98-102, available online: http://firesafety.at.ua/Visnyk_new/N1-3_2017/15_feshhuk.pdf.
    14. Vlasova Ye.A., Zarubin V.S., Kuvyrkin H.N., Priblizhennyie metodyi matematicheskoy fiziki: [uchebn. dlya vuzov / pod red. V.S. Zarubina, A.P. Krischenko], Moscow: MGTU im. Baumana, (2001), p.700.
    15. ANSYS, ANSYS 9.0 Manual Set, ANSYS Inc., Southpoint, 275 Technology Drive, Canonsburg, PA 15317, USA.

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  • How to Cite

    Feshchuk, Y., Pozdieiev, S., Zmaga, Y., & Novhorodchenko, A. (2018). Estimation of Credibility of the Results of Measuring Temperature within Specimens of Wood Columns Obtained During Fire Tests. International Journal of Engineering and Technology, 7(4.3), 284-287. https://doi.org/10.14419/ijet.v7i4.3.19805