Bolt tightness inspection system
Steel bridges are constructed by connecting 10-meter-long segments with high-strength bolts. Normally,
several hundred of these bolts are installed in a bridge, and visual inspection and recording the results
requires a huge amount of manpower.
JFE Engineering has therefore developed a bolt inspection system that uses AI to reduce the time required
for the inspection and recording operations. We could achieve a 50% time reduction using this system.
Inspection can be performed with one smartphone.
By uploading images of installed bolts taken with its camera to the cloud, AI determines the bolts’
tightness status and returns them to the smartphone.
We will continue to raise construction efficiency using AI going forward.
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