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Meggitt Sensing Systems - Measurement Group

  • Pulse hammer / with IEPE output / shock

2302-50 series

Article: 00104219

Pulse hammer / with IEPE output / shock

- 3 replaceable tips
- Low impedance (Isotron®) output
- Acceleration compensated
- Ergonomically designed grip

Scaled modal models require a precise force measurement. This can be achieved by electrodynamic and servohydraulic exciters controlled by a signal generator via a power amplifier. A more convenient and economical excitation method is a hammer fitted with a high-quality piezoelectric force transducer. In applications where a high crest factor and a limited ability to shape the input force spectrum is of no concern, impact hammer testing is an ideal source of excitation. Impact hammers are highly portable for field work and provide no unwanted mass loading to the structure under test.

The modal hammer excites the structure with a constant force over a frequency range of interest. Three interchangeable tips are provided which determine the width of the input pulse and thus the bandwidth. Typical force spectra produced with different tips are shown at the bottom.

For larger structures, an optional head extender is available to increase the head?s mass. The hammer structure is acceleration compensated to avoid glitches in the spectrum due to hammer structure resonances. The ergonomically designed handle grip helps the user optimize control and reduce the possibility of ?double hits?.

The hammer features an Isotron impedance converter providing an IEPE output which is compatible with most FFT analyzers and data acquisition systems.

Specifications

  • Type: pulse
  • Other characteristics: with IEPE output, shock

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