Strain Gage Measurements
SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · info@sintechnology.com · www.sintechnology.com
SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · info@sintechnology.com · www.sintechnology.com
Strain Gage Measurements
Strain gauge measurements
The electrical resistance strain gauge technique is based on measuring the variation in electrical resistance undergone by a strain gauge grid, which is bonded to the component under analysis and subjected to strain.
It is an extremely versatile test method as it enables the elastic and plastic strain of any material to be obtained in
actual operating conditions, even in hostile environments, with an appropriate choice of components for the strain
gauge installation.
SINT Technology has a long track record in strain gauge measurement and over the years has developed measurement techniques in collaboration with research centres and universities.
SINT Technology performs a wide range of activities in
the strain gauge measurement sector, such as:

Installation, measurement and data analysis
services both in situ and in laboratory

Training and certification of specialists with CIC
PND approved examinations

Production of measuring equipment and transducers.
Our services are characterised by:
 the professionalism guaranteed by highly skilled
engineering technicians
 dynamism and flexibility
 willingness to perform testing on the customer's
plant in all parts of the world
 detailed reporting in accordance with the customer's
requirements and the main international technical
Installation, measurement and analysis services
SINT Technology offers services for many different applications on field and in laboratory, for instance:
 Measurement of static and dynamic strains
 Experimental stress analysis
 Measurement of torque and torsional vibration on rotating shafts
 Strain gauge measurements on pressure vessels
 Residual stress analysis
 Experimental modal analysis
 Installation of strain gauges
 Design and construction of transducers (eg, load cells)
SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · info@sintechnology.com · www.sintechnology.com
Strain Gage Measurements
Measurement of static and dynamic strains
SINT Technology is able to perform static and dynamic measurements, using strain gauges and other types of
sensors. The exerience of the staff and vast array of instrumentation at their disposal makes it possible to carry
out a wide range of applications.
Experimental stress analysis
Experimental stress analysis is used to determine the stress states of structures or components subjected to actual load conditions or for verifying and calibrating finite element calculation models.
Construction of transducers
SINT Technology can produce force and torque transducers, especially designed for specific applications, that are
able to operate in the most diverse conditions.
SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · info@sintechnology.com · www.sintechnology.com
Strain Gage Measurements
Measurement of torque and torsional vibration on rotating shafts
Analysing vibration and torsional resonance is an extremely effective diagnostic tool for identifying abnormal conditions during operation of rotating machinery which can result in damage.
Measurement of torque is used to calculate transmitted mechanical power.
SINT Technology has telemetry systems and software for performing torsional vibration analyses on a wide variety of machinery.
Installation of strain gauges
SINT Technology employs highly skilled resources who
have expertise in strain gauge applications on field
and in the laboratory.
Strain gauge measurements on
pressure vessels
SINT Technology performs experimental tests on pressure vessels, for example, for determining stresses occurring during hydrostatic testing of components.
Residual stress analysis
SINT Technology is a laboratory specialised in measuring residual stress by strain gauge methods. Some of
the main methods are:

the Sachs method, also known as the boring-out
method

Layer removal

Sectioning

Hole-drilling

the ring-core method.
In addition, SINT Technology produces and develops
the only piece of equipment in the world for automatic
measurement of residual stress by the blind hole method, called RESTAN (REsidual STress ANalyser).
SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · info@sintechnology.com · www.sintechnology.com
Strain Gage Measurements
Experimental modal analysis
Modal analysis is used to understand and model the
dynamic behaviour of a structure. It can be carried out
both to determine the natural frequencies and mode
shapes of a structure and to verify accuracy and calibrate a finite element model (FEM). The strain gauge
method can be used in applications where other types
of sensors (for instance, accelerometers) could alter
the dynamic characteristics of the structure.
Instrumentation
SINT Technology can count on an extensive range of instruments for measuring and analysing strain, with a wide
availability of acquisition channels and instrumentation able to cover many types of tests. Some of the instruments
are:
 Multi-channel signal conditioners
(ac and dc)
 Multi-channel data acquisition systems
 Digital strain indicators
 Telemetry systems
Training Courses
SINT Technology is an examination centre recognized by CICPND (the Italian Coordination Center for Nondestructive Testing) for providing first and
second-level certification courses and examinations for electrical resistance
strain gage testing engineers.
SINT Technology is also a member of AIAS (the Italian Association for
Stress Analysis) and periodically organizes courses, study days and work
groups on analysis of the behaviour of materials, components, structures
and systems.
Standards
Field of Application
Description
Standard code
Stress Analysis
Non-destructive tests. Inspection with electrical re-
UNI 10478:1-2-3-4-5
sistance strain gauges
Residual Stresses
Standard Test Method for Determining Residual
ASTM E 837-08
Stresses by the Hole-Drilling Strain-Gage method
SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · info@sintechnology.com · www.sintechnology.com
SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · info@sintechnology.com · www.sintechnology.com
Contact Us
Via delle Calandre, 63 - 50041 Calenzano (FI) ITALY
Tel: +39.055.8826302
Fax: +39.055.8826303
www.sintechnology.com
info@sintechnology.com
VAT IT04185870484
Recognitions
SINT Technology’s test laboratory is accredited to standard ISO/IEC
17025:2005 by the Italian accreditation body ACCREDIA
with
certificate no. 0910
Certification of conformity to the requirements of standard
UNI EN ISO 9001
SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · info@sintechnology.com · www.sintechnology.com