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Related Experiment Videos

Tennis racket shock mitigation experiments

J F Wilson1, J S Davis

  • 1Department of Civil Engineering, Duke University, Durham, NC 27706, USA.

Journal of Biomechanical Engineering
|November 1, 1995
PubMed
Summary
This summary is machine-generated.

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Cushioned grip tape significantly reduces tennis racket shock, increasing damping by 100% and decreasing grip force. String implants showed minimal impact on racket dynamics.

Area of Science:

  • Sports Engineering
  • Biomechanics
  • Materials Science

Background:

  • Tennis rackets are susceptible to shock transmission during ball impact.
  • Mitigating shock can enhance player comfort and potentially reduce injury risk.
  • Retrofit devices offer a potential solution for shock absorption in rackets.

Purpose of the Study:

  • To evaluate the effectiveness of two retrofits—cushioned grip tape and a string implant device—in mitigating shock in tennis rackets.
  • To analyze the impact of these retrofits on racket head dynamics and grip forces across different racket materials.
  • To assess the influence of ball impact speed on retrofit performance.

Main Methods:

  • Investigated three racket types: wood, graphite composite, and metal.

Related Experiment Videos

  • Applied cushioned grip tape and string implant retrofits.
  • Measured coefficient of restitution (e) at low ball speeds.
  • Assessed free vibration damping, root-mean-square (rms) grip reaction force, and FFT of grip force at moderate ball speeds.

    • Main Results:

    • Neither retrofit significantly altered the coefficient of restitution (e) at low impact speeds.
    • String implant devices had a negligible effect on measured dynamic responses.
    • Cushioned grip tape increased racket damping by up to 100%.
    • Cushioned grip tape reduced rms grip force by approximately 20%.
    • Cushioned grip tape reduced the FFT magnitude of grip force by about 40%.

    Conclusions:

    • Cushioned grip tape is an effective retrofit for reducing shock and dynamic forces in tennis rackets.
    • String implant devices show limited efficacy in mitigating racket shock.
    • The findings suggest cushioned grip tape can improve player experience by reducing transmitted forces.