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The effect of long-time moisture exposure and low temperatures on mechanical behavior of open-hole Cfrp laminate

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00349854" target="_blank" >RIV/68407700:21220/21:00349854 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://doi.org/10.1002/pc.26082" target="_blank" >https://doi.org/10.1002/pc.26082</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1002/pc.26082" target="_blank" >10.1002/pc.26082</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    The effect of long-time moisture exposure and low temperatures on mechanical behavior of open-hole Cfrp laminate

  • Popis výsledku v původním jazyce

    Carbon fiber composite laminates (CFRP) used in aerospace are operating under various environmental conditions. Parts are often exposed to moisture which slowly diffuses into the lam inate and forms internal stresses. During the flight, the aircraft is also exposed to low or elevated temperatures. The result is negative impact on composite performance due to formation of hygrothermal stresses. Understanding this phenomenon helps with prediction of the damage development which is vital for increasing the components service life. The open-hole CFRP laminates were conditioned in humid air at 70 °C/85% RH for 33,800 h and the effect of low temperatures on quasi-cyclic tension properties and fracture behavior was investigated. The mechanical tests on two types of CFRP laminate with different number and orientation of plies were performed under -55 °C. The material behavior during the testing was monitored by acoustic emission technique. The light optical microscopy and scanning electron microscopy were used for the identification of failure mechanisms. The study showed that the hygrothermal effect has significant impact on materials toughness reduction. The damage mechanisms and characteristic morphologic features are changing due to the matrix degradation and weakened fiber/matrix interface.

  • Název v anglickém jazyce

    The effect of long-time moisture exposure and low temperatures on mechanical behavior of open-hole Cfrp laminate

  • Popis výsledku anglicky

    Carbon fiber composite laminates (CFRP) used in aerospace are operating under various environmental conditions. Parts are often exposed to moisture which slowly diffuses into the lam inate and forms internal stresses. During the flight, the aircraft is also exposed to low or elevated temperatures. The result is negative impact on composite performance due to formation of hygrothermal stresses. Understanding this phenomenon helps with prediction of the damage development which is vital for increasing the components service life. The open-hole CFRP laminates were conditioned in humid air at 70 °C/85% RH for 33,800 h and the effect of low temperatures on quasi-cyclic tension properties and fracture behavior was investigated. The mechanical tests on two types of CFRP laminate with different number and orientation of plies were performed under -55 °C. The material behavior during the testing was monitored by acoustic emission technique. The light optical microscopy and scanning electron microscopy were used for the identification of failure mechanisms. The study showed that the hygrothermal effect has significant impact on materials toughness reduction. The damage mechanisms and characteristic morphologic features are changing due to the matrix degradation and weakened fiber/matrix interface.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/EF16_019%2F0000826" target="_blank" >EF16_019/0000826: Centrum pokročilých leteckých technologií</a><br>

  • Návaznosti

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

Ostatní

  • Rok uplatnění

    2021

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název periodika

    Polymer Composites

  • ISSN

    0272-8397

  • e-ISSN

    1548-0569

  • Svazek periodika

    42

  • Číslo periodika v rámci svazku

    7

  • Stát vydavatele periodika

    US - Spojené státy americké

  • Počet stran výsledku

    16

  • Strana od-do

    3603-3618

  • Kód UT WoS článku

    000641966200001

  • EID výsledku v databázi Scopus

    2-s2.0-85109386895