Název: Three-dimensional characterization of polymer foams using X-ray dark-field imaging
Autoři: Senck, S. ; Plank, B. ; Gusenbauer, C. ; Salaberger, D. ; Vavřík, Daniel ; Santer, W. ; Kastner, J.
Typ dokumentu: Příspěvky z konference
Konference/Akce: Conference on Industrial Computed Tomography (iCT 2017) /7./, Leuven (BE), 20170207
Rok: 2017
Jazyk: eng
Abstrakt: Due to the low cost, the ease of processing, and excellent material properties, polymer foams are used in various applications, e.g. packaging, building and construction, furnitures and bedding, and the automotive and aerospace sector. The mechanical response of polymer foams is primarily influenced by density and morphology. While foam density can be determined with high precision, cell morphology is more difficult to determine since the size distribution of foam cells differs in three dimensions. However, using conventional methods, e.g. optical light microscopy or scanning electron microscopy, it is very difficult to obtain three-dimensional information and to differentiate between the strut system and cell walls. An alternative for the three-dimensional characterization of foam morphology is micro-computed tomography (XCT). But even non-destructive techniques like XCT are not able to characterize anisotropic foams if the thickness of single struts and cell walls is below the physcial resolution of the respective XCT system. In this contribution we therefore investigate different polymeric foam samples using a Talbot-Lau grating interferometer XCT (TLGI-XCT) system. We show that the obtained darkfield contrast images show a high contrast and a strong signal at struts and cell walls, facilitating the segmentation of foam cells in various examples.
Klíčová slova: dark-field imaging; foam; micro-computed tomography; Talbot-Lau grating interferometer XCT
Číslo projektu: ATCZ38
Zdrojový dokument: 7th Conference on Industrial Computed Tomography (iCT 2017), ISSN 1435-4934

Instituce: Ústav teoretické a aplikované mechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na externích webových stránkách.
Externí umístění souboru: http://www.ndt.net/events/iCT2017/app/content/Paper/11_Senck.pdf
Původní záznam: http://hdl.handle.net/11104/0270740

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-373344


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav teoretické a aplikované mechaniky
Konferenční materiály > Příspěvky z konference