what the quality engineer needs to know about vibration testing part3of3
DESCRIPTION
Wayne will sample, in 3 hours, his 3-day course. In the 3 hours, he will introduce the concept of resonant behavior of a wide range of structures (the Tacoma Narrows Bridge down to electronic circuit boards). Laboratory vibration tests on samples determine whether product design and manufacture have avoided or at least lessened resonant responses. Wayne will introduce sinusoidal as well as random vibration test standards. He will show, by slides and video clips, how we perform those standard tests by means of (1.) EH or electrohydraulic or servohydraulic shaker systems and (2.) ED or electrodynamic shaker systems, including their power amplifiers and their controllers. Part 3: Last century single-axis-at-a-time; this century simultaneous multiaxis; use AST presentation. Why is multiaxis testing important to QE?TRANSCRIPT
What the Quality Engineer y gneeds to know about Vibration Testing
Part 3 of 3Part 3 of 3
Wayne Tustin©2011 ASQ & Presentation Wayne Tustin
Presented live on Sep 08th, 2011
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ASQ Reliability DivisionASQ Reliability Division Short Course SeriesShort Course SeriesThe ASQ Reliability Division is pleased to present a regular series of short courses
featuring leading international practitioners, academics and consultantsacademics, and consultants.
The goal is to provide a forum for the basic andThe goal is to provide a forum for the basic and continuing education of reliability
professionals.
http://reliabilitycalendar.org/The_Reliability Calendar/Short Courses/Shliability_Calendar/Short_Courses/Short_Courses.html
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 8, 2011
Figure 1 Random Vibration Video Demonstration
SHAKER TABLE
Video Clip 20-7 Below Resonance
Video Clip 20-8 First Resonance
Video Clip 20-9 Second Resonance
Video Clip 20-10 Simultaneous Resonances
Figure 5 Continuous visible light spectrum
Figure 6
Early Rocket Liftoff
High velocity gas flow intense noise
Impinging intense noise results in random skin vibra7on, re-‐radiated internally as intense interior noise and results in intense random vibra7on responses, especially of thin sec7ons such as wiring boards.
Our first serious recogni7on of random vibra7on as an engineering problem was in the early 1950s, when many rockets exploded at igni7on or exploded or went out of control during liToff.
ROCKET LIFTOFF
Figure 7
Video Clip 20-6 Roadway near you
Equipment Reliability Institute, Wayne Tustin
Figure 8 - Gathering Field Data
courtesy Team
Copyright ® 2011 11
courtesy LDS
Figure 9 Shaker drives Slip Plate
Figure 10 Three-shaker Navy 3DoF realization
Courtesy NUWC Keyport and Baughn Engineering
Copyright 2011 :: Equipment Reliability Ins7tute, Wayne Tus7n
13
Figure 11 Triaxial shaking of headlamps
courtesy Spectrum Technologies
Copyright 2011 :: Equipment Reliability Ins7tute, Wayne Tus7n
14
Video Clip 16-3 45o Two-axis Video
courtesy IMV
Copyright 2011 :: Equipment Reliability Ins7tute, Wayne Tus7n
15
Video Clip 16-4 Two-axis Circular Motion Video
courtesy IMV
Copyright 2011 :: Equipment Reliability Ins7tute, Wayne Tus7n
16
Video Clip 16-5 Multiaxis random vibration
Courtesy IMV
Copyright 2011 :: Equipment Reliability Ins7tute, Wayne Tus7n
17
courtesy LDS
Figure 12 Shaker drives Slip Plate
What the Quality Engineer needs to know about Vibra7on.
Wayne Tus7n Equipment Reliability Ins7tute
Santa Barbara, California www.equipment-‐reliability.com
805-‐564-‐1260