Počet záznamů: 1
An Infrared Thermography Approach to Evaluate the Strength of a Rock Cliff
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SYSNO ASEP 0542525 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název An Infrared Thermography Approach to Evaluate the Strength of a Rock Cliff Tvůrce(i) Loche, M. (CZ)
Scaringi, G. (CZ)
Blahůt, Jan (USMH-B) RID, ORCID, SAI
Melis, M.T. (IT)
Funedda, A. (IT)
Da Pelo, S. (IT)
Erbi, I. (IT)
Deiana, G. (IT)
Meloni, M.A. (IT)
Cocco, F. (IT)Celkový počet autorů 10 Číslo článku 1265 Zdroj.dok. Remote Sensing. - : MDPI
Roč. 13, č. 7 (2021)Poč.str. 13 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova compressive strength ; infrared thermography ; rebound hammer ; cooling rate index Vědní obor RIV DB - Geologie a mineralogie Obor OECD Geology Způsob publikování Open access Institucionální podpora USMH-B - RVO:67985891 UT WOS 000638803000001 DOI 10.3390/rs13071265 Anotace The mechanical strength is a fundamental characteristic of rock masses that can be empirically related to a number of properties and to the likelihood of instability phenomena. Direct field acquisition of mechanical information on tall cliffs, however, is challenging, particularly in coastal and alpine environments. Here, we propose a method to evaluate the compressive strength of rock blocks by monitoring their thermal behaviour over a 24-h period by infrared thermography. Using a drone-mounted thermal camera and a Schmidt (rebound) hammer, we surveyed granitoid and aphanitic blocks in a coastal cliff in south-east Sardinia, Italy. We observed a strong correlation between a simple cooling index, evaluated in the hours succeeding the temperature peak, and strength values estimated from rebound hammer test results. We also noticed different heating-cooling patterns in relation to the nature and structure of the rock blocks and to the size of the fractures. Although further validation is warranted in different morpho-lithological settings, we believe the proposed method may prove a valid tool for the characterisation of non-directly accessible rock faces, and may serve as a basis for the formulation, calibration, and validation of thermo-hydro-mechanical constitutive models. Pracoviště Ústav struktury a mechaniky hornin Kontakt Iva Švihálková, svihalkova@irsm.cas.cz, Tel.: 266 009 216 Rok sběru 2022 Elektronická adresa https://www.mdpi.com/2072-4292/13/7/1265
Počet záznamů: 1