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DFG CRC/Transregio 39 PT-PIESA
SP C06

Materialcharakterisierung und numerische Simulation von adaptiven Werkstoffverbunden

R. Lerch, S. J. Rupitsch
  1. Aims
  2. Results
  3. Methods
  4. Publications
  5. Contact


Characterization of all materials involved in compound

  • Parameter catalog of active and passive materials
  • Consideration of various influences
    • Frequency
    • Temperature
    • Mechanical prestress
    • Continuous load

Simulation platform for functional system design

  • Based on finite element simulations
  • Consideration of excitation and analysis electronics
  • Applications of adaptive compounds
    • Structural health monitoring
    • Energy harvesting
    •  ….

Functional control of adaptive material compounds during production

  • Use of as less characteristic measurands as possible
    • Electrical impedance
    • Mechanical displacement
  • Design of inspection guidelines



  • Electrical Impedance of two independent Transducers T1 and T2
    • Simple measurement technology
    • Setup inside environmental chamber






  • Temperature dependence of material parameters


Passive materials

  • Vibration transfer function for plate-shaped samples
    • Three different clamping conditions
    • Setup inside environmental chambe






  • Frequency and temperature dependent material parameters
    • Elasticity modulus, damping
    • Example: GF-PA6 (TP B04


Efficient Modelling

  • Homogenization




  • Application pFEM: up to 10x faster

Large Signal Performance




PT-PIESA-Standard Panels

  • Uniform measurement enviroment
    • Measurement von impendace, deflection, force Messung von Impedanz, Auslenkung, Kraft
    • Example: GF-PA6 (TP B04)
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Inverse Method

  • Piezoceramics
    • Frequency dependency
    • Mechanical prestress
  • Passive materials
    • Transversal isotropic material properties
  • Adaptive material compounds
    • Essential material properties of piezo actuators and compounds
    • Material parameters of homogenized models
  • Functional design of compounds
    • Optimization considering specific targets

Finite element simulation

  • Higher order finite elements
    • Modeling of passive material composites
    • Modeling of adaptive material compounds
  • Hybrid methods
    • Combination of fem and simulation of analog electric circuits
    • Combination of simulation and measurement
  • Uniform measurement environment for PT-PIESA-Uniform Plate
    • Characterization of long-term stability of adaptive compounds
    • Identification of material properties
    • Development of test methods for series production
  • Force measuring station
    • Extension to multidimensional stress conditions
  • Oscillation tests with various clamping
    • Passive material composites
  • Parameter identification
    • Adaptive material compounds
    • Energy harvesting


Reviewed Publications

[Sut10] Sutor A, Rupitsch SJ, Lerch R (2010)
A Preisach-based hysteresis model for magnetic and ferroelectric hysteresis. Appl Phys A 100:425-430
[Wol11] Wolf F, Sutor A, Rupitsch S J, Lerch R (2011)
Modeling and measurement of creep- and rate-dependent hysteresis in ferroelectric actuators. Sens Actuators A 172(1):245-252
[Kla12] Klassen A, Rübner M, Ilg J, Rupitsch SJ, Lerch R, Körner C, Singer RF (2012)
Influence of the fabrication process on the functionality of piezoceramic patch transducers embedded in aluminum die castings. Smart Mater and Struct 21(11):115014(11pp)
[Rup12] Rupitsch SJ, Wolf F, Sutor A, Lerch R (2012) Reliable modeling of piezoceramic materials utilized in sensors and actuators. Acta Mech 223(8):1809-1821
[Wol12] Wolf F, Sutor A, Rupitsch SJ, Lerch R (2012)
A generalized Preisach approach for piezoceramic materials incorporating uniaxial compressive stress. Sens Actuators A 186:223-229
[Ilg13] Ilg J, Rupitsch SJ, Lerch R (2013)
Impedance based temperature sensing with piezoceramic devices. IEEE Sens J 13(6):2442-2449
[Huf14] Hufenbach WA, Modler N, Winkler A, Ilg J, Rupitsch SJ (2014)
Fibre-reinforced composite structures based on thermoplastic matrices with embedded piezoceramic modules. Smart Mater Struct 23(2):25011(10pp)

Other Publications

[Rup10] Rupitsch SJ, Sutor A, Ilg J, Lerch R (2010)
Identifcation procedure for real and imaginary material parameters of piezoceramic materials. In: IEEE IUS, pp 1214-1217
[Rup11a] Rupitsch SJ, Ilg J, Sutor A, Lerch R (2011)
Variation of material parameters for the thickness extensional mode of piezoceramic discs in case of mechanical loading. Proc Eng 25:1441-1444
[Rup11b] Rupitsch SJ, Ilg J, Lerch R (2011)
Enhancement of the Inverse Method enabling the material parameter identification for piezoceramics. In: IEEE IUS, pp 357-360
[Rup13] Rupitsch SJ, Ilg J, Lerch R (2013)
Inverse scheme to identify the temperature dependence of electromechanical coupling factors for piezoceramics. In: IEEE Int Symp Appl Ferroelectr, pp 183-186
[Wol13] Wolf F, Hirsch H, Sutor A, Rupitsch SJ, Lerch R (2013)
Efficient compensation of nonlinear transfer characteristics for piezoceramic actuators. In: IEEE Int Symp Appl Ferroelectr, pp 171-174


Project Manager:

Prof. Dr.-Ing. Reinhard Lerch
Friedrich-Alexander-Universität Erlangen-Nürnberg
Lehrstuhl für Sensorik
Paul-Gordan-Str. 3/5
91052 Erlangen

Phone: +49 9131 85-23131


Dr. techn. Stefan Johann Rupitsch
Friedrich-Alexander-Universität Erlangen-Nürnberg
Lehrstuhl für Sensorik
Paul-Gordan-Str. 3/5
91052 Erlangen

Phone: +49 9131 85-23141


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