GlasStress portable intelligent stress analyzer SCALP-06

brief introduction

The instrument adopts dynamic laser polarization scattering method to measure the stress state of glass through polarization laser technology, high-speed image acquisition technology and digital polarizer technology. It can measure not only the surface stress, but also the stress distribution of glass in the thickness direction. This instrument has the advantages of small and portable, fast measurement speed and automatic measurement. It can be connected to a laptop or tablet computer for on-site measurement. It is suitable for flat glass, photovoltaic glass and automobile glass with original sheet of float glass and calendered glass. It can effectively measure the surface stress and internal stress distribution of solar energy embossed cover plate glass, and is especially suitable for building curtain wall glass and door and window glass installed on the wall.

principle

When light passes through an isotropic transparent medium, polarization scattering of light occurs due to the action of particles or molecules in the medium. The scattered light perpendicular to the propagation direction is plane polarized light, and its light intensity is related to the nature of the incident light, the astigmatism of the material, and the observation direction. In general, amorphous materials such as plastic, glass and epoxy resin are isotropic They do not produce birefringence, but when they are stressed, they will become anisotropic and show birefringence, This phenomenon is called photoelastic effect.

This instrument adopts the laser polarization scattering method, which is particularly effective for measuring the residual stress of glass and the strain under complex loads. Even for the sudden fracture of materials, it can also give relatively accurate stress distribution diagram, which is an important method for detecting critical stress points and stress concentrations. Using this method, the distribution of stress can be studied quantitatively, and information such as the maximum shear stress and its direction can be obtained.

The stress in the glass causes the glass to have birefringence property and photoelastic effect. At this time, the polarized laser through the glass The birefringence of the beam is related to the stress distribution and the optical refractive index of the material. GlasStress  Portable intelligent stress divider The analyzer adopts a beam 5mW  Polarized laser of, inclined through the tested glass material, in the plane perpendicular to the beam propagation direction At each point, the beam is decomposed into two principal stress directions along the stress state The polarized light component of. These two points There is a phase difference between the quantities, which is proportional to the difference of the principal stress of the photoelastic material, and its value changes along the optical path. Along the beam propagation direction The change of light intensity on is recorded, and the bits of two polarized light components at each pixel in this direction are calculated Phase difference, the stress value of each point can be calculated from the change of phase difference.

model	SCALP-05	SCALP-06
Measuring thickness range	1~5mm	1~6mm
Measuring surface pressure range	＞ 1.0Mpa
measurement accuracy	<1MPa （ Surface stress <4MPa ）， <5% （ Other situations ）
Overall dimension	56*27.5*76mm	100*110*34mm
weight	＜ 250g	＜ 640g
PC interface	USB 2.0
Power Supply	USB bus, 5V, 500mA
Measurable glass	Flat and curved glass（ r > 50mm）
Measurable surface	Air surface, tin surface, embossed surface
testing software	english	in / english
PDA	--	Optional
Operating temperature	+10°C ~ +50°C
Operating humidity	0~90% relative humidity (non condensing)
Restrictions	Can't measure directly Low-E film surface, antireflection film surface, screen printing surface
	Avoid direct light during measurement

Instrument configuration

Hit *No. is a paid option.