| Development of RYD-N International Rubber Hardness Durometer |
| Received:September 14, 2019 Revised:September 14, 2019 |
| DOI：10.12136/j.issn.1000-890X.2019.11.0863 |
| Key Words: international rubber hardness；durometer；two-stage fixed loading；test accuracy |
| Author Name | Affiliation | E-mail | | ZHANG YING* | Beijing Polytechnic | bj-zhangying@163.com | | ZHAO Tangchun | Beijing Polytechnic | | | HUANG Guiyun | Beijing Polytechnic | | | HOU XIANFENG | Beijing Rubberinfo Co. ，Ltd | |
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| Abstract: |
| In this paper，the working principle，design characteristics and performance of the newly
developed RYD-N international rubber hardness durometer were introduced. This durometer used high
hardness alloy steel spherical indentor and two-stage fixed loading，which was easy to operate with high test
accuracy and stability. It reached the advanced world level of similar hardness durometers，and provided a
new instrument for rubber hardness test. |
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