: Simulating the harsh shipboard environment—including engine-induced oscillations—to ensure functional and structural integrity. Isolation Dynamics Corp. MIL-STD-167: Mechanical Vibrations of Shipboard Equipment
Meeting these requirements provides documented evidence that equipment will survive operational vibratory stresses without premature fatigue failure. mil-std-167-2a pdf
It defines vibration test requirements for equipment installed on U.S. Navy ships (and some other marine vessels) to ensure it can withstand: and structural components)
While covers environmental and internally excited vibrations for general shipboard equipment (such as electronics, pumps, and structural components), 167-2A specifically targets the unique vibrational profiles of reciprocating components. This includes: Internal combustion engines (diesel engines) Reciprocating air compressors Piston-driven pumps Associated shafting and auxiliary drive systems mil-std-167-2a pdf
Dictates Type I (Environmental) vibrations caused by the vessel moving through water, and Type II (Internally Excited) vibrations produced by generic unbalanced rotating machinery.
▲ [MIL-STD-167 Standard Family] │ ┌─────────┴────────────────────────┐ ▼ ▼ [MIL-STD-167-1A] [MIL-STD-167-2A] ├── Type I: Environmental ├── Type III: Torsional (Propulsion) └── Type II: Internally Excited ├── Type IV: Longitudinal (Shafting) └── Type V: Lateral (Reciprocating) Classification of Vibration Types in 167-2A
For engineers, naval architects, and quality assurance specialists looking for the , the official and most current version can be downloaded via the ASSIST Quick Search database . 1. Scope and Purpose of MIL-STD-167-2A