Concurrent ultrasonic weld evaluation system

Hood, Donald W; Johnson, John A; Smartt, Herschel B

Title: Concurrent ultrasonic weld evaluation system

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Abstract

A system for concurrent, non-destructive evaluation of partially completed welds for use in conjunction with an automated welder. The system utilizes real time, automated ultrasonic inspection of a welding operation as the welds are being made by providing a transducer which follows a short distance behind the welding head. Reflected ultrasonic signals are analyzed utilizing computer based digital pattern recognition techniques to discriminate between good and flawed welds on a pass by pass basis. The system also distinguishes between types of weld flaws.

Inventors:

Hood, Donald W ^[1]; Johnson, John A ^[1]; Smartt, Herschel B ^[1]

Idaho Falls, ID

Issue Date:: 1987-01-01

Research Org.:: EG & G IDAHO INC

OSTI Identifier:: 866445

Patent Number(s):: 4712722

Assignee:: EG&G, Inc. (Wellesley, MA)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

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B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
B23K11/25 - Monitoring devices
B23K9/0956 - {using sensing means, e.g. optical}

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2291/044 - Internal reflections
G01N2291/267 - Welds
G01N29/11 - by measuring attenuation of acoustic waves
G01N29/30 - Arrangements for calibrating or comparing, e.g. with standard objects
G01N29/4445 - {Classification of defects}

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DOE Contract Number:: AC07-76ID01570

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: concurrent; ultrasonic; weld; evaluation; non-destructive; partially; completed; welds; conjunction; automated; welder; utilizes; time; inspection; welding; operation; providing; transducer; follows; distance; head; reflected; signals; analyzed; utilizing; computer; based; digital; pattern; recognition; techniques; discriminate; flawed; pass; basis; distinguishes; types; flaws; completed weld; pattern recognition; ultrasonic signal; partially completed; ultrasonic inspection; ultrasonic signals; non-destructive evaluation; reflected ultrasonic; sonic signals; welding operation; automated welder; completed welds; sonic signal; concurrent ultrasonic; /228/

Citation Formats


                    Hood, Donald W, Johnson, John A, and Smartt, Herschel B. Concurrent ultrasonic weld evaluation system.  United States: N. p., 1987. 
        Web.

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                    Hood, Donald W, Johnson, John A, & Smartt, Herschel B. Concurrent ultrasonic weld evaluation system.  United States.

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                    Hood, Donald W, Johnson, John A, and Smartt, Herschel B. Thu .  
        "Concurrent ultrasonic weld evaluation system".  United States.  https://www.osti.gov/servlets/purl/866445.

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@article{osti_866445,

  title        = {Concurrent ultrasonic weld evaluation system},

  author       = {Hood, Donald W and Johnson, John A and Smartt, Herschel B},

  abstractNote = {A system for concurrent, non-destructive evaluation of partially completed welds for use in conjunction with an automated welder. The system utilizes real time, automated ultrasonic inspection of a welding operation as the welds are being made by providing a transducer which follows a short distance behind the welding head. Reflected ultrasonic signals are analyzed utilizing computer based digital pattern recognition techniques to discriminate between good and flawed welds on a pass by pass basis. The system also distinguishes between types of weld flaws.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1987},

  month        = {1}

}

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A system for concurrent, non-destructive evaluation of partially completed welds for use in conjunction with an automated welder. The system utilizes real time, automated ultrasonic inspection of a welding operation as the welds are being made by providing a transducer which follows a short distance behind the welding head. Reflected ultrasonic signals are analyzed utilizing computer based digital pattern recognition techniques to discriminate between good and flawed welds on a pass by pass basis. The system also distinguishes between types of weld flaws.
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A system for concurrent, non-destructive evaluation of partially completed welds for use in conjunction with an automated welder is disclosed. The system utilizes real time, automated ultrasonic inspection of a welding operation as the welds are being made by providing a transducer which follows a short distance behind the welding head. Reflected ultrasonic signals are analyzed utilizing computer based digital pattern recognition techniques to discriminate between good and flawed welds on a pass by pass basis. The system also distinguishes between types of weld flaws. 5 figs.

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