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Related Experiment Videos

Four axial structural and material test machine

L Berglund1, M Samson, K N An

  • 1Orthopaedic Biomechanics Laboratory, Mayo Clinic, Rochester, MN 55905.

Biomedical Sciences Instrumentation
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

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A new PC-based biomechanical testing machine offers flexible, coordinated multi-axis control for complex joint motion analysis. This advanced system enhances the study of joint constraint and laxity, overcoming limitations of conventional equipment.

Area of Science:

  • Biomechanics
  • Orthopedic Engineering
  • Biomedical Device Development

Background:

  • Conventional testing machines are inadequate for complex biomechanical analyses of joints.
  • Previous studies on wrist, elbow, foot, and spine joints highlighted limitations of existing equipment.
  • Sophisticated testing requires flexible, multi-axis control and precise force/moment measurement.

Purpose of the Study:

  • To develop and build a novel PC-based biomechanical testing machine.
  • To provide a flexible and sophisticated platform for complex joint motion analysis.
  • To enable accurate measurement of forces and moments during structural tests.

Main Methods:

  • A PC-based, four-axial benchtop test machine was designed and constructed.
  • The machine features a rigid aluminum frame with three translational and one rotational axis.

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  • It utilizes micro-stepping motors, a 486 PC controller, an A-D board, and a six-component load cell.

    • Main Results:

    • The developed test machine offers coordinated multi-axis control (independent or dependent).
    • Custom software supports displacement, load control, and feedback velocity control modes.
    • The system facilitates feasible and easy operation for joint constraint and laxity analysis.

    Conclusions:

    • The new biomechanical test machine is a viable and user-friendly tool for advanced joint analysis.
    • It addresses the shortcomings of conventional machines in testing complex motion segments.
    • The system enables precise evaluation of joint mechanics, constraint, and laxity.