TECHNOFOUR

MagStar

MagStar

MagStar

MagStar instrument combines Magnetic Hysteresis Loop and Magnetic Barkhausen Emission techniques in a single portable instrument

A Portable Magnetic Sensing Device for Non-destructive Evaluation of Steel structures and components

Overview

MagStar is a Magnetic NDE device developed jointly by M/s Technofour, Pune and CSIR-National Metallurgical Laboratory, Jamshedpur. It measures Magnetic Hysteresis Loop (MHL) and Magnetic Barkhausen Emissions (MBE) using a single magnetizing probe. It has also the option for measuring MHL and MBE separately. The device is portable and light weight.

Applications

  • Evaluation of microstructural
    changes during heat-treatment/ageing
  • Determination of ferrite volume fraction
  • Evaluation of ferromagnetic phases and its correlation with mechanical properties (e.g. hardness)
  • Residual stress analysis

Features

  • Magnetic Hysteresis Loop and Magnetic Barkhausen Emission in a single probe
  • Sine wave and Triangle wave excitation
  • Coercivity, Permeability, Remanence measurement with MHL test
  • RMS voltage, Peak voltage, Pulse height distribution and Frequency spectrum readings with Barkhausen Emission test

Technical Data

MHL measurement
     Frequency Range      
50mHz to 200Hz 
     Excitation                    0-1500 Oe
     Wave Shape                Sinusoidal / Triangular

MBE measurement
     Frequency Range      
10Hz to 200 Hz 
     Excitation                    Up to 1500 Oe

Number of cycles            
3 to 10
Gain                                   0 to 20 dB in steps of 1 dB
Filter setting                     10KHz to 300KHz
                                           Independently variable Low pass and High pass
Connectivity                     Ethernet Control     
Display and Analysis       External laptop /computer 
Operating System            Windows

Features

  • Magnetic Hysteresis Loop and Magnetic Barkhausen Emission in a single probe
  • Sine wave and Triangle wave excitation
  • Coercivity, Permeability, Remanence measurement with MHL test
  • RMS voltage, Peak voltage, Pulse height distribution and Frequency spectrum readings with Barkhausen Emission test

Technical Data

MHL measurement: Frequency Range: 50mHz to 200Hz Ι Excitation: 0-1500 Oe Ι Wave Shape: Sinusoidal / Triangular
MBE measurement: Frequency Range: 10Hz to 200 Hz Ι Excitation: Up to 1500 Oe
Number of cycles:
3 to 10
Gain: 0 to 20 dB in steps of 1 dB
Filter setting: 10KHz to 300KHz Ι Independently variable Low pass and High pass
Connectivity: Ethernet Control     
Display and Analysis: External laptop /computer 
Operating System: Windows