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| | | | | | | | | | | | | | | | | | | Zw/ck I Roell | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Macro | Multisens | OptiXtens | Video1) | Mechan. long stroke | Optical long stroke | Laser | | | | Measuring system | Incremental | Incremental21 | Laser- | Image | Incremental | Incremental | Rotational | | | | | | (no marking) | Speckle | processing | | | laser | | | | Measuring range, mm | min. 75 | | 500 - L0 | 50 ... 200 | 1000 - L0 | 1000 - L0 | approx. 400 | | | | | max. 160 | | | (field of view) | | | | | | | Resolution, \xm | 0.12...0.6 | 0.2...0.4 | 0.1 | 1 | 5 | 5 | 12 | | | | Accuracy | Class 1 | Class 1 | Class 0.5 | Class 1 | 1% or | 1% or | Grade B | | | | (ISO 9513) | | | | | 0.01 mm31 | 0.03 mm3) | (ISO 5893) | | | | Gauge length, mm | 10 to | >10 | >10 | >5 mm | 10...1000 | 10...900 | 10 (tensile) | | | | | 100/205 | | | | | | 20 (compr.) | | | | Drag force, N | >0.050 | >0.015 | none | none | >0.20 | none | none | | | | Mot. sensor arm attach. Optional | yes | yes | - | yes | yes | - | | | | Autom. pre-set of L0 | Optional | yes | yes | - | yes | yes | - | | | | 1) Data for 25 mm-lens, 2) 2 measuring ranges, 3) whatever is greater | | | | | | | | | | | | | | | | | | | | | | | | | | | | Indications for the choice of extensometers and deformation transducers | | | | | | | | | | | | | | | | | | | | | | | | Application | | | | Analogue clip-on extensometer Incremental clip-on extensometer | Extensometer type | | | | | | | Test results | Standard | Reduct.-in -width transducer (anal.) | Macro-extensometer Multisens-extensometer OptiXtens extensometer Opt. long stroke extensometer Mech. long stroke extensometer Laserextensometer | Video1)- extensometer | 3-pt flexural transducer | Crosshead travel monitor | | | | | | | | | 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 | - | - OO ^^^^ | • | | | | | | | 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 iSO | 527 604 | - | -- | ------ | | -- •• | | | | 1) = The industrial 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 • = Convienient system | | | | | | | | | | | | | | | | | | | | | | | | 38 | | | | | | | | | | | | | | | | | | |
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