high performance modular testing
Your expert regarding testing and simulation solutions specialized on material engineering and battery applications as well as product, method and software development.
mechanical testing systems
Materials testing is a respected and established branch of engineering that has improved its significance over the last years immensely. The wide range of materials and their application has led to a variety of new problems and their solutions. More and more properties need to be investigated as well as stochastic evaluation approaches need to be determined and all needs to be available in a suitable and structured manner.
The brand-new LINOVIS® testing system is the most comprehensive electro-dynamic testing machine up to date. With its wide testing application, from static to highly dynamic testing for almost all materials at unmatched precision and with longevity in mind. The system is, of course, fully compatible with our VALIMAT® software solution via the built-in touch control panel.
IMPETUS® is our efficient economic stand-alone solution for dynamic materials
testing. It is suitable for almost all polymeric materials, composites, foams and
light metals. With its desktop-size and no prerequisites necessary, its use-cases
are almost limitless.
Adding in our software solution VALIMAT® and our well-established Autofit-process
and nothing stands in your way of generating fully automated crash-focused
material cards!
material testing, cards and services
We offer a variety of testing and material modelling services for polymeric materials,
composites, foams and light metals.
In addition we are offering product development services with a strong emphasis on plastics and composite engineering.
material testing
Our materials testing service includes the evaluation of static and dynamic mechanical and thermal properties for almost all polymeric materials, composites, foams and light metals. Various load cases such as 3-point-bending, tensile testing, puncture testing etc. are considered in our testing scope to account for tension/compression assymetry, stress triaxiality and anisotropic yield surfaces. We are fully equipped with environmental chambers for testing from -40°C up to 90°C and various states of conditioning. For more information, please visit our extensive testing document or contact us directly.
material cards
Our industry-renowned material card generation service is a carefree all-in-one solution: from granulate to the final validated material card. We offer standardized packages for thermoplastics, short and long fiber-reinforced plastics as well as foams and composites. Our capabilities include the calibration of a huge variety of material models in LS-Dyna, Pam-Crash and Abaqus with different levels of complexity. For more information take a look at our extensive material packages or contact us directly.
Standardized material characterization packages for your individual material class:
| isotropic thermoplastics | fiber-reinforced plastics | foamed plastics | composite plastics |
|---|
We provide the following services for isotropic polymers:
Hardening - based on 3-point bending test setups conducted at 2 static and 3 dynamic velocities up to 4.4 m/s
triaxiality is not considered
failure is not considered
Isotropic-elastic, visco-plastic material model vonMises yield surface with associated flow rule
Hardening - based on 3-point bending test setups conducted at 2 static and 3 dynamic velocities up to 4.4 m/s
Triaxiality - tension/compression assymetry depicted
Damage-Failure - failure set to mean max. principal strain with strain rate dependency of conducted tests
Isotropic-elastic, visco-plastic material model vonMises yield surface with associated flow rule
Hardening - based on 3-point bending test setups conducted at 2 static and 3 dynamic velocities up to 4.4 m/s
Triaxiality - based on tensile testing tension/compression assymetry
Damage-Failure - failure set to mean max. principal strain with strain rate dependency of conducted tests
Isotropic-elastic, visco-plastic material model Drucker-Prager/complex yield surface with a non associated flow rule
Hardening - based on 3-point bending test setups conducted at 2 static and 3 dynamic velocities up to 4.4 m/s
Triaxiality - based on tensile testing tension/compression assymetry
Damage-Failure - Fully adjusted triaxiality curve with strain rate dependency and validation on all conducted tests
Isotropic-elastic, visco-plastic material model Drucker-Prager/complex yield surface with a non associated flow rule
Hardening - based on 3-point bending test setups conducted at 1 static and 1 dynamic velocity in averaged orientation up to 4.4 m/s
Triaxiality - based on tensile testing tension/compression assymetry, research on compression
Damage-Failure - Fully adjusted triaxiality curve with strain rate dependency and validation on all conducted tests
Isotropic-elastic, visco-plastic material model Drucker-Prager/complex yield surface with a non associated flow rule
We provide the following services for fiber reinforced polymers:
Hardening - based on 3-point bending test setups conducted at 2 static and 6 dynamic velocities in different orientations up to 4.4 m/s
0°,90° and averaged card provided
failure is not considered
anisotropic-elastic, visco-plastic material model vonMises yield surface with associated flow rule
Hardening - based on 3-point bending test setups conducted at 2 static and 6 dynamic velocities in different orientations up to 4.4 m/s
0°,90° and averaged card provided
Damage-Failure - failure set to mean max. principal strain of conducted tests
Isotropic-elastic, visco-plastic material model vonMises yield surface with associated flow rule
Hardening - based on 3-point bending test setups conducted at 3 static and 5 dynamic velocities in different orientations up to 4.4 m/s
anisotropic
Damage-Failure - failure set to mean max. principal strain with strain rate dependency of conducted tests
anisotropic-elastic, visco-plastic material model
Hardening - based on 3-point bending test setups conducted at 3 static and 7 dynamic velocities in different orientations up to 4.4 m/s
anisotropic
Damage-Failure - Fully adjusted triaxiality curve with strain rate dependency and validation on all conducted tests
Micro-mechanics based material model based on filler and matrix properties
Hardening - based on 3-point bending test setups conducted at 1 static and 1 dynamic velocities in averaged orientation up to 4.4 m/s
anisotropic
Damage-Failure - Fully adjusted triaxiality curve with strain rate dependency and validation on all conducted tests
Micro-mechanics based material model based on filler and matrix properties
We provide the following services for foams:
Hardening - based on compression test setups conducted at 2 static and 3 dynamic velocities up to 4.4 m/s
failure is not considered
Hardening - based on compression test setups conducted at 2 static and 3 dynamic velocities up to 4.4 m/s and 1 static tensile test at 1 mm/s
Damage-Failure - failure set to mean max. principal strain with strain rate dependency of conducted tests
We provide the following services for composites:
anisotropic
stress based failure criterion
anisotropic
stress based failure criterion
product development
Our validated solutions in the area of product development have fullfilled the desires of countless companies in the field of medicine, automotive, construction etc. With our holistic understanding of problems and finding efficient customer oriented solutions we are offering a modular service and consulting. Our in-house prototyping and testing adds to our comprehensive service and leads to successful products. Contact us for more information!
battery testing and simulation
Our newest addition of products and services and the latest business unit of 4a engineering.
battery testing
Offering a broad spectrum of testing possibilities relating to electrical,
thermal and mechanical properties of battery cells, cell stacks and modules we
strife to improve battery performance, cost and safety. (i.e. Nail-penetration, overcharge, thermal runaway)
For
more information on the testing equipment, accessories as well as services contact us directly!
battery simulation
Translating our extensive experience in the field of material modelling, we are
offering multiphysics simulations and validated models of battery cells, cell stacks, modules and packs
with an emphasis on crash and abuse, as well as on performance and life time.
For more information feel free to contact us directly!
software solutions
Our software solutions aim at increasing productivity in the fields of data storage and handling, validation and automated calibration of multiphysical models.
Our stand-alone software VALIMAT® combines test- and model data and unites them
into an efficient database format for material characterization. Measurement
data can be imported from any testing device and used for the efficient parameterization of a huge variety of material models for LS-Dyna, Pam-Crash and
Abaqus. Our fully automated AutoFit process will then take care of creating
from simple to complex material cards ready to use for your FEM application!
Together with our IMPETUS® dynamic testing
machine VALIMAT® offers an all-in-one solution for validated material card generation.
For more information please contact us
directly!