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Micro-Measurements Advanced Hands-on Workshop covering Strain Gage Technology (3 day)

In this comprehensive, hands-on Workshop, participants make several complete strain gage (strain gauge) 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 (Strain Gauge) 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 (Strain Gauge) 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
Calibration Techniques
Discussion of Specific Problems as Requested by Participants