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Strain Gauge Presentation

The document presents an overview of mechanical sensors, specifically focusing on strain gauges, which measure deformation in objects by detecting changes in electrical resistance. It discusses their working principles, types, applications across various fields, and highlights their advantages and limitations. The conclusion emphasizes the importance of strain gauges in precision measurement and their potential future integration with smart materials and IoT.

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26 views8 pages

Strain Gauge Presentation

The document presents an overview of mechanical sensors, specifically focusing on strain gauges, which measure deformation in objects by detecting changes in electrical resistance. It discusses their working principles, types, applications across various fields, and highlights their advantages and limitations. The conclusion emphasizes the importance of strain gauges in precision measurement and their potential future integration with smart materials and IoT.

Uploaded by

900242a
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPTX, PDF, TXT or read online on Scribd
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Mechanical Sensor – Strain Gauge

• Measuring Strain with Precision

• Presented by: [Your Name]


• Institution: [Your Institution]
• Date: [Presentation Date]
Introduction to Mechanical Sensors
• Mechanical sensors are devices used to
measure physical changes in the environment
such as pressure, displacement, and strain.

• They are critical in fields like robotics,


automotive, and structural engineering.
What is a Strain Gauge?
• A strain gauge is a sensor used to measure the
amount of strain (deformation) in an object.

• It works by detecting changes in electrical


resistance as the material deforms.

• Invented in 1938 by Edward E. Simmons and


Arthur C. Ruge.
Working Principle
• Based on Hooke's Law and Ohm's Law.

• Resistance (R) = ρ * (L / A)

• As length (L) increases and area (A) decreases,


resistance increases.

• Gauge Factor (GF) = (ΔR / R) / ε


• Where ε is the strain.
Types of Strain Gauges
• - Foil Strain Gauges (most common)
• - Wire Strain Gauges
• - Semiconductor Strain Gauges
• - Optical Strain Gauges

• Each type varies in sensitivity and application.


Applications
• - Aerospace: Structural analysis
• - Civil Engineering: Bridge stress monitoring
• - Automotive: Crash testing
• - Biomechanics: Prosthetic testing
• - Manufacturing: Machine part stress analysis
Advantages and Limitations
• Advantages:
• - High accuracy
• - Compact and lightweight
• - Economical

• Limitations:
• - Sensitive to temperature
• - Requires calibration
• - Limited to small strain ranges
Conclusion
• Strain gauges are essential tools in precision
measurement and stress analysis.

• Future scope includes integration with smart


materials and IoT for real-time monitoring.

• "What gets measured, gets improved."

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