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Investigation of the fractal properties of aerogels by diffusion-limited aggregation models

Abdusalamov, Rasul and Itskov, Mikhail and Milow, Barbara and Reichenauer, Gudrun and Rege, Ameya Govind (2019) Investigation of the fractal properties of aerogels by diffusion-limited aggregation models. Kassel University Press. 8th GACM Colloquium on Computational Mechanics, 28.-30. Aug. 2019, Kassel, Deutschland. DOI: 10.19211/KUP9783737650939 ISBN 978-3-86219-5093-9

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Abstract

Aerogels are highly porous materials characterized by low thermal conductivities and sound velocities. Most aerogels exhibit fractal morphology which strongly influences their mechanical properties. Diffusion-limited aggregation (DLA) and diffusion-limited cluster aggregation (DLCA) models [7] best describe the properties of silica aerogels [3, 6]. In our work, these models are implemented to characterize the fractal features and mechanical properties of silica aerogels. To this end, the model results are first validated by comparison with the fractal exponents derived from experimental small angle X-ray scattering (SAXS) data. Furthermore, the application of such aggregation models to describe the mechanical properties of these aerogels is studied by importing the generated structure into a finite element analysis (FEA) tool.

Item URL in elib:https://elib.dlr.de/128943/
Document Type:Conference or Workshop Item (Speech)
Title:Investigation of the fractal properties of aerogels by diffusion-limited aggregation models
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Abdusalamov, RasulRWTH Aachen UniversityUNSPECIFIED
Itskov, MikhailRWTH Aachen UniversityUNSPECIFIED
Milow, BarbaraBarbara.Milow (at) dlr.dehttps://orcid.org/0000-0002-6350-7728
Reichenauer, GudrunZAE BayernUNSPECIFIED
Rege, Ameya GovindAmeya.Rege (at) dlr.dehttps://orcid.org/0000-0001-9564-5482
Date:August 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.19211/KUP9783737650939
Page Range:pp. 219-222
Editors:
EditorsEmail
Gleim, TobiasUNSPECIFIED
Lange, StephanUNSPECIFIED
Publisher:Kassel University Press
ISBN:978-3-86219-5093-9
Status:Published
Keywords:silica aerogel, DLCA, model, SAXS
Event Title:8th GACM Colloquium on Computational Mechanics
Event Location:Kassel, Deutschland
Event Type:international Conference
Event Dates:28.-30. Aug. 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - NGC Fahrzeugstruktur II
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Aerogels and Aerogel Composites
Deposited By: Rege, Dr. Ameya Govind
Deposited On:06 Nov 2019 15:54
Last Modified:06 Nov 2019 15:54

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