Resource Center
Tune in here to MMT’s resources discussing the latest PHMSA Mega Rule (RIN 2) updates, nondestructive testing, material verification and other important industry-critical information.
A New Method for Evaluating the Plastic Properties of Materials Through Instrumented Frictional Sliding Tests
Abstract: Frictional normal contact probing methods involving instrumented, depth-sensing indentation can be used to estimate the mechanical properties of small-volume structures and materials such as thin films and components of micro-electro-mechanical systems. This paper describes a new method for estimating the plastic properties, i.e. the yield strength and strain hardening exponent, of ductile materials from […]
Read More Nondestructive Evaluation for Yield Strength and Toughness of Steel Pipelines
Abstract: Material mechanical property data including fracture toughness help address potential integrity threats such as material loss through corrosion, stress corrosion cracking (SCC), and fatigue. Inthe-ditch (ITD) nondestructive evaluation (NDE) of mechanical properties has expanded beyond traditional hardness testing to provide measurements of strength and fracture toughness of metals without the need for sample removal […]
Read More Calibration of a Nondestructive Toughness Tester (NDTT) For Measuring Fracture Toughness of Pipeline Steel
Abstract: In-ditch/in-service characterization of pipelines using nondestructive evaluation (NDE) can provide valuable data for confirming operating pressure and qualifying pipelines for transporting natural gas of different quality or gas mixture, as well as for determining repair criteria for integrity management programs. This is especially relevant for vintage pipelines that may not have material test reports […]
Read More Nondestructive Classification of LF, HF, and HF-Normalized Electric-Resistance-Welded (ERW) Longitudinal Seams
Abstract: A nondestructive assessment of electric-resistance-welded (ERW) seam types through in-situ inspection can provide valuable data for pipeline integrity programs. The durability of ERW seams is known to depend on pipe manufacturing practices that have evolved over decades. However, for pipelines that have incomplete or missing material test reports (MTRs), there is no method to […]
Read More Nondestructive Evaluation of Metal Strength, Toughness, and Ductility Through Frictional Sliding
Absract: Traditional assessment of mechanical properties requires the removal of a standardized specimen for destructive laboratory testing. A nondestructive in-situ method is a costeffective and efficient solution for applications where sample cutouts are not feasible. This work describes developments in contact mechanics that use frictional sliding to evaluate the material strength and toughness of steel […]
Read More Integrated Material Property Verification – Combining State-of-the-Art ILI and In-Ditch Testing
Abstract: Driven by safety and added regulatory requirements, operators are working diligently to characterize the material properties of pipe within their assets. Opportunities to remove pipe from the ground and perform traditional mechanical testing in a laboratory are limited. Fortunately, operators are able to use a combination of enhanced ILI and state-of-the-art in-ditch testing to […]
Read More A Statistical Approach to Material Verification of Expected Grade Through Opportunistic Field Measurements
Abstract: Material verification is the process of measuring material property data on in-service pipelines when existing records are not traceable, verifiable, and complete (TVC). The new regulations for gas transmission pipelines include §192.607 which provides requirements for a material verification process. This work describes a statistical approach to meet these provisions by achieving a 95% […]
Read More Technology Meets Mega Rule Materials Verification Challenge Head On
Click to read: “Technology Meets Mega Rule Materials Verification Challenge Head On” P. Patel, B. Powers
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Competent Field Technicians a Major Priority at MMT
MMT’s updates to the HSD Training and Certification Program improves the reliability of data collection and reporting results for NDE service partners and their customers. MMT updated its Hardness, Strength and Ductility (HSD) Training and Certification Program as part of its multi-faceted approach to provide industry-leading support to NDE service partners. The newly released HSD Training and […]
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