
SMS

Post Tension Wire Break Monitoring
P-TÂ Tendon Wire Break Monitoring
Hawaii- SMS completes the world’s first of its kind and the longest bridge fiber optic structural health monitoring installation.Â
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This project monitors Honolulu’s new elevated rail bridge post-tensioned tendon for wire breaks using hundreds of fiber optic acoustic sensors over 6.3 miles. Â
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After many replacements and three complete tendon failures, the owner realized acoustic monitoring was the only methodology to detect wire breaks before a catastrophic tendon failure.
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Our Helios system is monitoring hundreds of sensors with only one 6.3 mile-long fiber optic cable. This system successfully replaces more expensive electrical sensors that are labor-intensive to install and fail within years.
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Acoustic monitoring tells owners Where, When, and How many Wire Breaks occur to determine it's severity, helping to formulate repair and inspections strategies as effectively as possible.Â



