strain gage measurements - sintechnology.com

SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · [email protected] · www.sintechnology.com

Strain Gage Measurements


Strain gauge measurements

The electrical resistance strain gauge technique is based on measuring the variation in electrical resistance under-

gone 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 measu-

rement 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 trans-

ducers.

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)



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.

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.

Experimental stress analysis

Experimental stress analysis is used to determine the stress states of structures or components subjected to ac-

tual load conditions or for verifying and calibrating finite element calculation models.



SINT Technology employs highly skilled resources who

have expertise in strain gauge applications on field

and in the laboratory.

Installation of strain gauges

Residual stress analysis

SINT Technology is a laboratory specialised in measu-

ring 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 me-

thod, called RESTAN (REsidual STress ANalyser).

Measurement of torque and torsional vibration on rotating shafts

Analysing vibration and torsional resonance is an extremely effective dia-

gnostic tool for identifying abnormal conditions during operation of rota-

ting machinery which can result in damage.

Measurement of torque is used to calculate transmitted mechanical po-

wer.

SINT Technology has telemetry systems and software for performing tor-

sional vibration analyses on a wide variety of machinery.

Strain gauge measurements on

pressure vessels

SINT Technology performs experimental tests on pres-

sure vessels, for example, for determining stresses oc-

curring during hydrostatic testing of components.



Instrumentation

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 cali-

brate 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.

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 sy-

stems

Digital strain indicators

Telemetry systems

Training Courses

SINT Technology is an examination centre recognized by CICPND (the Ita-

lian 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-

sistance strain gauges

UNI 10478:1-2-3-4-5

Residual Stresses Standard Test Method for Determining Residual

Stresses by the Hole-Drilling Strain-Gage method

ASTM E 837-08



Contact Us

Via delle Calandre, 63 - 50041 Calenzano (FI) ITALY

Tel: +39.055.8826302

Fax: +39.055.8826303

www.sintechnology.com

[email protected]

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

strain gage measurements - sintechnology.com

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