Test overview

■ Purpose

To calculate the degree of damage in random vibration tests, the frequency distribution of strain (stress) is measured by rainflow analysis of the strain gauge response.
The damage degree ∑ni/Ni is calculated from the frequency distribution results and the S-N diagram.

■ EUT

Welded structural items etc.

Test state image

Memo

Facilities used

Dynamic strainmeters, strain gauges, frequency analysers