Comparison of Young’s Moduli Determined by Impulse Excitation Technique (IET), Dynamic Mechanical Analysis (DMA) and Tensile Test (TT)

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Nalezeny alternativní kódy

RIV/70883521:28610/23:63571119

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of Young’s Moduli Determined by Impulse Excitation Technique (IET), Dynamic Mechanical Analysis (DMA) and Tensile Test (TT)

Popis výsledku v původním jazyce

To investigate elastic and viscoelastic mechanical behavior of glass bead reinforced thermoplastics, two composites were tested with Impulse Excitation Technique (IET), Dynamic Mechanical Analysis (DMA) and Tensile Test (TT). 3 point bending DMA tests of neatPolyamide 66 and Poly(butylene terephthalate) as well as their composites (30/40 wt-% and 20/30 wt-%, respectively) were performed in the temperature range 20 to 200 °C for the frequencies 1, 2, 5, 10, and 20 Hz. The theory of Williams, Landel and Ferry (WLF) allows forcomparison of bending moduli of frequency dependent “destructive” DMA measurements to non-destructive IET measurements in flexural mode by determining the eigenfrequency of the specimen at room temperature. Similarly, moduli of IET in longitudinal mode were comparedto Young´s moduli of TT at strain rates of 1, 10, and 100 %/min. Both comparisons provide moduli agreeing well with respect to standard deviations. Furthermore, a cube in cube modelapproach was used to model interfacial adhesion effects and to calculate reasonable adhesion coefficients kadh for the different measurement techniques.

Název v anglickém jazyce

Comparison of Young’s Moduli Determined by Impulse Excitation Technique (IET), Dynamic Mechanical Analysis (DMA) and Tensile Test (TT)

Popis výsledku anglicky

To investigate elastic and viscoelastic mechanical behavior of glass bead reinforced thermoplastics, two composites were tested with Impulse Excitation Technique (IET), Dynamic Mechanical Analysis (DMA) and Tensile Test (TT). 3 point bending DMA tests of neatPolyamide 66 and Poly(butylene terephthalate) as well as their composites (30/40 wt-% and 20/30 wt-%, respectively) were performed in the temperature range 20 to 200 °C for the frequencies 1, 2, 5, 10, and 20 Hz. The theory of Williams, Landel and Ferry (WLF) allows forcomparison of bending moduli of frequency dependent “destructive” DMA measurements to non-destructive IET measurements in flexural mode by determining the eigenfrequency of the specimen at room temperature. Similarly, moduli of IET in longitudinal mode were comparedto Young´s moduli of TT at strain rates of 1, 10, and 100 %/min. Both comparisons provide moduli agreeing well with respect to standard deviations. Furthermore, a cube in cube modelapproach was used to model interfacial adhesion effects and to calculate reasonable adhesion coefficients kadh for the different measurement techniques.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings ICEM20 Experimental Mechanics in Engineering and Biomechanics

ISBN

978-989-54-7566-7

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

279-282

Název nakladatele

INEGI-FEUP

Místo vydání

Porto

Místo konání akce

Porto

Datum konání akce

2. 7. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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