Mechanical Characterization & Modeling

Modeling, Simulation and Testing

This field of competence covers the experimental and simulative analysis of materials, structures, and joints, especially influenced by strain rate and temperature. Key aspects are the evaluation of material properties (parameters, stress-strain-curves,…) and the transfer of this behavior to validated material models for FE simulation. Within these activities, testing procedures are newly developed or optimized. The improvement of energy absorption and structural integrity in tension and bending loaded composite structures and joints is an additional focus in this competence field.

Dr.-Ing.

Sebastian Schmeer

Deputy Research Manager Component Development & Manager Mechanical Characterization & Modeling

Special Expertise: Mechanical characterization of materials, components and joints (strain rate & temperature variable), DIN/ISO standardization, material behavior under multi-axiality (tension/compression and torsion), FEM simulation (mechanical), material model parameterization, validation of FE simulation models by experimental investigations, structural integrity, metal-fiber reinforced composites

Telephone: +49 631 2017 322

sebastian.schmeer@leibniz-ivw.de

Vita

Special Expertise

Modern testing equipment and technologies:
- 2 high speed tension machines: material characterization up to 160 kN testing force at velocities of 0.1 mm/s to 20 m/s and temperatures from –100°C to 250°C
- Crash rig up to 22 kJ impact energy for testing of substructures
- Drop tower for impact tests up to 3 kJ impact energy
- Local optical deformation measurement (DIC) for evaluating of material properties and valdiating of simuations
- 3D-ultra-high-speed pictures up to 1 Million Hz frames per second
- 3D-ultra-high-resolution pictures up to 40 MPix
Mechanical characterization of materials using modern high-performance measurement technology
Validation of FE models for materials
FE modeling with ABAQUS and LS-Dyna

Materials and Questions

Typical Materials

GFRP
CFRP
AFRP
Hybrid materials
Continuous and discontinuous fiber reinforcement

Typical Questions

Will you support us in creating FE-parameter sets for FE-simulations or with validating simulation results?
Are you able to test materials and structures also under the influence of temperature and varying test velocities?
How can structures made of FRP absorb energy effectively and show a good structural integrity even under tension?

Economic Sectors	Applications (Examples)
Automotive	Bumper beams, crash absorber, interior parts
Aeronautics & Space	Joints, beams, struts
Engineering	Highly accelerated machine parts, housings

Projects in this field

AVK Expert Task Force

Continuous Fiber Reinforced Thermoplastics within the Automotive Industry

Standardization of continuous fiber reinforced thermoplastics applications within the automotive industry

Chara-TPC

Characterization Methods for Thermoplastic Composites

Development of new, efficient characterization methods for complex loading cases of CFRTC

for generating comparable material properties

Design of Injection Molded Plastic Gears

This project aims at the development of a guideline for the suitable design of plastic gears, considering function, material and technology, using a physical and experimentally validated approach.

DFG-SCFRP

Increased energy absorption and an improved structural integrity of FRP structures in case of critical tensile and bending load

Efficient Fast Conditioning

Efficient Fast Conditioning and Storage of Hygroscopic Materials

The project investigated whether and how acoustic signals measured in quasi-static tensile tests can be correlated with fatigue strength of laminates.

Fiber-reinforced bipolar plates for fuel cells

Development of fiber-reinforced compound film bipolar plates for compact lightweight fuel cells

This project aims at the incorporation of carbon fibers into compound foils to increase the power density of hydrogen fuel cells

International Standardization

International Standardization of Characterization Methods

International organizational team for a new benchmark study on "virtual" permeability measurement

Mechanical Characterization

of CFRP Hydrogen Tank Segments

New Pantograph Concepts for the eHighway System

TopTape

Tapewickelprozess mit integriertem Qualitätsprüfprogramm

Ziel dieses Forschungsprojektes ist die Automatisierung der bisher manuellen Arbeitsschritte, die Entwicklung von vereinfachten Prüfmethoden zur effizienten Parameteroptimierung und die Erweiterung der Prozessüberwachung durch eine online- Qualitätskontrolle mit systematischer Erfassung und Überwachung der qualitätsrelevanten Regelungsund Prozessparameter.

TriPhaHyb

Stahl-Glas-Thermoplast-Faserhybridverbundwerkstoffe

Publications from the IVW papers in this field of competence

Rehra, J.(2023)
Beitrag zur Beschreibung des mechanischen Materialverhaltens von Metall-Faser-Hybrid-Verbund-Werkstoffen am Beispiel von stahl- und kohlenstofffaserverstärktem Epoxidharz
- Download Abstract
Donhauser, T.(2020)
Beitrag zur Auslegung hochbeanspruchter Bauteile aus Faser-Thermoplast-Verbunden
- Download Abstract
Hannemann, B.(2018)
Multifunctional metal-carbon-fibre composites for damage tolerant and electrically conductive lightweight structures
- Download Abstract
Bergmann, T.(2017)
Beitrag zur Charakterisierung und Auslegung zugbelasteter Energieabsorberkonzepte mittels experimenteller, ananlytischer und numerischer Methoden
- Download Abstract
Scheliga, D.(2013)
Experimentelle Untersuchung des Rissausbereitungsverhaltens von nanopartikelverstärktem Polyamid 66
- Download Abstract
Voll, N.(2010)
Experimentelle Untersuchung, Simulation und Materialmodellierung von edelstahltextilverstärkten Langfaserthermoplasten
- Download Abstract
Schmeer, S.(2009)
Experimentelle und simulative Analysen von induktionsgeschweißten Hybridverbindungen
- Download Abstract
Meichsner, A.(2009)
Herstellung, Charakterisierung, Modellierungsansätze und Simulation von edelstahltextilverstärktem Polypropylen (ETV-PP) und Langglasfaser-thermoplasten mit PP-Matrix (ETV-PP/GF)
- Download Abstract
Bosseler, M.(2009)
Beschreibung des orthotrop viskoelasto-plastischen Verhaltens langglasfaserverstärkten Polypropylens. Versuchskonzept und FE-Simulation
- Download Abstract
Heimbs, S.(2008)
Sandwichstrukturen mit Wabenkern: Experimentelle und numerische Analyse des Schädigungsverhaltens unter statischer und kurzzeitdynamischer Belastung
- Download Abstract
Imbsweiler, D.(2001)
Experimentelle Untersuchung und numerische Simulation des Crashverhaltens von SMC-Strukturen
- Download Abstract
Dehn, A.(2001)
Experimentelle Untersuchung und numerische Simulation des Crashverhaltens gewebeverstärkter Thermoplaste unter Temperatureinfluss
- Download Abstract
Huisman, M.(2001)
Experimental and numerical investigations for the prediction of the crashworth-iness of layered quasi-isotropic thermoplastic composites (TPC's)
- Download Abstract
Schluppkotten, J.(2000)
Ein Beitrag zur methodischen Integration von neuen Werkstoffen in die Fahrzeugcrashberechnung
- Download Abstract

External Publications "Mechanical Characterization & Modeling"

Use of recycled carbon staple fibers in an advanced thermoforming process and analysis of its crash performance

Advanced Manufacturing: Polymer & Composites Science (2020), DOI: https://doi.org/10.1080/20550340.2020.1739402

Calculation of highly stressed components made of carbonfiber-reinforced polyamide-6

https://doi.org/10.1016/j.compstruct.2021.114830

Experimental characterization and phenomenological modeling of nonlinear viscoelasticity, plasticity and damage of continuous carbon fiber-reinforced thermoplastics

https://doi.org/10.1016/j.compositesb.2023.110734

Influence of anodization of aluminum 2024 T3 for application in aluminum/Cf/ epoxy laminate

https://doi.org/10.1016/j.compositesb.2019.107718

Characterization and modeling of continuous carbon fiber-reinforced polycarbonate under multiaxial loads

https://doi.org/10.1016/j.compositesb.2022.109740

Relation Between Interface Geometry and Tensile Shear Strength of Ultrasonically Welded Joints

https://doi.org/10.1007/s11665-023-08325-2

Structural Optimization of Locally Continuous Fiber-Reinforcements for Short Fiber-Reinforced Plastics

https://www.mdpi.com/2504-477X/5/5/118/htm

Metal/Carbon-Fiber Hybrid Composites—Damage Evolution and Monitoring of Isothermal Fatigue at Low and Elevated Temperatures

https://www.mdpi.com/2504-477X/6/3/67

Development of multi-material hybrid yarns consisting of steel, glass and polypropylene filaments for fiber hybrid composites

https://doi.org/10.1177/00405175231179759

Enhanced Low-Velocity Impact Properties for Resin Film Infusion-Manufactured Composites by Flow-Control Approach

https://www.mdpi.com/2073-4360/13/19/3431

Describing the Material Behavior of Steel and Carbon Fiber Reinforced Composites Using a Combined Damage-Plasticity Approach

https://doi.org/10.3390/jcs6080235

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