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Sponsored by ASCE's Geo-Institute's Technical Committees

INSTRUCTORS: 
Andrew Yeskoo, Ph.D
Kenichi Soga, Ph.D

Purpose and Background

These presentations were recorded at the 2024 GI Web Conference.

Distributed Fiber Optic Sensing for Geotechnical Applications (1 hour 30 minutes)

This presentation explores the use of fiber optic sensing as a tool for continuous monitoring of geotechnical and civil infrastructure. It introduces the principles of distributed sensing, emphasizing its ability to measure strain, temperature, and vibration over long distances with high spatial resolution. Practical considerations for system design, including cable selection, calibration, and data interpretation, are discussed to ensure successful deployment in challenging environments. Through real-world case studies, the presentation demonstrates the value of fiber optic sensing for monitoring pipelines, rail lines, and levees under distributed hazards such as landslides, fault movements, and subsidence. This session equips its audience with insights into integrating innovative sensing technologies into infrastructure monitoring and resilience strategies.

Benefits and Learning Outcomes

Upon completion of these sessions, you will be able to:

• Explain the principles of Distributed Fiber Optic Sensing (DFOS) technologies and their sensitivity to strain, temperature, and acoustic vibration.
• Describe the advantages of transitioning from discrete to distributed sensing in understanding the real behavior of soil and subsurface structures.
• Identify practical considerations for applying DFOS technologies in geotechnical monitoring projects.
• List geotechnical applications of DFOS technologies, including soil displacement monitoring, geophysical imaging, pile load testing, and thermal modeling, supported by case study examples.

Assessment of Learning Outcomes

Achievement of the learning objectives will be assessed through a short post-test.

Who Should Attend?

• Geotechnical Engineers
• Engineering Geologists
• Owners and Operators of Civil Infrastructure
• Consultants
• Public Agency Staff
• Specialty Contractors

How to Earn your CEUs/PDHs and Receive Your Certificate of Completion

This course is worth 0.2 CEU/2 PDHs. To receive your certificate of completion, you will need to complete a short post-test online and receive a passing score of 70% or higher within 365 days of course purchase.

How do I convert CEUs to PDHs?

1.0 CEU = 10 PDHs [Example: 0.1 CEU = 1 PDH]