Indirect Measurement of Loading Forces with High-Speed Camera.

Area of Science:

• Engineering
• Materials Science
• Physics

Background:

• Structural Health Monitoring (SHM) systems are increasingly vital for infrastructure.
• Traditional load monitoring relies on direct force sensors or strain gauges, which have implementation limitations.
• Existing indirect methods using response measurements often require extensive sensor networks, posing installation challenges.

Purpose of the Study:

• To present a novel method for identifying excitation forces using contactless measurements.
• To offer a cost-effective and easier-to-implement alternative to traditional sensor-based load monitoring.
• To address the technological difficulties and potential result modification associated with extensive sensor installations.

Main Methods:

• Utilizing a high-speed camera for contactless response measurements.
• Developing algorithms to identify excitation forces based on observed structural responses.
• Comparing the effectiveness of contactless measurements against traditional sensor-based approaches.

Main Results:

• Demonstrated the feasibility of identifying excitation forces through contactless measurements.
• Showcased a potential reduction in installation complexity and cost compared to wired sensor networks.
• Highlighted the ability to overcome limitations where traditional sensors are impractical.

Conclusions:

• Contactless measurements with high-speed cameras offer a promising alternative for force identification in SHM.
• This method can simplify implementation and potentially improve accuracy for slender structures.
• Further research can explore the integration of this technique into comprehensive SHM systems.