TECHNOFOUR

Serving A Wide Gamut of Industries

Eddy Current, Ultrasonic, MFL, Barkhausen and more..

Techniques

Serving A Wide Gamut of Industries

Eddy Current, Ultrasonic, MFL, Barkhausen and more..

Techniques

Techniques

Serving A Wide Gamut of Industries

Eddy Current, Ultrasonic, MFL, Barkhausen and more..

Eddy Current Technique

Barkhausen Emission Technique

Principle of Eddy Current Testing

A coil energized by alternating current sets up alternating magnetic flux. When this coil is brought close to a conducting surface, eddy currents are induced in it.

Barkhausen Emission Technique

Opposing flux in green

The induced eddy currents in turn set up alternating magnetic flux that opposes the original flux. This is sensed by the coil and can be analyzed to reveal properties of interest such as metal grade, conductivity or defects

Eddy Current Technique

Barkhausen Emission Technique

Principle of Eddy Current Testing

A coil energized by alternating current sets up alternating magnetic flux. When this coil is brought close to a conducting surface, eddy currents are induced in it.

Barkhausen Emission Technique

Opposing flux in green

The induced eddy currents in turn set up alternating magnetic flux that opposes the original flux. This is sensed by the coil and can be analyzed to reveal properties of interest such as metal grade, conductivity or defects

Eddy Current Technique

Barkhausen Emission Technique

Principle of Eddy Current Testing

A coil energized by alternating current sets up alternating magnetic flux. When this coil is brought close to a conducting surface, eddy currents are induced in it.

Barkhausen Emission Technique

Opposing flux in green

The induced eddy currents in turn set up alternating magnetic flux that opposes the original flux. This is sensed by the coil and can be analyzed to reveal properties of interest such as metal grade, conductivity or defects

Eddy Current Technique

Principle of Eddy Current Testing

A coil energized by alternating current sets up alternating magnetic flux. When this coil is brought close to a conducting surface, eddy currents are induced in it.

Opposing flux in green

The induced eddy currents in turn set up alternating magnetic flux that opposes the original flux. This is sensed by the coil and can be analyzed to reveal properties of interest such as metal grade, conductivity or defects

Ultrasonics Technique

Principle of Ultrasonic inspection

Sound waves emitted by a probe are reflected from a boundary where the velocity of sound wave changes on either side of the boundary. This typically happens when there is a discontinuity in the material under test.

Magnetic Flux Leakage Technique

Principle of Magnetic Flux Leakage test

Magnetic lines of flux conform to a flawless ferromagnetic material such as seamless tubes. When a discontinuity is encountered on the OD or ID of the tube, some flux leaks out from the material. A sensor then picks up the aberration to be processed further.

Magnetic Properties Technique

Magnetic Hysteresis Loop

B-H loops reveal magnetic properties of ferromagnetic materials. Coercivity, relative permeability and remanence are the key parameters.  The area enclosed by the B-H loop is also a parameter of interest.

Ultrasonics Technique

Principle of Ultrasonic inspection

Sound waves emitted by a probe are reflected from a boundary where the velocity of sound wave changes on either side of the boundary. This typically happens when there is a discontinuity in the material under test.

Magnetic Flux Leakage Technique

Principle of Magnetic Flux Leakage test

Magnetic lines of flux conform to a flawless ferromagnetic material such as seamless tubes. When a discontinuity is encountered on the OD or ID of the tube, some flux leaks out from the material. A sensor then picks up the aberration to be processed further.

Magnetic Properties Technique

Magnetic Hysteresis Loop

B-H loops reveal magnetic properties of ferromagnetic materials. Coercivity, relative permeability and remanence are the key parameters.  The area enclosed by the B-H loop is also a parameter of interest.

Ultrasonics Technique

Principle of Ultrasonic inspection

Sound waves emitted by a probe are reflected from a boundary where the velocity of sound wave changes on either side of the boundary. This typically happens when there is a discontinuity in the material under test.

Magnetic Flux Leakage Technique

Principle of Magnetic Flux Leakage test

Magnetic lines of flux conform to a flawless ferromagnetic material such as seamless tubes. When a discontinuity is encountered on the OD or ID of the tube, some flux leaks out from the material. A sensor then picks up the aberration to be processed further.

Magnetic Properties Technique

Magnetic Hysteresis Loop

B-H loops reveal magnetic properties of ferromagnetic materials. Coercivity, relative permeability and remanence are the key parameters.  The area enclosed by the B-H loop is also a parameter of interest.

Barkhausen Emission Technique

Barkhausen signals

Each time an alternating magnetic field applied to a ferromagnetic material changes direction, the ferromagnetic domains change orientation suddenly.  This results in Barkhausen emission that can be analyzed to reveal tensile stress

Probe Array Technique

Circular Eddy Current Array

An array of Eddy Current probes can be arranged around any shape or profile so that the part can be inspected quickly without rotating or scanning in a zig-zag manner. 3D scans provide a visual map of the surface under test.

Remote Field Technique

Principle of Remote Field Eddy Current tests

Typically used for in-service inspection of ferromagnetic heat exchangers.  The field inside a tube quickly dissipates due to eddy currents in the tube.  Some field leaks out and re-enters the tube in the far field.

Barkhausen Emission Technique

Barkhausen signals

Each time an alternating magnetic field applied to a ferromagnetic material changes direction, the ferromagnetic domains change orientation suddenly.  This results in Barkhausen emission that can be analyzed to reveal tensile stress

Probe Array Technique

Circular Eddy Current Array

An array of Eddy Current probes can be arranged around any shape or profile so that the part can be inspected quickly without rotating or scanning in a zig-zag manner. 3D scans provide a visual map of the surface under test.

Remote Field Technique

Principle of Remote Field Eddy Current tests

Typically used for in-service inspection of ferromagnetic heat exchangers.  The field inside a tube quickly dissipates due to eddy currents in the tube.  Some field leaks out and re-enters the tube in the far field.

Barkhausen Emission Technique

Barkhausen signals

Each time an alternating magnetic field applied to a ferromagnetic material changes direction, the ferromagnetic domains change orientation suddenly.  This results in Barkhausen emission that can be analyzed to reveal tensile stress

Probe Array Technique

Circular Eddy Current Array

An array of Eddy Current probes can be arranged around any shape or profile so that the part can be inspected quickly without rotating or scanning in a zig-zag manner. 3D scans provide a visual map of the surface under test.

Remote Field Technique

Principle of Remote Field Eddy Current tests

Typically used for in-service inspection of ferromagnetic heat exchangers.  The field inside a tube quickly dissipates due to eddy currents in the tube.  Some field leaks out and re-enters the tube in the far field.

Barkhausen Emission Technique

Barkhausen signals

Each time an alternating magnetic field applied to a ferromagnetic material changes direction, the ferromagnetic domains change orientation suddenly.  This results in Barkhausen emission that can be analyzed to reveal tensile stress

Probe Array Technique

Circular Eddy Current Array

An array of Eddy Current probes can be arranged around any shape or profile so that the part can be inspected quickly without rotating or scanning in a zig-zag manner. 3D scans provide a visual map of the surface under test.

Remote Field Technique

Principle of Remote Field Eddy Current tests

Typically used for in-service inspection of ferromagnetic heat exchangers.  The field inside a tube quickly dissipates due to eddy currents in the tube.  Some field leaks out and re-enters the tube in the far field.

Industry 4.0 Integration

Technofour GX series systems are Industry 4.0 ready.

Technofour’s GX series systems come with built-in OPC-UA servers for ready integration into your Industry 4.0 environment.

Barkhausen Emission Technique

Technofour GX series systems are Industry 4.0 ready.

Technofour’s GX series systems come with built-in OPC-UA servers for ready integration into your Industry 4.0 environment.

scroll up