Testing Disciplines
Acoustic Emissions
| The measurement of the acoustic noise emitted from a specimen, either though a mechanical structure or air. |
| Airborne Noise |
| The basic unit of measurement for airborne noise is sound power. Sound pressure measurements are frequently recorded and the sound power calculated from the measurements. |
| Airborne sound is typically measured in accordance with MIL-STD-740-1 |
| Structureborne Noise |
| The basic method for the measurement of Structureborne noise is the measurement of the vibrational acceleration induced by equipment. Typically the equipment is resiliently mounted and tri-axial measurements are made at each of the mounting points. |
| Structureborne sound is typically measured in accordance with MIL-STD-740-2 |
| Related Test Methods |
| Acoustic Noise Impingement |
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