Effects of CO2 laser parameters on quality of laser cut beech wood (Fagus sylvatica L) surface and extent of heat affect zone

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F25%3A106305" target="_blank" >RIV/60460709:41320/25:106305 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/62156489:43410/25:43926302

Výsledek na webu

<a href="https://link.springer.com/content/pdf/10.1007/s13196-024-00361-2.pdf?utm_source=clarivate&getft_integrator=clarivate" target="_blank" >https://link.springer.com/content/pdf/10.1007/s13196-024-00361-2.pdf?utm_source=clarivate&getft_integrator=clarivate</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s13196-024-00361-2" target="_blank" >10.1007/s13196-024-00361-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of CO2 laser parameters on quality of laser cut beech wood (Fagus sylvatica L) surface and extent of heat affect zone

Popis výsledku v původním jazyce

Laser cutting of wood offers precision and speed advantages over traditional methods. This study investigates the effect of CO2 laser processing parameters such as position of focal point, cutting speed, and gas pressure on cut surface quality of beech wood (Fagus sylvatica L.), measured in terms of color change and surface roughness. Additionally, the extent of the heat-affected zone was assessed using FTIR spectroscopy and PCA analysis of FTIR spectra. All color coordinates (L*, a*, and b*) decreased after laser cutting, with the most significant reduction in the lightness index (L*), indicating a darkening of the surface. The total colour change (triangle E*) was primarily affected by the change in lightness index (triangle L*) and the contribution of triangle a* and triangle b* to Delta E * was very less. The color change was observed to be the lowest when the focal point was positioned one-third from the top surface. Surface roughness increased as the position of focal point moved from the surface towards the center of the sample, suggesting a deterioration in surface quality. Conversely, cutting speed and exhaust gas pressure did not affect surface quality. FTIR spectroscopy revealed changes in specific functional groups due to heat generation during laser cutting. However, chemical degradation was localized to the cut surface and did not affect regions even 200 mu m below the cut surface.

Název v anglickém jazyce

Effects of CO2 laser parameters on quality of laser cut beech wood (Fagus sylvatica L) surface and extent of heat affect zone

Popis výsledku anglicky

Laser cutting of wood offers precision and speed advantages over traditional methods. This study investigates the effect of CO2 laser processing parameters such as position of focal point, cutting speed, and gas pressure on cut surface quality of beech wood (Fagus sylvatica L.), measured in terms of color change and surface roughness. Additionally, the extent of the heat-affected zone was assessed using FTIR spectroscopy and PCA analysis of FTIR spectra. All color coordinates (L*, a*, and b*) decreased after laser cutting, with the most significant reduction in the lightness index (L*), indicating a darkening of the surface. The total colour change (triangle E*) was primarily affected by the change in lightness index (triangle L*) and the contribution of triangle a* and triangle b* to Delta E * was very less. The color change was observed to be the lowest when the focal point was positioned one-third from the top surface. Surface roughness increased as the position of focal point moved from the surface towards the center of the sample, suggesting a deterioration in surface quality. Conversely, cutting speed and exhaust gas pressure did not affect surface quality. FTIR spectroscopy revealed changes in specific functional groups due to heat generation during laser cutting. However, chemical degradation was localized to the cut surface and did not affect regions even 200 mu m below the cut surface.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20502 - Paper and wood

Projekt

<a href="/cs/project/EF16_019%2F0000803" target="_blank" >EF16_019/0000803: Excelentní Výzkum jako podpora Adaptace lesnictví a dřevařství na globální změnu a 4. průmyslovou revoluci</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of the Indian Academy of Wood Science

ISSN

0972-172X

e-ISSN

0972-172X

Svazek periodika

22

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

67-77

Kód UT WoS článku

001380979200001

EID výsledku v databázi Scopus

—