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Equipment Overview:
The transverse video extensometer is composed of camera, double telecentric lens, prism, parallel light source, light source controller, etc., which can measure the deformation of the width direction of the sheet in real time. Combined with the lever longitudinal extensometer, it can automatically measure the mechanical tensile properties of the metal sheet such as n value and r value。
特点:
1) Non-contact measurement, overcome the impact of the high strength plate breaking instantaneous vibration on the measurement results of the eight-claw contact transverse extensor, measurement is more accurate;
2) Fewer parts, convenient debugging and maintenance;
3) To avoid the mechanical contact transverse extensometer claw following inflexibility, resulting in inaccurate measurement of the width direction;
4) Avoid the influence of mechanical contact transverse extensometer claw grip force on A (elongation after breaking)。
Implementation standards:
GB/T 5028-2008 "Determination of tensile Strain hardening Index (n value) of metal sheet and thin strip"
GB/T 5027-2016 "Determination of Plastic strain ratio (R-value) of metal sheet and thin strip"
Main technical parameters:
Equipment component | Technical project | Technical parameter |
相机 | Target size | 1” |
像素 | 500万 | |
Photosensitive chip type | CCD | |
Horizontal/vertical resolution | 2590×2408 | |
Horizontal/vertical pixel size | 4.8μm×4.8μm | |
Frame rate | 60fps | |
Black and white/Color | Mono(black and white) | |
接口 | USB3.0 | |
Hd dual telecentric lens | Object field of view FOV(mm) | 32mm*30mm |
Magnification β (X) | 0.34 | |
Object working distance -WD | 138mm | |
Support CCD size (φmm) | 1” | |
Image distortion(%max) | <0.1 | |
Distance of object(°max) | <0.1 | |
Object depth of field DOF(mm) | ±3.0@F11 | |
Parallel light source | 尺寸 | 200×100mm (length × width) |
Sweep for immediate attention
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