Testing of plastics and rubber - Zwick - #39

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39 Extensometer, technical data Macro multiXtens optiXtens videoXtens1) Mechan. Optical Laser long travel long travel Measuring system Digital Digital2) Laser- Image Digital Digital Rotating Speckle processing laser Measuring range, mm min. 75 700 – L0 500 – L0 50...200 1000 – L0 1000 – L0 approx. 400 max. 160 (field of view) Resolution, ìm 0.12...0.6 0.02...0.04 0.1 1 5 5 12 Accuracy Class 1 Class 0.5/14) Class 0.5 Class 1 1% or 1% or Grade B (ISO 9513) 0.01 mm3) 0.03 mm3) (ISO 5893) Gauge length, mm 10 to >_5 >_10 >_5 10...1000 10...900 >_10 (tensile) 100/205 >_20 (compr.) Drag force, N <_0.050 <_0.015 none none <_0.20 none none Motorized sensor Optional yes yes - yes yes - arm attach. Autom. pre-set of L0 Optional yes yes - yes yes - 1) Data for 25 mm-lens, 2) 2 measuring ranges, 3) whatever is greater, 4) dependent on the feelerarm length Indications for the choice of extensometers and deformation transducers Application Extensometer type Test results Standard Poissons ratio ISO 527 • - - - • - - - - - - - Tensile modulus ISO 527 - • • • • • - - - • - - Compr. modulus ISO 604 - • • • • • - - - - • - Flexural modulus ISO 178 - - - • • - - - - - • x Tensile creep modulus ISO 899-1 - • • • • • - - - • - - Flexural creep modulus ISO 899-2 - - - • • - - - - - • x 3,5% flexural strain ISO 178 - - - • • - - - - - • x Deflection at break ISO 178 - - - • • - - - - - • x Strain at yield point ISO 527 - - º • • • • • - • - - ISO 37 - - - • • • • • • º - - Stress at X% strain ISO 527 - - º • • • • • - • - - ISO 37 - - - º • • • • • • - - Strain at max. force. ISO 527 - - º º • • • • - • - - ISO 37 - - - º • • • • • • - - Strain at max. force, strips ISO 527-3 - - - º • • • • - • - • Strain at break ISO 527 - - º º • • • • - • - - ISO 37 - - - º • • • • • • - - Strain at break, strips ISO 527-3 - - - º • • • • - • - • Nominal strain ISO 527 - - - - - - - - - - - • ISO 604 - - - - - - - - - - - • 1) = The lenses of the video extensometer can not be changed while testing º = Only useful if the strain does not exeed the range of the extensometer x = Measurements using the crosshead displacement show lower results due to the system deformation and contact pressure on the specimen • = Convenient system Analogue clip-on extensometer Incremental clip-on extensometer Macro optiXtens Crosshead travel monitor Laserextensometer Opt. long stroke extensometer videoXtens1) 3-pt flexural transducer Reduct.-in -width transducer (anal.) multiXtens Mech. long stroke extensometer