Materials Testing, Cement Testing Equipment, Quality Control Projects

The next step after video-extensometry is laser video-extensometry which, apart from avoiding the inconvenient of manually specimen marking by adhesive tapes, metallic clips and so on, works at very high temperatures (furnaces up to 1500º C) with very low Lo (> 1mm) and in both directions (tension – compression). The Lo is determined by bright marks emitted by laser diodes and registered by 2 video-cameras (master and slave).

An advance image processing system converts the relative displacement of these marks in a strain signal, which is exported to the materials testing machine control system.

This type of extensometer allows Lo adjustments from 0 to 250 mm, maximum elongation up to 990 mm and measuring precision as per EN 10.002/4 Class 1.

TRANSVERSE EXTENSOMETERS

According to standards: Class 0.5 (EN-10.002-4)

IB/MFI

Axial telescopic extensometer for testing specimens or elements with a large initial gauge length (Lo up to 1,000 mm) and high travel (up to 100 mm), such as cables, chains, wire strands, ropes, slings, belts etc. Due to its special design, it can work in both vertical and horizontal materials testing machines.
The specimen clamping system, with five circular rotating knife edges arranged in a circular arc, at each clamping point, allows to follow, without any difficulty, the movement of the rotation produced in round, twisted or plaited specimens (ropes, cords, wire strands, etc), when subjected to tensile tests.

• Class 0.5 (EN-10.002-4)
• Measurement principle: Inductive
• L0: from 200 to 1,000 mm (depending on the model and options).
• Maximum travel: 20, 40 ad 100 mm (IB/MFI-20, IB/MFI-40 or IB/MFI-100 models).
• Specimen dimensions: from 3 to 35 mm diameter (optionally from 30 to 80 mm diameter).
• Activating force: 100 cN.
• Weight: 700 to 800 or 1,000 g respectively (standard models).

IB/MFHT

Axial extensometer for high temperatures with aluminium oxide measuring arms (up to 1700ºC).

Positioning of L0 by contact of the arms with the specimen with reduced contact pressure (from 50 to 200 cN).

• Class 0.5 (EN 10.002-4).
• Standard gauge length 10 – 15 – 20 – 25 – 30 – 40 – 50 – 60 – 70 – 80 – 90 and 100 mm selected by the user.
• Maximum travel: 3, 8 or 10 mm depending on the length of the arms.
• Activating force 3 - 10 cN

IB/3555

Clip on extensometer, up to 540º C, without any cooling.

This extensometer has been designed to be used directly on specimens exposed to high temperature (up to 540º C) without any cooling. It is specifically designed to work inside environmental chambers, from temperatures slightly above room temperature to 540º C.

It can be only used at particulary dry environments provided that no moisture is absorbed.

Extensometer for high temperature inside a temperature test chamber.

TRANSVERSE EXTENSOMETERS

According to standards: Class 0.5 (EN-10.002-4)

Destined for the measurement of transverse strain of specimens subjected to tensile tests. In combination with the IB/MFL or IB/MFN type axial extensometers, they allow the determination of r- and n- values.

IB/MFQ-AUTOMATIC

Transverse extensometer with pneumatic actioning and two measuring heads (the incorporated electronic system carries out the semi-sum of the two measurements, thus achieving maximum precision).

• Class 0.5 (EN-10.002-4)
• Measurement principle: strain gauge full bridge
• Travel run: 4 mm (6 mm).
• Measurement range: 20.5…16.5 mm.
• For flat specimens of up to 25 mm (1”) width and 0.1 to 6 mm thickness.
• Standard specimens width (B0): 20 + 0.5 mm (it can optionally be supplied with a B0 of 10 mm to 25 mm – 0.5 to 1”.
• Force of measuring pins: 200g
• Compressed air consumption: 1 l/min approx.
• Pneumatic operation pressure: 5 bar approx.
• Weight: 6 kg.

IB/MFQ-H2

It has identical characteristics to the previous model (two measuring heads) but with manual clamping instead of the pneumatic system. In this case the thickness of the specimen ranges from 0.4 to 6 mm.

• Force of measuring pins: 400 g.
• Weight: 120 g.

IB/MFQ-H

Version of the previous model with just one measuring head.

IB/MFQ-R2

A transverse extensometer with manual clamping with two measuring heads for flat and round specimens.

• Flat: from 4 to 25 mm width (optionally up to 50 mm) and up to 20 mm thickness (optionally up to 30 mm).
• Round: from 4 to 25 mm diameter (optionally up to 50 mm).
• Class 0.5 (EN 10.002-4).
• Travel: 4 m (6 mm).
• Linearity: 0.15% of full scale measuring range.
• Output: 2 to 4 mV/V, depending on model.
• Excitation: 5 to 10 VDC recommended, 12 VCC or VCAmax.
• Temperature Range: Standard is -40 °C to +100 ºC
• Weight (approx) 35 g.
• Contact force: adjustable, 200 to 500 g

IB/MFQ-R

Version of the previous model with just one measuring head.

All the models with manual clamping can be supplied in a special version for working in climatic chambers (temperature from +1ºC to +280ºC).

IB/3575

Transverse (diametral) Extensometer.

Designed for general purpose transverse or diametral strain measurement on axially loaded specimens.

Self-supporting on the test sample, these extensometers will work on any width or diameter specimen from 0 to 25 mm. They are commonly used for measurement of Poisson’s ratio, for transverse measurements with anisotropic materials like many composites and for sheet metal testing such as r-value determination. Most often they are used simultaneously with other axial extensometers. This extensometer can be used both in static and dynamic performances.

EXTENSOMETERS UNTIL SPECIMEN FRACTURE

According to standards: Class 0.5 (EN-10.002-4)

To test specimens until break point.

IB/MFL300

Axial extensometer to test specimens until break point, servo-motorised with closed loop control and automatic calibration and zeroing.

Completely computer controlled with L0 position chosen and test piece clamping (opening and closing) carried out totally automatically.

Extremely low clamping force on specimens (25 cN).

• Class 0.5 (EN-10.002-4)along the entire travel.
• Measurement principle: opto-incremental.
• Standard L0 supplied: from 10 to 300 mm (chosen on PC)
• Maximum travel: 300 mm (optionally 500 mm).
• Specimen dimensions:
  • Flat up to 30 x 50 m.
  • Round: up to 80 mm diameter
• Activating force: <1 cN.
• Approx. weight: 30 Kg.

It needs a special mechanical support to be fixed to the materials testing machine.

Latest generation extensometer, with an exceptional precision in all measuring range that allows universal use.

IB/MFN-A

Axial extensometer to test specimens until break point with clamping (opening and closing) and setting at the preset L0 (by mechanical calibrated and inter-changeable limiters) either manually or automatically.

In the automatic version the opening and closing of the measuring arms as well as their setting at the preset L0 by means of interchangeable limits is carried out by an electrically activated motor and all these functions are controlled from a PC.

• Class 0.5 according to EN 10.002/4
• L0 = 50 m (optionally 10 – 15 – 20 – 25 – 30 – 40 – 60 – 70 – 80 – 90 - 100 – 150 – 200 – 220 and 300 mm)
• Specimen dimensions:
  
  • Flat: up to 30 x 70 mm
  • Round: up to 30 mm diameter (optionally up to 60 mm).
• Activating force: 80 cN.
• Weight approx: 15 kg.

It is a combination of two extensometers with two measuring paths:

• Short measuring path(up to 4 mm). Measurement principle: full bridge strain gauge.
• Long measuring path (up to 500 mm and optionally up to 800 mm). Measurement principle: potentiometric.

Especially indicated for the determination of yield points and Young’s modulus with a high precision and very reduced L0 (from 10 mm) as well as for recording long extensions under maximum load and to the breakage of the specimen.

It needs a special mechanical articulate (folding) support for it to be fixed to the testing machine to allow the removal of the extensometer from the area of work.

IB/MFN-B

Axial extensometer until break point that only includes the long measuring path (500 mm and optionally up to 800 mm).

Class 1 EN 10.002/4.

Especially indicated for elastomers and other large extension materials.

IB/MFN-C

Axial extensometer until break point that only includes the short measuring path (4 mm).

Class 0.2 (EN10.002/4).

Especially recommended for the determination of yield points and Young’s modulus as well as elongation at maximum load and at break point whenever these occur within the range of measurement (4 mm).

IB/MFN-D

Digital version of the extensometer until break point IB/MFN. This version incorporates a sole measurement stage of 300 mm instrumented with a Sony digital system.

Class 1 (EN 10.002/4) in all the measurement range (300 mm).

Like all the IB/MFN models, the positioning (via exchangeable calibrated limiters) as well as the opening and closing of the measurement arms can be manual or automatic.

All of the IB/MFN models can be supplied with special measuring arms to allow them to be used in climatic chambers (temperatures from –80ºC to +250ºC)

AXIAL, CLIP-ON EXTENSOMETERS

According to standards: Class 0.5 (EN-10.002-4)

For determination of the Yield Point and Module of Elasticity in metallic specimens.

IB/MFA2

A high precision hand-clamped extensometer, fast and easy to use.

• Class 0.5 (EN-10.002-4)
• Measurement principle: strain gauge full bridge
• Standard initial instrument measuring length (L0): 25, 30 and 50 mm (optionally 36 – 40 – 70 – 75 – 80 - 100 – 120 – 150 – 200 – 250 and 300).
• Maximum travel: 2 mm (3 mm).
• Specimen dimensions:
  • Flat: from 0 to 30 mm x 30 mm. (optionally up to 90 x 90 mm)
  • Round from 0 to 30 mm diameter (optionally up to 90 mm)
• Activating force: 10 – 60 cN.
• Weight: 190 g.

IB/MFA2 - MINI

Lightweight version of the previous version for very small specimens such as wires, ribbon etc.

• Class 0.5 (EN-10.002-4)
• Measurement principle: strain gauge full bridge
• Standard initial instrument measuring length (L0): 10 and 50 mm (optionally 30 – 36 – 40 – 70 – 75 – 80 – 100 – 120 – 150 – 200 – 250 – 300 mm
• Maximum travel: 2 mm (3 mm).
• Specimen dimensions:
  • Flat from 0 to 25 x 25 mm
  • Round from 0 to 25 mm diameter.
• Activating force: 10 – 60 cN.
• Weight: 45 g.

IB/MFA12

High extension and precision hand-clamped extensometer, fast and easy to use.

• Class 0.5 (EN-10.002-4)
• Measurement principle: strain gauge full bridge
• Standard initial instrument measuring length (L0): 25 and 50 mm (optionally 30 – 60 – 80 – 100 – 150 and 200 mm)
• Maximum travel: 12 mm (3 mm).
• Specimen dimensions:
  • Flat: up to 28 X 30 mm (optionally up to 50 mm diameter and 50 x 50 mm)
  • Round: from 0 to 28 mm.
• Activating force: 3 – 7 cN.
• Weight: 95 g.

IB/MFA25

The same characteristics as the previous but with a maximum elongation of 25 mm.

• Class 0.5 (EN-10.002-4)
• Activating force: 3 – 10 cN.

IB/3800 - High Elongation Extensometer

Designed for plastics, rubber and elastomer testing, these extensometers have very long measuring ranges. Their unique design allows testing to failure and minimizes interaction with the sample.

• Linearity: 0.15%
• Output: 2 to 5 VDC, depending on model (at 10 VDC input ). Optional: 2 mV/V.
• Input: 10 Vdc (typical), 15 Vcc or VCA max.
• Unidirectional displacement (only tension)
• Operating force: 10-20 grams.

IB/MFA20

High elongation, extremely robust, fast and easy to use hand-clamped extensometer.

• Class 0.5 or 1.0 (EN-10.002-4)
• Measurement principle: inductive
• Standard L0 supplied: 50 to 100 mm (in 5 mm steps) optionally from 40 to 200 mm
• Maximum travel: 20 mm (3 mm).
• Specimen dimensions:
  • Flat: from 15 x 1 mm to 30 x 30 mm (optionally up to 40 x 60 mm)
  • Round: from 4 to 30 mm diameter (optionally up to 40 mm diameter)
• Activating force: 150 cN.
• Weight: 470 g.

Specially suitable for construction steel and rough materials samples.