In Situ Measurements of Interfacial Contact Pressure During Impact Hammer Tests

  • B. SeegerEmail author
  • P. Butaud
  • M. V. Baloglu
  • F. Du
  • M. R. W. Brake
  • C. W. Schwingshackl
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)


Understanding the nonlinear dynamical contact interactions within joints is crucial for understanding and predicting the dynamics of assembled structures. In spite of this, most experimental investigations focused on the global vibration behavior, since the local interactions at the interface cannot be observed with standard techniques. In the present work, an advance contact pressure measurement system is used in a unique way to analyze, in situ, the interfacial contact pressures and the contact area inside a bolted lap joint connecting two beams (Brake-Reuß beam). An important feature of the measurement system is that it is designed for frequency ranges including the typical vibration frequency of the Brake-Reuß beam’s first eigenmode, and thus permits measurement under dynamic excitation. The dynamics of the contact pressures were investigated with different bolt torque levels and with different excitation levels. The experiments found that significant variations of the contact state occurred and that the contact pressure measurement system could adequately resolve this effect. The influence of the measurement system itself on the global vibration response of the Brake-Reuß beam was shown to be tolerable.


Assembly Lapjoint Nonlinear Experimental Pressure sensor 



This research was conducted at the 2017 Nonlinear Dynamics of Coupled Structures and Interfaces Summer Research Program, sponsored by Rice University.

The authors would also like to thank the “Fond Interministeriel Unique” that funds the project CLIMA and the “Bourse-Oréal UNESCO Pour les Femmes et la Science” encouraging women to pursue careers in science.

The authors would also like to thank the National Natural Science Foundation of China (Grant No.51705422).


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Copyright information

© The Society for Experimental Mechanics, Inc. 2019

Authors and Affiliations

  • B. Seeger
    • 1
    Email author
  • P. Butaud
    • 2
  • M. V. Baloglu
    • 3
  • F. Du
    • 4
  • M. R. W. Brake
    • 5
  • C. W. Schwingshackl
    • 6
  1. 1.Institute of Aircraft Propulsion SystemsUniversity of StuttgartStuttgartGermany
  2. 2.Department of Applied Mechanics, FEMTO-ST Institute, CNRS/UFC/ENSMM/UTBMUniversité Bourgogne Franche-ComtéBesançonFrance
  3. 3.Friedrich-Alexander University Erlangen-NürnbergErlangenGermany
  4. 4.School of AstronauticsNorthwestern Polytechnical UniversityXi’anPeople’s Republic of China
  5. 5.William Marsh Rice UniversityHoustonUSA
  6. 6.Department of Mechanical EngineeringImperial College LondonLondonUK

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