Advanced Strain-Based Crack Sensors for Precise Structural Insight
High-sensitivity crack detection systems to monitor stress-related changes in critical infrastructure across North America
Strain-Based Crack Sensors for Advanced Structural Monitoring
Strain-based crack sensors provide a powerful method for detecting and analyzing structural shifts by measuring changes in strain around potential crack zones. These sensors help identify early signs of structural compromise in concrete, steel, masonry, and other load-bearing materials. Designed for long-term performance, strain-based sensors enable continuous monitoring, support preventive maintenance strategies, and reduce the risk of catastrophic failure.
This page provides a comprehensive look at how strain-based crack sensors function, including their key features, industry compatibility, and practical applications across infrastructure and industrial sectors. Real-world case studies from the U.S. and Canada illustrate how these technologies deliver measurable benefits.
As a trusted B2B provider across North America, Damage Detection Tech delivers these solutions with the support of advanced technologies from leading manufacturers. Our approach is backed by innovation, reliability, and a deep commitment to customer success.
Integrated Global Partnerships and Premium Technologies
In addition to offering products and systems developed by our team and trusted partners for strain-based crack sensors, we are proud to carry top-tier technologies from Global Advanced Operations Tek Inc. (GAO Tek Inc.) and Global Advanced Operations RFID Inc. (GAO RFID Inc.). These reliable, high-quality products and systems enhance our ability to deliver comprehensive technologies, integrations, and services you can trust. Where relevant, we have provided direct links to select products and systems from GAO Tek Inc. and GAO RFID Inc.
System Components
High-Precision Strain Gauge Sensors
Analog or amplified output, ±3000 µstrain, ≤2% accuracy—ideal for concrete, steel, masonry applications.
High sensitivity, 350 Ω bridge, compact phenolic design—perfect for localized strain measurement.
Stainless steel, IP66-rated, 0.1% accuracy—from 500 N to 50 kN, excellent for heavy structural loads.
Wireless Communication & Data Loggers
- GAO RFID Active Data Logger (433 MHz)
Captures analog strain data and transmits wirelessly, eliminating manual readings. - GAO RFID 2.45 GHz Gateway
Aggregates readings from multiple sites, enabling remote monitoring across facilities.
Environmental Monitoring (Optional)
GAO RFID Environmental Sensor Tags
Records temperature and humidity data to contextualize strain variations.
Monitoring Software Platform
- GAO Tek Structural Health Monitoring (SHM) software visualizes real-time data, trends, and generates alerts when strain thresholds are exceeded.
- Cloud-enabled with exportable CSV data, compatible with SCADA and maintenance systems.
Key Features and Functionalities
- High Sensitivity to minute strain changes along crack-prone regions
- Durable and Weather-Resistant designs for long-term outdoor deployment
- Continuous or Periodic Monitoring for short- or long-term projects
- Integrated with Wireless Systems for remote data acquisition
- Temperature Compensation ensures reliable data in varying conditions
- Compact Form Factor supports embedding in concrete or attaching to steel
Compatibility
Strain-based crack sensors are compatible with:
- Structural monitoring platforms (wired and wireless)
- SCADA and IoT data aggregation systems
- GAO RFID active data loggers and gateways
- GAO Tek SHM software
- Mobile and desktop-based analysis tools
Applications
- Bridge and overpass monitoring
- Dam and levee inspections
- Tunnel crack movement detection
- Parking structure and stadium surveillance
- High-rise building strain analysis
- Heritage structure conservation
Industries Served
- Civil and structural engineering
- Transportation infrastructure
- Energy and utilities
- Commercial real estate and facility management
- Aerospace and defense infrastructure
- Water treatment and distribution
Relevant U.S. & Canadian Industry Standards
- AASHTO LRFD Bridge Design Specifications
- ASTM C876
- FHWA Crack Monitoring Guidelines
- CSA S6 – Canadian Highway Bridge Design Code
- CAN/CSA A23.3 – Design of Concrete Structures
Case Study
Bridge Retrofit in Missouri
The Missouri Department of Transportation partnered with Damage Detection Tech to install strain-based crack sensors on a 60-year-old highway overpass. The sensors detected strain concentrations in beam-column joints under heavy truck traffic. Data led to reinforcement before visible cracks appeared, extending the bridge’s service life.
Case Study
Concrete Dam in Northern California
A state-run utility installed our strain-based sensors on the upstream face of a concrete gravity dam. Monitoring revealed seasonal strain variations that matched reservoir levels. Alerts were set for unusual strain spikes, helping avert potential failure during record rainfall.
Case Study
Urban Tunnel Monitoring in Toronto
To monitor long-term strain changes near tunnel joints, the City of Toronto used Damage Detection Tech’s strain-based sensors with GAO RFID wireless data loggers. Continuous remote readings helped engineers ensure structural integrity during adjacent excavation work, maintaining public safety.
Ready to implement high-precision strain-based crack monitoring for your projects?
Contact Damage Detection Tech today to speak with our experts. We’ll guide you in selecting the right solutions, customizing integrations, or supporting your structural monitoring goals. Let us help protect your infrastructure with smart, reliable technology.