Technical Papers Covers High-Shock Measurement

July 20th, 2007

A technical paper from Endevco addresses issues in measuring high shock levels. According to the website, the paper, “Problems in High-Shock Measurement,”

The biggest challenge [in making high-g shock measurements] has always been to pinpoint the source(s) of the problem. This paper discusses a major source of errors - the shock accelerometer, and suggests a practical solution.

The input spectrum of high-g shock, be it mechanical or pyrotechnic, has always been underestimated by practitioners in the measurement industry, leading to improper test equipment selections. Furthermore, most transducer manufacturers have very limited experience in high-g shock test, and it is reflected in the design approaches of many so called “shock” accelerometers. This author suggests that, in close-range (near-field) high-g shock measurement, the accelerometer must be protected from all ultra high frequency input energy in order to avoid sensor resonance, which is the root cause of many problems in high-g shock measurement. This paper also outlines the ingredients of a true shock accelerometer.

Entry Filed under: Environmental/Durability Test