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Innovative technologies for nondestructive determination of fracture toughness for pipeline steels in transportation infastructure

Award Information
Agency: Department of Transportation
Branch: N/A
Contract: 6913G619C100052
Agency Tracking Number: 180PH1002II
Amount: $989,100.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: 180-PH1
Solicitation Number: N/A
Solicitation Year: 2019
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-07-26
Award End Date (Contract End Date): 2021-07-25
Small Business Information
2940 Perrowville Rd
Forest, VA 24551-2225
United States
DUNS: 002511439
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Syed Ali
 Principal Research Engineer
 (434) 948-1301
Business Contact
 Borja Lopez
Title: President & CEO
Phone: (434) 948-1301
Research Institution

In the inspection and quality assurance framework, coercimetry refers to non-destructive testing of mechanical properties based on measurements of the magnetic characteristics of a metal. This technology relies on the continuous and noticeable (100-400%) increase in the magnitude of the coercivity, while the metal passes from as-delivered to its final state. As both magnetic and mechanical properties are determined by intrinsic microstructure, it is possible to formulate empirically calculated correlations between them.
This technology is widely used to assess fatigue state on metal pipes (Bezlyudko et al., 2010), but has never been used to evaluate fracture toughness. Having overcome the fundamental philosophical dilemma of characterizing limit properties through nondestructive methods, coercimetry offers a solid ground base for the development of the proposed innovative solution.
COMET’s main objective is to develop the first coercimetry-based fracture toughness assessment solution. Phase I demonstrated the technical feasibility of a non-destructive testing solution, based on coercivity metering, to assess material fracture toughness of steel pipelines; evaluating the correlation between coercivity and facture toughness. Phase II will empirically stablish a correlation model between coercivity and fracture toughness trough extensive laboratory trials and develop a first prototype for field deployment. The scope of the project includes testing in samples of different materials subject to at least 5 different heat treatments, and also measurements on samples under load, a representative state of in-service pipelines.

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