Cavitation erosion of polyethylene and chloroprene rubber for liners
Resin lining is widely used as an anti-corrosion method for steel pipes. Since cavitation sometimes occurs near valves in piping system, it is necessary to consider not only the corrosion resistance but also the erosion resistance. The mechanical properties of the polymeric material change in variou...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2015-03-01
|
| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/81/824/81_14-00526/_pdf/-char/en |
| _version_ | 1798018087768817664 |
|---|---|
| author | Shuji HATTORI Eisuke BENITANI Wenxiang RUAN Yasuharu SUDA Ryota TAKEUCHI Tomokazu IWATA |
| author_facet | Shuji HATTORI Eisuke BENITANI Wenxiang RUAN Yasuharu SUDA Ryota TAKEUCHI Tomokazu IWATA |
| author_sort | Shuji HATTORI |
| collection | DOAJ |
| description | Resin lining is widely used as an anti-corrosion method for steel pipes. Since cavitation sometimes occurs near valves in piping system, it is necessary to consider not only the corrosion resistance but also the erosion resistance. The mechanical properties of the polymeric material change in various production methods, such as catalyst, density and mixing of the elastomer. However, few researches have been conducted from this point. In this paper, we examined the relationship between the mechanical properties and the erosion rate of a chloroprene rubber and a number of polyethylene materials produced by different methods. Power plants are operating for a long period. We examined the effect of aging by testing the aged material intended for usage in piping of power plant. We carried out the cavitation erosion tests by using a flowing apparatus as specified in the ASTM G134-95. Cavitation erosion of polyethylene occurred at 150 m/s or more. The flow velocity at 150 m/s and test time for 24hours is the appropriate experiment condition for cavitating liquid jet test of polyethylene. The maximum depth of erosion (MaxDER) of polyethylene decreases with the increase in tensile product and hardness. Among all the tested lining materials, the high density polyethylene (m-LLDPE-H) shows the best resistance to cavitation erosion in terms of MaxDE. The effect of aging on the erosion rate of polyethylene was small. |
| first_indexed | 2024-04-11T16:18:07Z |
| format | Article |
| id | doaj.art-d605e63fa7314eeb92a2819ef48b531a |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T16:18:07Z |
| publishDate | 2015-03-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-d605e63fa7314eeb92a2819ef48b531a2022-12-22T04:14:27ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612015-03-018182414-0052614-0052610.1299/transjsme.14-00526transjsmeCavitation erosion of polyethylene and chloroprene rubber for linersShuji HATTORI0Eisuke BENITANI1Wenxiang RUAN2Yasuharu SUDA3Ryota TAKEUCHI4Tomokazu IWATA5Graduate School of Engineering, University of FukuiGraduate School of Engineering, University of FukuiGraduate School of Engineering, University of FukuiLabolatory of Takasago, Mitsubishi Heavy IndustriesLabolatory of Takasago, Mitsubishi Heavy IndustriesLabolatory of Takasago, Mitsubishi Heavy IndustriesResin lining is widely used as an anti-corrosion method for steel pipes. Since cavitation sometimes occurs near valves in piping system, it is necessary to consider not only the corrosion resistance but also the erosion resistance. The mechanical properties of the polymeric material change in various production methods, such as catalyst, density and mixing of the elastomer. However, few researches have been conducted from this point. In this paper, we examined the relationship between the mechanical properties and the erosion rate of a chloroprene rubber and a number of polyethylene materials produced by different methods. Power plants are operating for a long period. We examined the effect of aging by testing the aged material intended for usage in piping of power plant. We carried out the cavitation erosion tests by using a flowing apparatus as specified in the ASTM G134-95. Cavitation erosion of polyethylene occurred at 150 m/s or more. The flow velocity at 150 m/s and test time for 24hours is the appropriate experiment condition for cavitating liquid jet test of polyethylene. The maximum depth of erosion (MaxDER) of polyethylene decreases with the increase in tensile product and hardness. Among all the tested lining materials, the high density polyethylene (m-LLDPE-H) shows the best resistance to cavitation erosion in terms of MaxDE. The effect of aging on the erosion rate of polyethylene was small.https://www.jstage.jst.go.jp/article/transjsme/81/824/81_14-00526/_pdf/-char/encavitation and erosionlife predictionhigh polymer materialshardness |
| spellingShingle | Shuji HATTORI Eisuke BENITANI Wenxiang RUAN Yasuharu SUDA Ryota TAKEUCHI Tomokazu IWATA Cavitation erosion of polyethylene and chloroprene rubber for liners Nihon Kikai Gakkai ronbunshu cavitation and erosion life prediction high polymer materials hardness |
| title | Cavitation erosion of polyethylene and chloroprene rubber for liners |
| title_full | Cavitation erosion of polyethylene and chloroprene rubber for liners |
| title_fullStr | Cavitation erosion of polyethylene and chloroprene rubber for liners |
| title_full_unstemmed | Cavitation erosion of polyethylene and chloroprene rubber for liners |
| title_short | Cavitation erosion of polyethylene and chloroprene rubber for liners |
| title_sort | cavitation erosion of polyethylene and chloroprene rubber for liners |
| topic | cavitation and erosion life prediction high polymer materials hardness |
| url | https://www.jstage.jst.go.jp/article/transjsme/81/824/81_14-00526/_pdf/-char/en |
| work_keys_str_mv | AT shujihattori cavitationerosionofpolyethyleneandchloroprenerubberforliners AT eisukebenitani cavitationerosionofpolyethyleneandchloroprenerubberforliners AT wenxiangruan cavitationerosionofpolyethyleneandchloroprenerubberforliners AT yasuharusuda cavitationerosionofpolyethyleneandchloroprenerubberforliners AT ryotatakeuchi cavitationerosionofpolyethyleneandchloroprenerubberforliners AT tomokazuiwata cavitationerosionofpolyethyleneandchloroprenerubberforliners |