8204  Miniature Impact Hammer, 22.7 mV/N, includes head extender

The piezoelectric force transducer is designed to excite and measure impact forces on small structures such as disc-drive heads, circuit boards, turbine blades and similar small structures. An accelerometer (or laser velocity transducer) is used to measure the response of the structure. By using a multichannel FFT analyzer, such as the PULSE™ system, the frequency response function and mode shapes of the test structure can be derived.

Uses

  • Impact-force measurements on small structures
  • Measurement of frequency response functions using impact excitation techniques
  • As part of a dynamic structural testing system for modal analysis and the prediction of structural response

Features

  • Compact size and low weight
  • Negligible changes to dynamic properties of test structure
  • Aluminium shaft to reduce occurrence of double impacts
  • DeltaTron® (low-impedance) output

Characteristics

Type 8204 has built-in electronics. The sensitivity is expressed in terms of voltage per unit force (mV/N or mV/lbf).

The integral impact tip is made of stainless steel, which combined with the very low mass gives a high resonance frequency. The frequency response of the impact and decay of the impulse can be adjusted by applying tape to the impact area or using the supplied head extender.



For a full Description and Specifications, see Product Data

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