FIXT 501 – Vibration and Shock Test Fixture Design
Introduction of instructor and participants
Overview for management and participants
- Purpose of environmental testing, particularly vibration and shock
- Types of vibration tests: Sinusoidal, random, resonance search/dwell, fatigue, specification
- Types of shock tests: Classical waveform, SRS
- Need to understand vibration before designing fixtures
- Approximate scheduling so managers can audit special topics
Classical sinusoidal vibration never observed in service; but still a useful concept
- Introduction: terminology, structural resonant behavior
- Sinusoidal vibration measurements: units, sensors, readouts, errors
Sinusoidal vibration testing
- Electrohydraulic and electrodynamic shakers; theory, tradeoffs, limits
Introduction to random vibration
- Terminology and definitions
- Spectral density measurement and analysis – the frequency domain
Random vibration test practice
- Interpreting and implementing standards, e.g. MIL-STD-810
- Controls, practice
Environmental stress screening (ESS) of electronics hardware production; HALT, HASS
- Single vs. multi-axis vibration
- Pneumatic repetitive-shock machines
Vibration and shock test fixtures; fixtures for stress screening
- Fixture function defined
- Fixture design requirements
- Recommended designs
- Recommended materials
- Recommended fabrication methods
- Standard fixtures
- Special purpose fixtures
- Control accelerometer location
- Use of multiple control accelerometers
- Experimental evaluation before use
- Use with slip plates and head expanders
Shock testing standards and methods
- Shock testing machines; limitations
- Use of shaker, shock response spectrum (SRS)
- Do not stack resonances
- Isolation, rigidity, analysis
Course summary; optional final examination; award of certificates
Contact us for pricing and information at:
(805) 456-4274 or
info@equipment-reliability.com
“Imperative information for anyone with any level of involvement in the industry”
“Nice overview of theories of vibration, shaker tables, shock and their application in real-world testing”