MWM-Array Characterization of Mechanical Damage and Corrosion

Goldfine, Neil; Washabaugh, Andrew; Jablonski, David A.; Dunford, Todd

i

MWM-Array Characterization of Mechanical Damage and Corrosion

2011-02-09
By Goldfine, Neil ; Washabaugh, Andrew ; Jablonski, David A.

File Language:

English

Details

Creators:

Goldfine, Neil ; Washabaugh, Andrew ; Jablonski, David A. ; Dunford, Todd
Corporate Creators:

United States. Dept. of Transportation. Pipeline and Hazardous Materials Safety Administration ; JENTEK Sensors, Incorporated
Subject/TRT Terms:
Resource Type:

Booklet/Pamphlet
Geographical Coverage:

United States
Contracting Officer:

Merritt, James
Corporate Publisher:

United States. Dept. of Transportation. Pipeline and Hazardous Materials Safety Administration
Abstract:

The MWM-Array is an inductive sensor that operates like a transformer in a plane. The MWMArray is based on the original MWM(R) (Meandering Winding Magnetometer) developed at MIT in the 1980s. A rapid multivariate inverse method converts impedance data into images of surface geometry (from the lift-off response), stress and microstructure changes (based on the permeability response) and metal loss from a combination of the lift-off and wall thickness images. Ongoing tasks in the DOT 460 program are to develop (i) enhanced characterization capability for mechanical damage; (ii) low-frequency internal corrosion imaging; (iii) enhanced SCC/ corrosion imaging through coatings (iv) investigate weld inspection capability; (v) scanners and durable packaging for field and (vi) to perform evaluation of capability, transition planning, and begin development of manuals and standards. The option program includes additional tasks with expanded focus on cracks and welds. The MWMArray technology and MR-MWM-Array (that uses solid state sensing elements for deeper penetration) provide both cost reduction through rapid and convenient field inspections and enhanced damage assessment to support safe pipeline operation.
Format:

PDF
Funding:

DOT 460: DTPH56-10-T-000009
Download URL:

https://rosap.ntl.bts.gov/view/dot/34298/dot_34298_DS1.pdf
File Type:

[PDF - 1.05 MB]
Collection(s):

PHMSA Collection ; US Transportation Collection
Main Document Checksum:

urn:sha256:66bb7932a59f403d01007df561408fc599235f87613485017a990343672a69c8

File Language:

English

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