Advanced Residual Stress Sensors To Determine Severity Of Steel Pipeline Mechanical Damage
It is well known that mechanical damage is the leading cause of steel pipeline failures. It is less well known, but equally true, that residual stress plays a critical role in the cracking and failure of pipelines. With DOT SBIR funding G2MT has developed an advanced sensor for measuring the residual stress (strain) levels in 3-D on mechanically damaged steel pipelines. The residual stress assessment technology provides a long-awaited replacement for caliper testing of pipeline mechanical damage to improve fitness-for-service assessments and pipeline integrity through in-situ nondestructive analysis.
Residual Stress Dents are among the most common forms of pipeline mechanical damage, yet under current regulations every dent found must be analyzed using antiquated caliper-based measurements to determine if the dent should be repaired or removed. The...

