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

Testing device for dynamic venting quality of safety airbag fabric and method thereof

A technology for airbags and testing devices, applied in the direction of analyzing materials, instruments, etc., can solve the problems of unsuitable testing instruments, high price of shock tubes, and large device footprint, and achieve the effects of small size, accurate measurement, and easy operation.

Inactive Publication Date: 2007-05-30
DONGHUA UNIV
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method based on the shock tube experiment can well simulate the deployment of the airbag, and can test the dynamic air permeability of the fabric, but due to the high price of the shock tube and the strong professionalism of use, only relevant scientific research institutions have it, and The device occupies a large area and is not suitable for special testing equipment

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
  • Testing device for dynamic venting quality of safety airbag fabric and method thereof
  • Testing device for dynamic venting quality of safety airbag fabric and method thereof
  • Testing device for dynamic venting quality of safety airbag fabric and method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0047]During the test, the atmospheric temperature was 25°C and the atmospheric pressure was 100kPa. Sample A is nylon 66 plain weave airbag fabric 5, the filament fineness is 350 / 73dtex / f, and the warp and weft density of the fabric is 250×238 threads / 10cm. Make the fabric A to be tested into the required pattern size and fix it at the end of the device. The hole diameter of the selected orifice plate is 3 cm, and the thickness of the film 4 is 15 microns. Fix the orifice plate and film according to the installation requirements. Set the parameters of oscilloscope 7 and coupler 6. When starting the test, open the valve 1 and adjust the trim 2 so that the gas from the air compressor enters the high-pressure air chamber 10 slowly. After the membrane bursts, close the valve.

[0048] The pressure sensor 9 collects the pressure values ​​at different times in the low-pressure gas chamber, amplifies them through the coupler 6, transmits them to the digital oscilloscope 7, and c...

example 2

[0051] During the test, the atmospheric temperature was 25°C and the atmospheric pressure was 100kPa. Sample B is nylon 66 plain weave airbag fabric 5, the filament fineness is 350 / 73dtex / f, and the warp and weft density of the fabric is 260×256 threads / 10cm. Make the fabric B to be tested into the required pattern size and fix it at the end of the device. The hole diameter of the selected orifice plate is 3 cm, and the thickness of the film 4 is 12 microns. Fix the orifice plate and film according to the installation requirements. Set the parameters of oscilloscope 7 and coupler 6. When starting the test, open the valve 1 and adjust the trim 2 so that the gas from the air compressor enters the high-pressure air chamber 10 slowly. After the membrane bursts, close the valve.

[0052] The pressure sensor 9 collects the pressure values ​​at different times in the low-pressure gas chamber, amplifies them through the coupler 6, transmits them to the digital oscilloscope 7, and ...

example 3

[0055] During the test, the atmospheric temperature was 25°C and the atmospheric pressure was 100kPa. Sample C is nylon 66 plain weave airbag fabric 5, the filament fineness is 479 / 72dtex / f, and the warp and weft density of the fabric is 216.5×216.5 threads / 10cm. Make the fabric C to be tested into the required pattern size and fix it at the end of the device. The hole diameter of the selected orifice plate is 2 cm, and the thickness of the film 4 is 15 microns. Fix the orifice plate and film according to the installation requirements. Set the parameters of oscilloscope 7 and coupler 6. When starting the test, open the valve 1 and adjust the trim 2 so that the gas from the air compressor enters the high-pressure air chamber 10 slowly. After the membrane bursts, close the valve.

[0056] The pressure sensor 9 collects the pressure values ​​at different times in the low-pressure gas chamber, amplifies them through the coupler 6, transmits them to the digital oscilloscope 7, ...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a testing device and method of safe gasbag fabric dynamic breathability that comprises valve, minitrim, manometer, Mylar, coupler, digital storage oscillograph, pressure sensor, plenum chamber, low-pressure chamber. The valve is connected with the plenum chamber via the minitrim and the manometer, the Mylar is set between the plenum chamber and the low-pressure chamber, the output of the low-pressure chamber is connected with the fabric to be measured. The valve is opened, the minitrim is adjusted to make the air come from the air compressor enter the plenum chamber slowly, the film is blasted, the valve is closed; the pressure sensor collects the time-varying signal of the plenum chamber and the low-pressure chamber, the signal is amplified by the coupler and then transferred to the digital storage oscillograph where it is transformed into digital signal, then the digital signal is sent to computer to be processed. The device has little volume, accurate measurement and simple operation.

Description

technical field [0001] The invention relates to a device and method for testing air permeability of airbag fabric, in particular to a device and method for testing dynamic air permeability of airbag fabric. Background technique [0002] At present, the instrument for measuring the dynamic air permeability of airbag fabrics is the AIRBAG-TESTER produced by Textest AG. This test instrument generates an inflating airflow through two air chambers connected by a high-speed solenoid valve. When the pressure of the high-pressure air chamber reaches the required value At this time, the solenoid valve is opened, and the air flow reaches the fabric through the low-pressure air chamber, and then flows out through the fabric. By testing the curve of the pressure in the air chamber changing with time during this process, the dynamic air permeability of the fabric can be measured. AIRBAG-TESTER has five test heads, each of which has a different volume, and the corresponding test head sho...

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): G01N7/10
Inventor 王新厚刘春娜
Owner DONGHUA UNIV
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