Aplikace mikrotomografie v analýze kvality potahů autosedaček
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Date
2015-06-09
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Abstract
Táto diplomová práca je zameraná na využitie počítačovej mikrotomografie (mikroCT) v textilnej metrológii. Zaoberá sa hodnotením kvality autosedačiek pomocou nedeštruktívneho mikroCT zariadenia. V teoretickej časti je popísaný vývoj autosedačiek, fyziologický komfort textílií a jeho súvislosť s pórovitosťou. Súčasťou teoretickej časti je taktiež história röntgenového (RTG) žiarenia, princíp mikrotomografie, ďalej sú popísané parametre snímania a rekonštrukcie, výsledné parametre analýz a využitie tohto zariadenia v textilnej metrológii. V experimentálnej časti sú popísané testované materiály pre autosedačky, a to dva typy distančných pletenín, polyuretánová (PU) pena a netkaná textília. Z dôvodu simulácie používania autosedačiek, materiály boli cyklicky stlačované 10kPa a 20kPa. Testované materiály boli naskenované pred a aj po cyklických stlačovaniach pomocou zariadenia SkyScan 1272 so zameraním na hodnotenie zmien štruktúr poťahov používaním. V súvislosti s tým bol sledovaný vplyv zmien štruktúr na fyziologický komfort. Ďalšie fyziologické vlastnosti (súvisiace s pórovitosťou) materiálov ako priedušnosť a tepelná vodivosť, boli vyhodnotené klasickými normovanými metódami. Kvalita poťahov autosedačiek bola hodnotená podľa údajov získaných 3D analýzou materiálov.
This diploma thesis is focused on the application of computed microtomography (microCT) in the textile metrology. It deals with the evaluation of the quality of car seats using non-destructive microCT equipment. The theoretical part describes the development of car seats, physiological comfort of textiles and its relationship with porosity. In the theoretical part is also included the history of the X-ray radiation, the principle of the microtomography, there are also described the parameters of scanning and reconstruction, the final parameters of the analysis and the application of this equipment in textile metrology. The experimental part describes the tested car seat materials, which are spacer knitted fabrics (two types), polyurethane (PU) foam and a nonwoven fabric. Due to the simulation of using car seats, materials were cyclically compressed by 10 kPa and 20 kPa. The test materials were scanned before and after cyclic compression using the SkyScan 1272 equipment to assess the changes in the structure of car seat covers by using them. In regard to this matter, the impact of changes was studied in relationship with physiological comfort. Other physiological characteristics (porosity related) of materials such as breathability and thermal conductivity were evaluated by conventional standard methods. The quality of car seat covers was evaluated according to the data acquired by 3D analysis of materials.
This diploma thesis is focused on the application of computed microtomography (microCT) in the textile metrology. It deals with the evaluation of the quality of car seats using non-destructive microCT equipment. The theoretical part describes the development of car seats, physiological comfort of textiles and its relationship with porosity. In the theoretical part is also included the history of the X-ray radiation, the principle of the microtomography, there are also described the parameters of scanning and reconstruction, the final parameters of the analysis and the application of this equipment in textile metrology. The experimental part describes the tested car seat materials, which are spacer knitted fabrics (two types), polyurethane (PU) foam and a nonwoven fabric. Due to the simulation of using car seats, materials were cyclically compressed by 10 kPa and 20 kPa. The test materials were scanned before and after cyclic compression using the SkyScan 1272 equipment to assess the changes in the structure of car seat covers by using them. In regard to this matter, the impact of changes was studied in relationship with physiological comfort. Other physiological characteristics (porosity related) of materials such as breathability and thermal conductivity were evaluated by conventional standard methods. The quality of car seat covers was evaluated according to the data acquired by 3D analysis of materials.
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Subject(s)
počítačová mikrotomografia (mikroCT), štruktúra poťahu autosedačky, 3D analýza, fyziologický komfort, cyklické stlačovanie, computed micro-tomography (microCT), structure of car seat covers, 3D analysis, physiological comfort, cyclical compression