Vibration tests have been conducted for a package using a random vibration method to evaluate the anti-vibration function of the package. The acceleration power spectral density (PSD) as a random vibration test condition is regulated using JIS Z0200:2023, which only demonstrates the vertical condition. However, JIS Z0232:2020 proposes the use of PSD developed using actual transport vibration data obtained through field-data recording owing to significant changes in the shape of PSD curves based on various transport conditions. However, the recording of actual transport data is often difficult. This study proposes a method to determine PSD for conducting a more realistic random vibration test than the use of JIS-based PSD, even with the difficulties involved in individually collecting field data. I propose a simple calculation method for PSD test profile based on random transport conditions and test environment using actual transport PSD curves obtained through truck and rail vibrations with three-axis.

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