Restan MTS3000: the measurement system

The MTS3000 or RESTAN (Residual Stress Analyzer) is an instrument designed for measuring residual stresses by the hole drilling strain gage method, developed and patented by SINT Technology.

Key features of the system are:

  • High-speed drilling technology (350,000-400,000 rpm), with a compressed air turbine
  • Straightforward, automatic and fast to use
  • Suitable for both laboratory and on-site applications
  • Evaluation of residual stresses in depth
  • Possibility to choose between data processing and analysis methods (ASTM E837-13, Integral method, Kockelmann method)

The MTS3000 system consists of:

  • an optical alignment system (to align the drilling axis to the rosette centre)
  • high speed air turbine drilling system (to physically make the hole)
  • an electronic control unit (that controls the alignment-drilling system and
    the measurements by analog amplifiers)
  • a control software hole drilling operating (enabling /disabling the
    automatic drilling)
  • a software to process the acquired data (allowing residual stress to be
    calculated and determined by different methods)

 The system offers a lot of advantages:


  • Automatic acquisition of strains
  • Running of testing, data processing and corrections executed by PC
  • The microscope and drilling tool are both fitted in the same apparatus
  • Automatic determination of the initial drilling point by electrical contact
  • Possibility of measuring the actual hole diameter and eccentricity
  • Possibility of measuring near corners and walls
  • Choice of a wide database of strain gauge rosettes
  • Extension of the ASTM E837-13 standard to all strain gauge rosettes commercially available by means of coefficient matrices calculated by FEM analysis


Residual Stress Measurement - Restan MTS3000 Overview

Restan MTS3000 Brochure