Nonwoven
The challenge: adjusting the basis weight, dtex, length and curl, as well as solid volume fraction, to optimize the mechanical properties, air permeability, relative permeability, and more
Nonwovens are textile, flat structures that are not produced by weaving or knitting, but obtain their cohesion through thermal, chemical or mechanical bonding. It is impossible to imagine everyday life and any industry that does not involve nonwovens. They are used in a wide variety of applications, such as hygiene products, surgical drapes or plasters in medical technology, seat cushions in the automotive industry, drainage layers or carpet supports in construction, in the clothing industry, and in various other technical applications.
Based on their manufacturing process, nonwovens can be divided into:
- Meltblown nonwovens and spunbonded nonwovens.
- Staple fiber nonwovens.
- Wetlaid nonwovens.
Mainly, thermoplastic polymers or natural fibers are used in nonwovens and their characteristics have a great influence on the properties of the nonwoven. Nonwovens can be adapted to their application in a variety of ways. To this end, optimization of the microstructure of the nonwoven at the filament or fiber level is of great advantage.
Here, the GeoDict software performs:
- Analysis of µCT scans of the nonwoven.
- Complete analysis of fiber parameters after the identification of each individual fiber through Artificial Intelligence.
- Exhaustive analysis of the pore space.
- Generation of three-dimensional models of the nonwoven, through input of important features such as fiber cross-section, layer structure, bonding points...
- Determination and prediction of properties of the nonwoven, such as behavior under mechanical load, permeability, tensile and flexural stiffness and thermal conductivity.
Creating a Digital Twin of a nonwoven
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More Information
Generate sophisticated Models
Your Nonwovens
- Different fiber cross sections, such as round,
elliptical, hollow or cellulose - User defined curvature, curliness, orientation,
anisotropy - Define gradients, e. g. along the thickness,
or distributions for all properties - Bond points, selection of bond point patterns
Analyse fiber distributions in a nonwoven
using Artificial Intelligence
- Analysis based on µCT-scan
- Fiber diameters
- Fiber orientation
- Fiber curvature and curliness
- Fiber lengths
- Layer wise analysis
Analyse Pores and Defects in a Nonwoven
- Basis weight distribution
- Analysis based on µCT-scan
- Pore identification
- Pores sizes
- Pore shapes
- Filament or fiber breakage
- Delamination
Predict Permeability of a Nonwoven
- Can be predicted on µCT-scans on GeoDict models
- Influence of compaction of textile can be considered
Simulate Mechanical Behavior
of Nonwoven
- Predict full stiffness tensor
- Simulate large deformations, such as
tensile, compression or bending tests - Include material laws for Elasticity,
Plasticity, Visco-plasticity, Failure,
and Damage - Derive materials laws for your fibers or
filaments automatically from tensile tests
In our experience, GeoDict with FiberFind-AI is the most powerful software for generating precise FE models for Abaqus from µCT scans.Transferring nonwoven data into highly accurate fibre models for deformation simulations is a matter of minutes, not hours or days!
Dr.-Ing. Dipl.-Math. techn. Gunnar Possart, Friedrich-Alexander-Universität Erlangen-Nürnberg
The GeoDict solution for nonwoven
In addition to GeoDict Base, the GeoDict package includes all necessary modules for the Research & Development of nonwovens.
Module recommendations
| Image Processing & Analysis | ImportGeo-Vol | |||||
| Characterization & Analysis | GrainFind-AI | FiberFind-AI | PoroDict + MatDict | |||
| Modeling & Design | GrainGeo | FiberGeo | GrainFind-AI | WeaveGeo | ||
| Simulation & Prediction | DiffuDict | ConductoDict | FlowDict | ElastoDict | AddiDict | SatuDict |
Which modules are the best fit for you depends on the nature of your application.
