Ultrasonic Device for Applied and Residual Stresses Measurement
UltraMARSTM – 7D
The portable, semi-automatic device for Ultrasonic Measurements
of Applied and Residual Stress
(UltraMARSTM)
is designed for measurement of averaged through-thickness and surface residual
and applied stresses in samples, parts, welded elements and structures
non-destructively.
Figure 1. Portable Ultrasonic Device for non-destructive Stress Measurement
UltraMARSTM
device is used to provide the following measurements:
 Magnitude and
sign of uni- and biaxial applied and residual stresses in samples and real
structural elements.
Uniaxial
stresses and forces in pins and bolts.
Parameters of
the acoustic-elastic characteristics of materials.
Residual stress
change as a result of post-welding treatment and service loading.
The thickness of
parts and structural elements.
Young Modulus
and Poisson Ratio
The main technical
characteristics of the UltraMARSTM device:
Stress can be
measured in materials with thickness 2 - 150 mm.
Error of stress
determination (from external load): 5 - 10 MPa.
Error of residual
stress determination: 0.1 σy (yield strength) MPa.
Stress and force
measurement in fasteners (pins) 25-1000 mm long.
Option of using
with independent power supply (accumulator battery 12 V).
Overall dimensions
of the measurement device: 330x215x165 mm.
Weight of the
measurement unit with transducers: 7.7 kg.
The supporting software allows
controlling the measurement process, storing the measured and other data and
calculating and plotting the distribution of residual stresses. The software
also allows an easy connection with standard PC’s.
UltraMARSTM device could be used to
determine the stresses in parts and structural elements in laboratory and field
conditions.
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