Probably the most useful troubleshooting tools used in a predictive maintenance management program for shipboard machinery are vibration meters, analyzers, and monitors. What is the term that represents the rate of change of the velocity as a result of a part vibrating during its periodic or oscillatory motion?
• Simple motion concepts: displacement, velocity, acceleration in oscillating motion • How velocity and acceleration are related (rate of change ideas) • Basic vibration terminology used in shipboard predictive maintenance instruments
• In basic physics, what quantity changes when an object speeds up or slows down, even if it keeps moving in the same direction? • If velocity describes how fast position changes, what describes how fast velocity itself is changing? • When a vibration meter is looking at how ‘hard’ a machine is shaking the bearings, is it more closely related to how far it moves, how fast it moves, or how fast that speed is changing?
• Match the phrase “rate of change of the velocity” with the correct physics term • Eliminate any option that clearly describes how far something moves rather than how its speed changes • Be sure you’re not mixing up frequency (how often something happens per second) with how its speed is changing in time
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