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Research on Low-Cycle Fatigue Engineered Hybrid Sandwich Ski Construction

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13420%2F22%3A43897341" target="_blank" >RIV/44555601:13420/22:43897341 - isvavai.cz</a>

  • Nalezeny alternativní kódy

    RIV/60460709:41310/22:91374

  • Výsledek na webu

    <a href="https://www.mdpi.com/2073-4360/14/11/2278" target="_blank" >https://www.mdpi.com/2073-4360/14/11/2278</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3390/polym14112278" target="_blank" >10.3390/polym14112278</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Research on Low-Cycle Fatigue Engineered Hybrid Sandwich Ski Construction

  • Popis výsledku v původním jazyce

    This research is aimed at evaluating the effect of low-cycle fatigue on a newly designed hybrid sandwich ski structure to determine the changes that may occur due to cyclic loading and thus affect its use. This is primarily concerned with the fatigue behavior of the tested ski over different time intervals simulating its seasonal use and its effect on the mechanical properties of the ski, i.e., the durability and integrity of the individual layers of the sandwich ski structure. The ski was subjected to 70,000 deflections by moving the crossbar by 60 mm according to the ski deflection calculation in the arch. The results of the cyclic tests of the engineered ski design showed no significant changes in the ski during loading. The average force required to achieve deflection in the first 10,000 cycles was 514.0 4.2 N. Thereafter, a secondary hardening of the structure occurred during relaxation and the force required increased slightly to 543.6 1.7 N. The required force fluctuated slightly during the measurements and in the last series the value was 540.4 0.8 N. Low-cycle fatigue did not have a significant effect on the mechanical properties of the ski, there was no change in shape or visual delamination of the individual layers of the structure. From the cross-section, local delamination was demonstrated by image analysis, especially between the Wood core and the composite layers E-Glass biaxial and Carbon triaxial.

  • Název v anglickém jazyce

    Research on Low-Cycle Fatigue Engineered Hybrid Sandwich Ski Construction

  • Popis výsledku anglicky

    This research is aimed at evaluating the effect of low-cycle fatigue on a newly designed hybrid sandwich ski structure to determine the changes that may occur due to cyclic loading and thus affect its use. This is primarily concerned with the fatigue behavior of the tested ski over different time intervals simulating its seasonal use and its effect on the mechanical properties of the ski, i.e., the durability and integrity of the individual layers of the sandwich ski structure. The ski was subjected to 70,000 deflections by moving the crossbar by 60 mm according to the ski deflection calculation in the arch. The results of the cyclic tests of the engineered ski design showed no significant changes in the ski during loading. The average force required to achieve deflection in the first 10,000 cycles was 514.0 4.2 N. Thereafter, a secondary hardening of the structure occurred during relaxation and the force required increased slightly to 543.6 1.7 N. The required force fluctuated slightly during the measurements and in the last series the value was 540.4 0.8 N. Low-cycle fatigue did not have a significant effect on the mechanical properties of the ski, there was no change in shape or visual delamination of the individual layers of the structure. From the cross-section, local delamination was demonstrated by image analysis, especially between the Wood core and the composite layers E-Glass biaxial and Carbon triaxial.

Klasifikace

  • Druh

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

  • CEP obor

  • OECD FORD obor

    21001 - Nano-materials (production and properties)

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/EF18_069%2F0010045" target="_blank" >EF18_069/0010045: Vývoj nových nano a mikro povlaků na povrchu vybraných kovových materiálů - NANOTECH ITI II</a><br>

  • Návaznosti

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

Ostatní

  • Rok uplatnění

    2022

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název periodika

    Polymers

  • ISSN

    2073-4360

  • e-ISSN

    2073-4360

  • Svazek periodika

    14

  • Číslo periodika v rámci svazku

    11

  • Stát vydavatele periodika

    CH - Švýcarská konfederace

  • Počet stran výsledku

    14

  • Strana od-do

    2278-2292

  • Kód UT WoS článku

    000808947300001

  • EID výsledku v databázi Scopus

    2-s2.0-85131875298