Uncertainties in Characteristic Strengths of Historic Steels Using Non-Destructive Techniques

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00343520" target="_blank" >RIV/68407700:21110/19:00343520 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21610/19:00343520

Výsledek na webu

<a href="https://doi.org/10.35181/tces-2019-0022" target="_blank" >https://doi.org/10.35181/tces-2019-0022</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.35181/tces-2019-0022" target="_blank" >10.35181/tces-2019-0022</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Uncertainties in Characteristic Strengths of Historic Steels Using Non-Destructive Techniques

Popis výsledku v původním jazyce

The use of various non- or minor-destructive tests (NDTs) is often preferred to reduce the cost of structural surveys of historic structures made of cast and wrought irons or old carbon steels. This contribution thus explores the measurement errors associated with common NDT techniques and quantifies uncertainties in characteristic strength estimates based on NDTs only. It appears that a unity mean and coefficient of variation of 12% might be adopted for the measurement uncertainty of the methods under study (Brinell, Leeb, Poldi, Vickers, Rockwell). On average, the true characteristic ultimate strength is by ~15% larger than that based on many NDTs. This represents the expected gain when the characteristic value is estimated from five DTs instead of a large number of NDTs. In practice detailed reliability assessments should always be based on results of DTs or at least on NDTs properly calibrated by DTs.

Název v anglickém jazyce

Uncertainties in Characteristic Strengths of Historic Steels Using Non-Destructive Techniques

Popis výsledku anglicky

The use of various non- or minor-destructive tests (NDTs) is often preferred to reduce the cost of structural surveys of historic structures made of cast and wrought irons or old carbon steels. This contribution thus explores the measurement errors associated with common NDT techniques and quantifies uncertainties in characteristic strength estimates based on NDTs only. It appears that a unity mean and coefficient of variation of 12% might be adopted for the measurement uncertainty of the methods under study (Brinell, Leeb, Poldi, Vickers, Rockwell). On average, the true characteristic ultimate strength is by ~15% larger than that based on many NDTs. This represents the expected gain when the characteristic value is estimated from five DTs instead of a large number of NDTs. In practice detailed reliability assessments should always be based on results of DTs or at least on NDTs properly calibrated by DTs.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/DG18P02OVV033" target="_blank" >DG18P02OVV033: Metody pro zajištění udržitelnosti ocelových mostních konstrukcí industriálního kulturního dědictví</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Transactions of the VSB - Technical University of Ostrava. Construction Series

ISSN

1804-4824

e-ISSN

1804-4824

Svazek periodika

19

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

6

Strana od-do

65-70

Kód UT WoS článku

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EID výsledku v databázi Scopus

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