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Test principle and product parameter sharing of Japanese original stress instrument

  • Source: Unknown
  • Date: April 28, 2020
  • Number of views: two hundred and four
Japanese original stress meter Test principle and product parameter sharing:
 
Brand supplier: Shenzhen Dongyi Precision Equipment Co., Ltd
 
Japan Gehara stress tester is a kind of surface stress tester, which is mainly used to measure the surface stress of chemically strengthened and physically strengthened glass.
 
The measuring principle of the surface stress instrument is to use the optical waveguide effect of the ion exchange layer on the glass surface to measure. The diverging light from the light source passes through the slit, converges by the high refractive index cylindrical prism and becomes a parallel light. By adjusting the position of the light source, a beam of parallel light can be incident to the interface between the glass and the prism at a critical angle. Due to the stress on the glass surface, the light is decomposed into vector light with two vibration surfaces perpendicular to each other, These two beams of light propagate at different speeds in the ion exchange layer of the glass, so they are refracted to the prism at different total reflection angles. The light emitted from the prism is reflected by the reflector into the interference filter, focused by the telescope system, and then imaged on the reticle after passing through the analyzer to form a light and dark step image. The analysis software can accurately measure the height of steps and the number of step lines to calculate the surface stress intensity and the depth of stress layer.
       
Due to uneven cooling or other reasons such as mechanical action, the internal stress of transparent objects will produce, causing birefringence. The crystal material itself has the optical characteristics of birefringence.
        
The surface stress meter adopts the principle of polarization photoelectric vector synthesis and optical compensation, and determines the size of the stress birefringence of the sample through the quantitative measurement of the optical path difference of the sample. It can accurately measure the optical path difference of optical wave plate and determine the stress level of optical glass. It is an indispensable instrument in optical instrument manufacturing industry and an important tool for studying crystal minerals. Widely used in optical glass, glass products, transparent plastic products industry.
 
This machine is equipped with a computer, which can reduce the error of the measurer and facilitate the management of measurement data. Abundant interfaces, expandable automatic drip system, thickness measurement system. Realize automatic measurement.
 
Product features:
 
1. Measurement principle (photoelastic method and birefringence principle).
 
2. Automatic measurement to reduce personal errors caused by testers.
 
3. Be able to save data with computer for quality management.
 
4. The test portion with poor test conditions can be measured manually.
 
5. LED light source is used, with a long service life of 10000 hours.
 
6. Equipped with glass calibration sheet to ensure the measurement accuracy of the instrument.
 
Product parameters:
 
Measurement range (CS): 0-1500Mpa
 
Measurement accuracy (CS): ± 20Mpa
 
Measurement range (DOL): 10-100 μ m
 
Accuracy (DOL): ± 5 μ m
 
Light source: special LED light wavelength 595 ± 10nm
 
Measurement object: chemically strengthened glass, physically strengthened glass
 
Measuring shape: flat glass 10 × 10mm or above
 
Prism: S-LAL-10 ND=1.72
 
PC: special Dell (Windows 7 operating system, FsmV measurement software)
 
Power supply: AC100-240V 3A
 
Size: 300 × 600 × 250 (measuring host) Weight: 14KG
 
200 × 400 × 400 (PC host) Weight: 5KG
 
250 × 400 × 400 (display) Weight: 3KG
 
The above is about Dongyi Seiko“ Japanese original stress meter ”Test principle and product parameter sharing. The "Japanese original stress gauge" supplied by Dongyi Seiko is not only widely used in optical glass, optical instruments, glass products, plastic products and other industries, but also plays an important role in the inspection of safety and explosion-proof indicators of building materials, lamps, pharmaceuticals, beverages and handicrafts, and has many applications in the fields of crystal jewelry production, geology and mineral resources, and material science. At the same time, the surface stress instrument provided by Dongyi Seiko is also an ideal teaching experimental equipment for colleges and universities.
 

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