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Old 01-30-2008, 05:31 AM
 
Location: Atlanta
282 posts, read 687,985 times
Reputation: 194
Default Late Bridge Inspections

I found this interesting on MSNBC....

Here is the article... Late bridge inspections put public at risk - Bridge Inspections - MSNBC.com

One would think due to weather conditions Maine's bridges would not be past inspection and not ranked 13th in the country for late bridge inspections.

Thoughts?
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Old 07-05-2009, 11:18 AM
 
1 posts, read 958 times
Reputation: 11
NEW TECHNIQUE FOR STEEL BRIDGE INSPECTION

This type of non-destructive method NDT provides the possibility to measure residual stress and the effect of the service load with an impact device and a vibration measurement sensor. Internal stresses are to be considered as the following: 1) Operational strains referring to loads that the material is subject and calculated 2) Residual stresses in the material caused by heat treatments or stresses caused by welding, forging, casting, etc. The new technique is able to measure the applied load and residual stress that are balanced on the surface of the material, and in a relatively large volume, at times even the same size as the entire structures. This stress is part of the metalís elasticity field and has a three axis spatial orientation.This new system, for buildings, bridges steel inspection is very simple for to use , portable ,measure exact values of residual stress due to welding and the applied loads. After many years of research and tests, and between e discover about elastics behavior in field of metal steel now is very practice inspection point to point building and bridge constructions. This new system let bridges steel inspection in very simple mode, is portable instrument and let to measure exact values of residual stress due to welding and the applied loads.

Last edited by 7th generation; 07-05-2009 at 01:51 PM.. Reason: manual sigs are not allowed
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