Quantitative Evaluation of Delamination in Composites Using Lamb Waves

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F17%3AN0000134" target="_blank" >RIV/00010669:_____/17:N0000134 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00010669:_____/18:N0000055

Výsledek na webu

<a href="http://iopscience.iop.org/article/10.1088/1757-899X/326/1/012006/meta" target="_blank" >http://iopscience.iop.org/article/10.1088/1757-899X/326/1/012006/meta</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/326/1/012006" target="_blank" >10.1088/1757-899X/326/1/012006</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quantitative Evaluation of Delamination in Composites Using Lamb Waves

Popis výsledku v původním jazyce

Ultrasonic guided wave monitoring has become very popular in the area of structural health monitoring (SHM) of aerospace structures. Any possible type of damage must be reliably assessed. The paper deals with delamination length determination in DCB specimens using Lamb waves. An analytical equation based on the velocity dependence on variable thickness is utilized. The group velocity of the fundamental antisymmetric A0 mode rapidly changes in a particular range of the frequency-thickness product. Using the same actuation frequency the propagation velocity is different for delaminated structure. Lamb wave based delamination lengths were compared to the visually determined lengths. The method of the wave velocity determination proved to be essential. More accurate results were achieved by tracking the maximum amplitude of A0 mode than the first signal arrival. These findings are considered as the basis for the damage evaluation of complex structures.

Název v anglickém jazyce

Quantitative Evaluation of Delamination in Composites Using Lamb Waves

Popis výsledku anglicky

Ultrasonic guided wave monitoring has become very popular in the area of structural health monitoring (SHM) of aerospace structures. Any possible type of damage must be reliably assessed. The paper deals with delamination length determination in DCB specimens using Lamb waves. An analytical equation based on the velocity dependence on variable thickness is utilized. The group velocity of the fundamental antisymmetric A0 mode rapidly changes in a particular range of the frequency-thickness product. Using the same actuation frequency the propagation velocity is different for delaminated structure. Lamb wave based delamination lengths were compared to the visually determined lengths. The method of the wave velocity determination proved to be essential. More accurate results were achieved by tracking the maximum amplitude of A0 mode than the first signal arrival. These findings are considered as the basis for the damage evaluation of complex structures.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

IOP Confrence Series: Materials Science and Engineering

ISBN

—

ISSN

1757-8981

e-ISSN

—

Počet stran výsledku

6

Strana od-do

nestrankovano

Název nakladatele

Institute of Physics Publishing

Místo vydání

Neuveden

Místo konání akce

Dubaj, SAE

Datum konání akce

1. 1. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—