A Close Look at the Measurement of Shock Data: Lessons Learned

Pyroshock testing and analysis is one of the most difficult regimens in the field of structural dynamics. The harsh and often-unpredictable environment has caused relatively poor behavior of the measurements systems used, often for reasons that were not well-understood. This paper reports on a study that was performed with the goal of better understanding the problem areas and development of methods for improving results. Specific areas addressed include: characterization of the broadband response and evaluation of its effects on standard measurement systems, transducer mounting and cabling techniques, measurement of inplane motion, and the problem of justifying/normalizing the results obtained by different data acquisition systems.