A booklet about PeakVue™ - Illustration of its Wide Array of Applications in Fault Detection & Problem Severity Assessment (95 page booklet)
• Stress Wave analysis is a powerful complementary tool that can detect a range of faults and problem conditions that Vibration Analysis alone might miss under certain conditions.
• This publication serves as a “white paper” on the PeakVueTM analysis method which is actually a measure of “stress wave” activity in metallic components that are associated with impact, friction, fatigue cracking, lubrication, etc.
• They generate faults in various components such as rolling element bearings and gears.
• When components impact a series of stress waves will be generated that propagate away from the location of the defect in numerous directions.
• The wave propagation introduces a ripple on the machine surface that causes a response output in a sensor detecting absolute motion such as an accelerometer or a strain gage.
This paper provides answers to:
• What are stress waves?
• How are they measured?
• What are recommended measurement setups needed to ensure optimum PeakVue data is captured (proper high-pass filter, FMAX, # FFT lines, #time domain samples, etc.)?
• How to choose the parameters that are dependent on the type of fault for which one is looking (cracked gear tooth versus generalized tooth wear, for example)?
• How to specify meaningful PeakVue alarm levels to various machine components and operating speeds?
• How studies have been conducted to determine the effect on PeakVue amplitudes of certain faults occurring on specific components and how they can generate very different amplitudes?
• How certain faults might actually go undetected if the proper setup parameters are not chosen?
• How Real World Case Histories are used to demonstrate the stress wave method?