IMPLEMENTING A SHOCK-FORCE CALIBRATION SYSTEM USING A VIBRATION EXCITER AND PENDULUM

Christiaan S. Veldman

Abstract

The NMISA upgraded its impulse hammer calibration system to satisfy new demands from local industry for shock force measurements. As part of Land Mobility Testing (LMT), high impact force levels are measured. Improvements to the existing facility required the development and implementation of a system, able to deliver repeatable high impact forces, with a substantial payload. Further improvements included the development of a data capturing unit for the measurement of the impact pulses and to determine the unit under test shock force sensitivity.<br />This paper will discuss the measurement methodology applied for the generation and measurement of shock pulses. The determination of the force required for the generation of these shock pulses is discussed, indicating the chain of traceability to the SI. The system performance is demonstrated. To conclude, data to validate the performance is provided together with an overview of the uncertainty of measurement estimation.

Keywords

shock, dynamic force, calibration, impulse hamme

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IMEKO-TC22-2010-NP-004.pdf

DOI

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IMEKO TC

TC22 - Vibration Measurement

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