Stress gauge for ultra white rolled photovoltaic glass of solar photovoltaic modules

1. Basic Introduction

Estonia GlasStress Scalp-05Stress gauge for ultra white rolled photovoltaic glass of solar photovoltaic modulesIt is a stress testing instrument used for measuring glass.

2. Technical parameters

• Size and weight:

Small in size, measuring 56 × 28 × 76mm, making it easy to carry to various sites for measurement work.

Weighing only 177 grams, it is very easy to operate.

• Optical and measurement parameters:

The laser wavelength is 635nm, and the laser output power is less than 5mw.

The sensor resolution reaches 1280 × 1024 pixels, which can clearly capture stress image information of glass.

• Measurement performance indicators:

Measurable glass includes flat and curved glass (curvature radius r>300mm or r>50mm, with slight differences in data from different sources).

The measurable surface includes air surface, tin surface, and embossed surface. The measurable thickness range is usually 1-5mm, and the maximum measurable depth can reach 6mm on any thickness of glass.

In terms of measurement accuracy, when the surface stress is less than 4mpa, the accuracy is less than 1mpa; In other cases, the accuracy is less than 5%.

The measurement time is short, it can be completed in 1-6 seconds, with a default of 3 seconds.

• Other parameters:

The communication interface is USB 2.0, powered by USB bus, with a power consumption of only 1.0W.

• Software requirements for Windows 10

3. Working principle

Stress gauge for ultra white rolled photovoltaic glass of solar photovoltaic modulesThe dynamic laser polarization scattering method is used to measure the stress state of glass using polarized laser technology, high-speed image acquisition technology, and digital polarizer technology. When a polarized laser beam passes through glass, the stress in the glass will cause birefringence and produce photoelastic effects. At this point, the laser beam is decomposed into polarized light components along two principal stress directions in a plane perpendicular to the direction of beam propagation. There is a phase difference between these two components that is proportional to the principal stress difference of the photoelastic material, and their values vary along the optical path. The instrument records the changes in light intensity along the direction of beam propagation and calculates the phase difference between the two polarized light components at each pixel point in that direction. The stress values at each point are then calculated based on the changes in phase difference.

4. Product features

Portability: Small in size and light in weight, it can be easily carried to various places such as factory workshops, construction sites, laboratories, etc., meeting the needs of glass stress measurement in different scenarios.

• Easy to operate: The operation process is relatively simple. Clean the glass, drop a drop of immersion liquid, place the instrument in the same position, then click the start button in the software and wait for a few seconds to obtain the stress distribution results.

Fast measurement: Measurements can be completed in a short period of time, which can improve work efficiency and save time costs.

High precision measurement: The measurement accuracy of glass stress is high, which can accurately detect the stress distribution in the glass, providing reliable data support for quality control and performance evaluation of glass products.

5. Application Fields

Automotive industry: used for quality inspection and research and development of automotive glass, ensuring the strength and safety of automotive glass, such as stress measurement of automotive side glass, sunroof glass, etc.

Construction industry: Stress testing can be conducted on building curtain wall glass and door and window glass to evaluate the safety of installation and use of building glass, and to detect whether there are stress concentration issues in the glass already installed on the wall.

Photovoltaic industry: suitable for stress measurement of solar photovoltaic glass, helping to optimize the production process of photovoltaic glass and improve the performance and reliability of photovoltaic modules.

Glass manufacturing industry: used for online inspection and quality control in the glass production process, timely detection of stress defects in glass, and improvement of the quality and yield of glass products.

Technical Indicators: