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Workshop W62 - Strain Gage Technology
Three Days
In this comprehensive, hands-on Workshop,
participants make several complete strain gage
installations, including electrical connections,
check-out, and environmental protection; and use
appropriate readout instrumentation to verify results
of their own installations.
A wide range of strain measuring instrumentation is
described in detail, and guidelines for proper
instrument selection and usage are thoroughly
reviewed. Participants have an opportunity to examine
and familiarize themselves with all instruments on
display. In the instrumentation portion of the
program, some electrical circuitry is discussed.
Familiarity with Ohm's law, series and parallel
circuits, and the Wheatstone bridge is helpful.
Topics include:
Strain Gage Characteristics
- Temperature Compensation
- Sensing Alloys
- Transverse Sensitivity
- Strain Limits
- Fatigue Endurance
Installation Techniques
- Surface Preparation
- Adhesive Selection
- Gage Installation Procedures and Check-Out
- Leadwire Attachment
- Protective Coatings
Gage Installations with Epoxy, Epoxy-Phenolic, and
Cyanoacrylate Adhesives
- Room-Temperature Installation
- Handling Heat-Curing Adhesives
- Clamping Techniques
- Leadwire Attachment
- Protective Coatings
- Measuring Strain Level
Special Gage Installation Techniques for
Measurement Over Wide Temperature Ranges
- Gage Selection
- Gage Performance Characteristics
- Temperature Effects
- Leadwire Selection and Attachment
- Protective Coating Systems
Temperature Measurement Techniques
- Foil Temperature Sensors
- Cryogenic Environments
- Linearizing Networks
Strain Gage Circuitry
- Quarter, Half and Full Bridges
- Leadwire Compensation
Bridge Excitation
- Power Levels
- Self-Heating
Static Measurements
- Strain Indicator Characteristics
- Multi-Channel and Computer-Based Systems
Dynamic Measurements
- Signal Conditioning
- Frequency Response
- Readout Instrumentation
Noise Reduction
- Shielding
- Grounding
- Leadwire Considerations
Discussion of Specific Problems as Requested by
Participants
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