Movies
Below you find an overview of some nice videos from the six Materials Technology research groups. The videos are categorized by research group.
Polymer Technology
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Foam
FE simulation of compression of a foam structure with neo-Hookean material behaviour (left) and viscoplastic materials behaviour...
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Honeycomb
FE simulation of compression of a polycarbonate honeycomb structure
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Semicrystalline polymer during uniaxial tension
Predicted texture evolution in a semicrystalline polymer during uniaxial tension.
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Deformation of RVE Polycarbonate
Deformation of a representative volume element of voided polycarbonate. Green is elastic, red is plastic. The deformation spreads...
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Deformation of RVE Polystyrene
Deformation of a representative volume element of voided polystyrene. Bleu is elastic, coloured is plastic. Note the localization...
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Deformation of RVE Polystyrene with rubber shell-filled voids
Filling the voids in polystyrene with load-bearing rubber shells that support the stretching filaments gives enough extra strain...
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Twin screw extrusion
The start of mixing optimization with the "Mapping Method" is an accurate computation of the velocity field. The lack of...
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Distributive mixing in a 2D cavity flow
This movie shows the deformation of two blobs in a rectangular cavity. The mixing protocol consists of a periodic motion of the...
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Crystallization
Crystallization of a melt during injection moulding. Red is spherulites, blue is flow induced, anisotropic crystals (shis-kebabs)....
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Mixing: Kenics mixer with correctly oriented blades
Lagrangean view of the development of stratified structures in a Kenics mixer, using the so-called Mapping Method. The blades have...
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Mixing: Kenics mixer with correctly oriented blades
Lagrangean view of the development of stratified structures in a Kenics mixer, using the so-called Mapping Method.The blades are...
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Rain
A typical Dutch problem: nucleation, grow, gravity induced flow, coalescense on the umbrella, flow of the umbrella, break-up and...
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Flow past a confined excentric cylinder and in our cross-slot device
Flow past a confined cylinder and in our real 2D cross-slot device with mercury and laser lighting for improved resolution. What...
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Binodal decomposition
Binodal decomposition: growth of a supercritical nucleus, starvation of a subcritical nucleus, depletation around the column...
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Spinodal decompostion
Spinodal decompostion. (Diffuse interface method: Cahn-Hilliard, Ginzburg-Landau)
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3D spinodal decomposition
Phase separation (spinodal decomposition) in a 3D cube with quiescent conditions (Cahn number (C) = 0.04, Peclet (Pe) = 25....
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Spinodal decomposition under shear
Spinodal decomposition under shear
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Fireworks1
Rather interesting blob deformation and breakup. The phenomena shown are nor explained yet, but may be due to Maragoni (surface...
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Fireworks2
The systems of continuous phase:silicon oil, disperse phase: PEO in water (sometimes SDS -sodium docecylsulphate- is added as a...
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Fireworks3
The systems of continuous phase:silicon oil, disperse phase: PEO in water (sometimes SDS -sodium docecylsulphate- is added as a...
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Drop breakup 1
Drop deformation and breakup in shear flow (u=y) at Ca=0.45 and viscosity ratio 1. After the initial deformation the flow stops....
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Drop breakup 2
The breakup stage - after the flow stops (see the previous movie).
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Drop coalescence
Drop-to-drop interaction in shear flow (u=y) at Ca=0.25 and viscosity ratio 1. The initial vertical offset is 0.5 from the drop...
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Foam drop formation
Formation of a foam drop with volume fraction up to 98% by an expansion of 8 inner drops: Outer drop (Left); Inner drops (Right). ...
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Foam drop structure 2
Crossection of a foam drop containing 8 inner drops at volume fraction 95% in equilibrium: The interfaces behind the cross plane...
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Foam drop in shear flow (4 drops)
Foam drop containing 4 equal-sized inner drops at volume fraction 95% in simple shear flow (u=y), Ca=0.2: Outer drop (Left, Up);...
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Foam drop in shear flow (8 drops)
Foam drop containing 8 (4x10.25% and 4x13.5%) inner drops at volume fraction 95% in simple shear flow (u=y), Ca=0.2: Outer drop...
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Viscoelastic effects in Polymer Coextrusion
Viscoelastic effects in Polymer Coextrusion
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Mechanics of Materials
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Miniature mixed mode bending setup
Cohesive zone (CZ) approach is often used to describe the interface behavior in finite element (FE) predictive models to minimize...
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Self adaptive cohesive zone
The movie shows the opening profile of a cohesive zone modelled with 10 self-adaptive enriched elements in which the kink point of...
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Brain slice
Displacement field obtained with digital image correlation on a slice of brain tissue subjected to an acceleration pulse of...
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3D analysis of aluminum extrusion
Aluminum extrusion die
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3D velocity analysis of aluminum extrusion:
Velocity in the die
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Delamination in an IC back-end stack
A representative volume element of the back-end stack of an Integrated Circuit is loaded to failure. Delamination occurs at the...
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Fine-blanking simulation
Blanking is a forming process which is used to cut product out of sheet metal. Fine-blanking uses an additional counterpunch to...
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Score forming simulations
A knife is used to produce a score (indentation) in thin sheet metal. The simulation uses a coupled plasticity-damage model to...
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Simulation of Arcan test - crack growth and load-displacement response
Mixed-mode loading of a pre-cracked aluminium specimen results in crack growth at an angle. The growth direction and speed are...
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Simulation of Arcan test - evolution of damage and stress 2
Mixed-mode loading of a pre-cracked aluminium specimen results in crack growth at an angle. The growth direction and speed are...
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Tensile test on steel specimen
A dogbone-specimen made out of steel sheet material is loaded in tension. Plastic deformation localises in a neck and a crack is...
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Soft Tissue Biomechanics & Engineering
Orthopaedic Biomechanics
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Evaluation of cell damage in Engineered Muscle Tissue
This movie shows the development of cell damage in an engineered muscle tissue construct. Living myofibres are stained with...
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Free swelling of 3D intervertebral disc model
The 3D FE-model (left) simulates the free swelling experiment (right) of the intervertebral disc. Usually (body), the disc is...
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Cardiovascular Biomechanics
Structure and Rheology of Complex Fluids
Microsystems
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Artificial Cilia for Active Micro-Fluidic Mixing
Top view of artificial cilia, actuated in air. The length and the width of the individual cilia are 100 渭m and 20 渭m,...
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Swarm of rotating particle chains
This movie depicts the influences of field gradients on a collection of vertical rotating magnetic particle chains forming...
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Disaggregation of micro-particle clusters
This movie depicts the initialization of a magnetic particle distribution using a vertical magnetic field orthogonal to the fluid...
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Chaotic fluid mixing
This movie depicts the different steps of image analysis to evaluate the mixing of a water-dye interface actuated by a rotating...
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Rotating magnetic particle chain in a viscous fluid
This movie depicts the rotational dynamics of an experimental 12-bead chain from rigid behavior to the third breakup transition.
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Longer cilia formation
A sheet of magnetic artificial cilia with length of tens of microns actuated by external magnetic field in water
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Magnetic artificial cilia
200 micrometers long magnetic artificial cilia actuated by external magnetic field at different frequencies, recorded at high...
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