UV light-emitting diodes as a radiation source in a device for the artificial weathering of samples

A light-emitting diode, artificial climate technology, applied in the direction of weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc., can solve the problems of inability to adjust optimal conditions, inflexibility, low spectral exposure level, etc.

Active Publication Date: 2005-05-25
阿特莱斯材料检测技术有限公司
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively low magnitude of the spectral exposure on the specimen itself, relatively long exposure times are required
[0007] Another disadvantage of the aforementioned radiation sources commonly used i

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • UV light-emitting diodes as a radiation source in a device for the artificial weathering of samples
  • UV light-emitting diodes as a radiation source in a device for the artificial weathering of samples
  • UV light-emitting diodes as a radiation source in a device for the artificial weathering of samples

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] figure 1 is a longitudinal section showing the artificial weathering sample device according to the present invention.

[0029] A support frame 2 closed in a ring shape is assembled to be rotatable in the weathering chamber 1, and a sample 3 or a workpiece can be supported on its inner wall. The support frame 2 has a particularly circular cross section. By fixing the tubular support 4 to the top wall of the weathering chamber 1, the tubular support 4 is positioned within the support frame 2 and is concentric with it. A flexible printed circuit board 5 is wrapped around the outer periphery of the tubular support 4 and fixed thereto in a suitable manner. The UV light emitting diodes 6 are mounted on the flexible printed circuit board 5 in a regular arrangement by using surface mount technology. The UV light emitting diodes 6 may comprise different types of light emitting diodes with different radiation spectral characteristics. In addition they can be electrically ope...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The xenon radiation source commonly used in weathering detectors was replaced by UV light-emitting diodes (LEDs)6. Can be used to provide a good approximation to the UV component of the solar spectrum, especially when using different types of UV LEDs with different radiation characteristics. Of course other light emitting diodes in the visible spectrum range can also be used to cover other parts of the solar spectrum. The light emitting diodes 6 may be mounted on a flexible printed circuit board 5 which in turn is mounted on the tubular support 4 . Flexible printed circuit boards carrying light-emitting diodes can be placed on other substrates 7 that are flexible in a geometrically stable manner, so that they can be arranged at a uniform distance from a sample of a specific surface topology material, so that the sample can be obtained Uniform exposure.

Description

technical field [0001] The invention relates to a device for artificially weathering samples. In this device, the weather-dependent aging of test samples, in particular test samples of flat material, is evaluated by artificially weathering the test samples. For this purpose, such devices generally have a weathering chamber containing a support for the sample to be aged; and a radiation source for applying radiation, especially UV radiation, to the sample. Background technique [0002] This device for artificially weathered specimens is used to assess the lifetime of materials that are subjected to climatic influences such as sunlight, solar heat, humidity, etc. due to their constant exposure to natural weathering environments during use. In order to obtain a good simulation of natural weathering conditions, the spectral energy distribution of the light generated in the installation should be as close as possible to that in natural solar radiation, for which purpose xenon ra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N17/00
CPCG01N17/004
Inventor 彼得·马奇伯尔德·鲁道夫
Owner 阿特莱斯材料检测技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap