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. In addition to these fundamentals, one of the hands-on installations will involve correct installation of a strain gage rosette on a printed circuit board per IPC/JDEC 9704A specifications. Data acquisition and analysis topics will also be covered.
Topics include:
Strain Gage (Strain Gauge) Characteristics
- Gage Factor
- Temperature Compensation
- Sensing Alloys
- Transverse Sensitivity
- Strain Limits
- Fatigue Endurance
Installation Techniques
- Surface Preparation
- Adhesive Selection
- Gage Installation Procedures and Check-Out
- Leadwire Attachment and Soldering Techniques
- Protective Coatings
Gage Installations with Epoxy, Epoxy-Phenolic, and Cyanoacrylate Adhesives
- Room-Temperature Installation of CEA gage on Aluminum
- Room-Temperature Installation of C2A stacked rosette on PCB material
- Clamping Techniques
- Leadwire Attachment
- Protective Coatings
- Measuring Strain Level
Discussion of Special Gage Installation Techniques for Measurement Over Wide Temperature Ranges
- Gage Selection
- Gage Performance Characteristics
- Temperature Effects
- Leadwire Selection and Attachment
- Protective Coating Systems
Strain Gage (Strain Gauge) Circuitry
- Quarter, Half and Full Bridges
- Leadwire Compensation
Bridge Excitation
- Power Levels
- Self-Heating
Rosette Data Reduction
- Measurement and data analysis of stacked rosette on PCB including:
- Maximum Principal Strain
- Minimum Principal Strain
- Direction
- Strain Rate
- High Speed Data Acquisition — Pacific Instruments