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Asset gallery

Type 5961

Hand-held Exciter Type 5961 combines the versatility of a shaker test for optimizing the excitation signal to the test at hand with the mobility of an impact hammer test for easily roving around the test structure. While an impact hammer test is fast and easy to perform, the high crest factor has the potential to drive the structure into non-linear behaviour.

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Type 5961

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Hand-held Exciter Type 5961 combines the versatility of a shaker test for optimizing the excitation signal to the test at hand with the mobility of an impact hammer test for easily roving around the test structure. While an impact hammer test is fast and easy to perform, the high crest factor* has the potential to drive the structure into non-linear behaviour. Also, the highly deterministic nature of the impact signal means that a linear approximation of slightly non-linear structures is not possible when performing averaging. In a shaker test, various types of random excitation signals such as continuous, burst, and periodic can be used to significantly lower the crest factor and perform a good linear fit of slightly non-linear structures. In addition, using burst or periodic random excitation you can avoid leakage in the analysis. With shaker testing, you also have full control of excitation bandwidth and can limit it to the frequency range of interest including zoom measurements.

Uses

  • Excitation of small structures:
    – General vibration testing
    – Mechanical impedance and mobility measurements
    – Experimental modal analysis
  • Tests where hand-held operation is ideal:
    – Field measurements
    – Troubleshooting
    – Fast investigations
  • Permanent lab setups with a fixed exciter position using fixtures and stingers

Features

  • The mobility of hammer testing combined with the broad range of excitation signals of shaker testing
  • Compact and lightweight design
  • Battery operation, no separate power amplifier or connection to mains power
  • Hand-held operation, requires no elaborate fixturing
  • Frequency range: 45 Hz to 15 kHz
  • Force range: 2 N peak (0.310 N RMS)
Hand-Held Exciter Type 5961 Data Sheets English

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