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What the Quality Engineer y gneeds to know about Vibration Testing
Part 2 of 3Part 2 of 3
Wayne Tustin©2011 ASQ & Presentation Wayne Tustin
Presented live on Sep 07th, 2011
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What the Quality Engineer needs to know about Vibra7on
Wayne Tus7n Equipment Reliability Ins7tute
Santa Barbara, California www.equipment-‐reliability.com
805-‐564-‐1260 September 7, 2011
Video Clip 1 Tacoma Narrows Bridge
courtesy Lansmont
Figure 1 Servohydraulic vibration platform
Video-‐Clip 13-‐0
courtesy DDL, Inc.
courtesy NTS Fullerton and Team Corporation
Video Clip 13-1 Horizontal Shaking
Video-‐Clip 13-‐2 More NEBS Tes7ng
U.S. Army Engineer Research and Development Center
Figure 2
Force is perpendicular to both the ac current and the magnetic field and reverses when ac current reverses.
ac
ac
Figure 2A
Force is perpendicular to both the ac current and the magnetic field and reverses when ac current reverses.
ac
ac
Figure 2B
Force is perpendicular to both the ac current and the magnetic field and reverses when ac current reverses.
ac
ac
Figure 2C
Force is perpendicular to both the ac current and the magnetic field and reverses when ac current reverses.
ac
ac
F = MA
Force = Mass x Accelera7on
TABLE – K1A MAGNESIUM OR ALUMALLOY CASTING
OR WELDMENT
DRIVER COIL
Figure 3
Figure 4
Figure 5
courtesy of LDS
AC DC
flexure table
courtesy Data Physics
Figure 5A Power Amplifier
Figure 5B Controller and Connections
courtesy Vibration Research
Figure 6
Figure 7
courtesy LDS
Figure 8
courtesy Elite Electronic Eng
Figure 9 Chamber and slip table
7me
accelera7o
n en
ergy
frequency
Figure 10
Figure 11
Figure 12
Figure 13 M
agni
tude
Time
Figure 14
A = 440 Hz
A = 440, 880, 1320, 1760, etc.
Figure 15
A = 440 Hz
A = 440, 880, 1320, 1760, etc.
Figure 16
A = 440 Hz
A = 440, 880, 1320, 1760, etc.
Figure 17
A = 440, 880, 1320, 1760, etc.
Figure 18
A = 440, 880, 1320, 1760, etc.
Another continuous spectrum
Figure 19
Figure 20
what domain?
Video Clip 20-6 Detroit Street
Figure 21
courtesy Dytran
Figure 22
courtesy PCB
Figure 23
courtesy John Starr
Animation 10-1
Review
Sinusoidal forcing
Complex and random vibra7on
Effect of random vibra7on
Need for mul7ple shakers
What the Quality Engineer needs to know about Vibra7on
Wayne Tus7n Equipment Reliability Ins7tute
Santa Barbara, California www.equipment-‐reliability.com
805-‐564-‐1260