Indentation technique provides pipeline integrity monitoring

With the international transportation networks of oil and gas pipelines aging, automated ball indentation (ABI) testing provides a means of monitoring their structural integrity, particularly important in high-consequence areas.Pipeline rehabilitation concerns are coupled with the demands of meeting current and future energy demands by safely increasing transmission throughput. This article describes applications of a stress-strain microprobe (SSM) system using an in situ nondestructive ABI test technique to measure stress-strain curves and fracture toughness properties of in-service steel pipelines.The SSM system provides key mechanical properties (tensile and fracture toughness) from ea...

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