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MWM Array Bending Stress and Crack Detection In-Line Inspection Module

Award Information
Agency: Department of Transportation
Branch: N/A
Contract: 6913G621C100016
Agency Tracking Number: DOT-20-PH1-003-II
Amount: $985,365.25
Phase: Phase II
Program: SBIR
Solicitation Topic Code: 20-PH1
Solicitation Number: 6913G620QSBIR1
Solicitation Year: 2020
Award Year: 2021
Award Start Date (Proposal Award Date): 2021-08-20
Award End Date (Contract End Date): 2023-08-22
Small Business Information
121 Bartlett Street
Marlborough, MA 01752
United States
DUNS: 018791827
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Todd Dunford
 (781) 577-2315
Business Contact
 Zachary Thomas
Title: Vice President, Operations and In-House Counsel
Phone: (781) 373-9722
Research Institution

In-line inspection (ILI) is a cornerstone for pipeline integrity. Advances to ILI tools are essential to maintaining pipeline safety. Gaps exist for the detection of circumferential cracking (at and away from welds and dents) and bending stresses. Few technologies exist that can make reputable claims for stress measurement that are non-destructive, reliable, and appropriate for integration onto an ILI tool.One promising method for stress measurement uses the relationship between the magnetic permeability of steel and applied stresses. This relationship is complex and directional in nature, which makes it difficult to measure using sensors that can be mounted to an ILI tool.JENTEK’s MWM Array sensors can solve both the cracking problem (circumferential and axial) and the bending stress problem. MWM Arrays have a proven record for crack detection and JENTEK has made significant progress toward integrating this capability onto an ILI tool. MWM Arrays also provide absolute property measurements, making them ideal for measuring the directional magnetic permeability that is required to take advantage of the relationship between magnetic permeability and stress. While general-purpose, local stress estimation remains the subject of basic research, bending stresses can be estimated by making use of apriori knowledge of the stress pattern.

* Information listed above is at the time of submission. *

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