Material testing

At home with materials from composites to elastomers, Imetrum's measurement systems have been proven to give precision data for a range of demanding materials. View our material testing products page.

Multiple point-to-point measurements

The strain, displacement, extension or rotation between two points can be monitored as with a traditional extensometer, allowing measurements to be compared to historic data. Multiple points can be monitored for average strain, checking for equal stress distributions or focusing on different parts of a component.

Certified ASTM Class B-1 & 0.5 accuracy

Our systems are routinely certified as ASTM E-83 class B-1 & ISO 9513 class 0.5 extensometers, right down to 6mm Gauge Lengths and for strains below 1%. Certain extensometers are also capable of meeting class ISO 9513 class 0.2. This ensures your pre-yield measurements are accurate and repeatable.

Zero specimen interference

Past extensometry issues are avoided through the use of our non-contact method. Delicate films and 7µm fibres have been measured where previous methods were too harsh, whilst the repeatability of larger specimens is improved through the removal of contact slipping and stress concentrations, along with the ability to test any sample through failure.

Gauge lengths of 100µm to 1m

Imetrum offers a number of lens options to accommodate for a wide range of tests. Material testing lenses can offer resolutions better than 5µε for small gauge lengths, whilst the standard lenses offer resolutions of 20µε for higher gauge length samples with extreme elongations.

Simple test frame interfacing

With the ability to output a 10VDC signal, our systems can give out strain data to feed in to common system controls. Similarly, they can read the digital outputs from the machines in order to log them alongside the measurements.

Videos

Full Wire Setup

Lap Joint with Strain Map

Automatic Measurement of Crack Length on Composite DCB Specimen

Case Studies

CS104 - Consolidation and shrinkage in composites manufacture

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CS106 - In-situ measurement of shear strains in bonded joints

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