Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for evaluating weather resistance of automotive interior decorations by glass lower-temperature-limit test chambers

A technology of automotive interior parts and test chambers, which is applied in the field of product quality inspection and evaluation and quality control, can solve the problems of inability to realize the quality control of weather resistance of automotive interior parts, tests that cannot be carried out, and evaluations that cannot be performed, and achieve widespread promotion and Applicable, easy to operate, and practical effects

Inactive Publication Date: 2017-01-11
CHINA NAT ELECTRIC APP RES INST
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the former method needs to use the car as the installation carrier, the test cost is high, and the test cannot be carried out when there is no prototype car; the latter method can only test the surface gloss, color difference, chalking and other apparent properties of the interior parts. However, the size-related properties such as deformation cannot be evaluated, so that the quality control of the weather resistance of automotive interior parts cannot be achieved

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The present invention utilizes a glass lower limit temperature test box to evaluate the method for the weather resistance of automobile interior parts, comprising the following steps:

[0027] (1) Analyze the service environment conditions of the interior parts in different installation parts of the automobile, and classify the interior parts with similar service environment conditions into the same category; the service environment conditions include the solar spectral distribution and radiation received by the interior parts surface (by The installation position of the interior trim and the type of automotive glass through which the light shining on the interior trim surface is determined) and the surface temperature (especially the highest temperature that the surface can reach). The interior parts classified as the same category refer to the interior parts that receive the same spectral distribution of solar radiation, and the difference in radiation amount and surfa...

Embodiment 2

[0036] The difference between this embodiment and Embodiment 1 is that the interior part is a car coat rack, and the car coat rack is placed in a glass lower limit temperature test chamber, and according to the analysis of its service environment data on the whole vehicle, set The glass type of the upper cover of the glass lower limit temperature test box is transparent tempered glass, the maximum temperature limit in the box is 110°C, and the test cycle is a temperature-corrected radiant energy value of 8400MJ / m 2 , that is, the time elapsed to reach the radiation dose.

[0037] When the test is over, the measured maximum color difference change of the coat rack is 2.78, which is less than the standard limit value of 3.00, but there is a visible change under visual conditions, that is, the surface of the coat rack has obvious pulverization. Weather resistance failed.

Embodiment 3

[0039] The difference between this embodiment and Embodiment 1 is that the interior trim is a door trim, and the door trim is placed in a glass lower limit temperature test chamber, and the lower limit of the glass is set according to the analysis of its service environment data on the vehicle. The glass type of the upper cover of the temperature test chamber is transparent tempered glass, the maximum temperature limit in the chamber is 95°C, and the test cycle is a temperature-corrected radiant energy value of 6300MJ / m 2 , that is, the time elapsed to reach the radiation dose.

[0040] When the test is over, the maximum color difference measured at each part of the door trim is 1.92, which is less than the standard limit value of 3.00, and there is no visible change under visual conditions, that is, the door trim has no other obvious changes in appearance performance, and its weather resistance is judged sex qualified.

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 invention discloses a method for evaluating weather resistance of automotive interior decorations by glass lower-temperature-limit test chambers. The method includes: (1) dividing the interior decorations similar in service environment conditions into identical types; (2) determining test conditions and test cycles of the different types of the interior decorations in the glass lower-temperature-limit test chambers according to natural exposure tests in an automotive typical environment; (3) putting the different types of the interior decorations into the appropriate glass lower-temperature-limit test chambers; (4) starting tests, taking out the interior decorations from the glass lower-temperature-limit test chambers after reaching the test cycles, and detecting and evaluating the weather resistance; determining that the weather resistance of the interior decorations is qualified if no visible appearance change is detected and a detection value is smaller than or equal to a standard limit value, and determining that the weather resistance of the interior decorations is unqualified if visible appearance changes are detected and a detection value is larger than the standard limit value. By adoption of the method, separate evaluation of the weather resistance of the different interior decorations can be realized, and accordingly weather resistance quality control of the automotive interior decorations is realized.

Description

technical field [0001] The invention relates to product quality detection and evaluation and quality control technology, in particular to a method for evaluating the weather resistance performance of automotive interior parts by using a glass lower limit temperature test chamber. Background technique [0002] Weather resistance is the ability of a car to withstand environmental effects, and it is an important quality quality of a car. As we all know, as an outdoor vehicle, a car will inevitably face the test of various environmental factors during its service period, especially the long-term effects of climatic factors such as light, cold and heat, and wind and rain. If the weather resistance is insufficient, it will occur prematurely. The failure of appearance and function will affect the appearance and performance of the car and even cause safety hazards. Statistics from international authoritative automobile quality organizations show that 70% of automobile quality probl...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
CPCG01N17/002G01N17/004
Inventor 张晓东江鲁揭敢新王俊
Owner CHINA NAT ELECTRIC APP RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com