A study of friction, wear and particulate emissions during the bedding stage of a Cu-free friction material
In this study, the tribological behaviour and airborne particulate emissions during a bedding procedure for a Cu-free friction material for brake applications were investigated. Different tribological stages were identified. During the first stage, called run-in, friction coefficient, system wear, a...
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| Veröffentlicht in: | Wear 2021-12, Vol.486-487, p.204095, Article 204095 |
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| creator | Candeo, S. Nogueira, A.P. Leonardi, M. Straffelini, G. |
| description | In this study, the tribological behaviour and airborne particulate emissions during a bedding procedure for a Cu-free friction material for brake applications were investigated. Different tribological stages were identified. During the first stage, called run-in, friction coefficient, system wear, and emissions increased. At the end of the first stage, the friction coefficient reached a stable value. On the other hand, wear continued to increase, albeit at an increasingly lower rate, and the emissions of airborne particles started decreasing. Subsequently, also system wear and the emission of airborne particles reached a steady-state stage. The obtained results were explained considering the evolution of the characteristics of the friction layer that forms on the friction material during braking.
•Friction coefficient stabilizes after 150 brake stops.•System wear and PM emissions stabilize after 350 brake stops.•During the transition stage the PM emission decreases with the brake stops.•The observed behaviour depends on the characteristics of the friction layer. |
| doi_str_mv | 10.1016/j.wear.2021.204095 |
| format | Article |
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•Friction coefficient stabilizes after 150 brake stops.•System wear and PM emissions stabilize after 350 brake stops.•During the transition stage the PM emission decreases with the brake stops.•The observed behaviour depends on the characteristics of the friction layer.</description><identifier>ISSN: 0043-1648</identifier><identifier>EISSN: 1873-2577</identifier><identifier>DOI: 10.1016/j.wear.2021.204095</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Bedding stage ; Coefficient of friction ; Dynamometer testing ; Friction ; Friction material ; Particulate emissions ; PM emissions ; Tribology ; Wear</subject><ispartof>Wear, 2021-12, Vol.486-487, p.204095, Article 204095</ispartof><rights>2021 Elsevier B.V.</rights><rights>Copyright Elsevier Science Ltd. Dec 15, 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c328t-ff6d822e7a6e669eddbd2cd887394e5a37ab4b45635ce5f8aacbd3094a292c753</citedby><cites>FETCH-LOGICAL-c328t-ff6d822e7a6e669eddbd2cd887394e5a37ab4b45635ce5f8aacbd3094a292c753</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.wear.2021.204095$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,27923,27924,45994</link.rule.ids></links><search><creatorcontrib>Candeo, S.</creatorcontrib><creatorcontrib>Nogueira, A.P.</creatorcontrib><creatorcontrib>Leonardi, M.</creatorcontrib><creatorcontrib>Straffelini, G.</creatorcontrib><title>A study of friction, wear and particulate emissions during the bedding stage of a Cu-free friction material</title><title>Wear</title><description>In this study, the tribological behaviour and airborne particulate emissions during a bedding procedure for a Cu-free friction material for brake applications were investigated. Different tribological stages were identified. During the first stage, called run-in, friction coefficient, system wear, and emissions increased. At the end of the first stage, the friction coefficient reached a stable value. On the other hand, wear continued to increase, albeit at an increasingly lower rate, and the emissions of airborne particles started decreasing. Subsequently, also system wear and the emission of airborne particles reached a steady-state stage. The obtained results were explained considering the evolution of the characteristics of the friction layer that forms on the friction material during braking.
•Friction coefficient stabilizes after 150 brake stops.•System wear and PM emissions stabilize after 350 brake stops.•During the transition stage the PM emission decreases with the brake stops.•The observed behaviour depends on the characteristics of the friction layer.</description><subject>Bedding stage</subject><subject>Coefficient of friction</subject><subject>Dynamometer testing</subject><subject>Friction</subject><subject>Friction material</subject><subject>Particulate emissions</subject><subject>PM emissions</subject><subject>Tribology</subject><subject>Wear</subject><issn>0043-1648</issn><issn>1873-2577</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9UEtLxDAQDqLg-vgDngJe7ZpHk7bgZVl8wYIXPYc0maypu-2apMr-e1NWPHqZGZjvMfMhdEXJnBIqb7v5N-gwZ4TRXErSiCM0o3XFCyaq6hjNCCl5QWVZn6KzGDtCCG2EnKGPBY5ptHs8OOyCN8kP_Q2exLDuLd7pkLwZNzoBhq2PMa8jtmPw_Rqnd8AtWDvNMek1TCIaL8fCBYA_ObzN7OD15gKdOL2JcPnbz9Hbw_3r8qlYvTw-LxerwnBWp8I5aWvGoNISpGyyQWuZsXX-pilBaF7ptmxLIbkwIFyttWktJ02pWcNMJfg5uj7o7sLwOUJMqhvG0GdLxSQRnFRU0oxiB5QJQ4wBnNoFv9VhryhRU6iqU1MOagpVHULNpLsDCfL9Xx6CisZDb8D6ACYpO_j_6D_paoEa</recordid><startdate>20211215</startdate><enddate>20211215</enddate><creator>Candeo, S.</creator><creator>Nogueira, A.P.</creator><creator>Leonardi, M.</creator><creator>Straffelini, G.</creator><general>Elsevier B.V</general><general>Elsevier Science Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20211215</creationdate><title>A study of friction, wear and particulate emissions during the bedding stage of a Cu-free friction material</title><author>Candeo, S. ; Nogueira, A.P. ; Leonardi, M. ; Straffelini, G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c328t-ff6d822e7a6e669eddbd2cd887394e5a37ab4b45635ce5f8aacbd3094a292c753</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Bedding stage</topic><topic>Coefficient of friction</topic><topic>Dynamometer testing</topic><topic>Friction</topic><topic>Friction material</topic><topic>Particulate emissions</topic><topic>PM emissions</topic><topic>Tribology</topic><topic>Wear</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Candeo, S.</creatorcontrib><creatorcontrib>Nogueira, A.P.</creatorcontrib><creatorcontrib>Leonardi, M.</creatorcontrib><creatorcontrib>Straffelini, G.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Wear</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Candeo, S.</au><au>Nogueira, A.P.</au><au>Leonardi, M.</au><au>Straffelini, G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A study of friction, wear and particulate emissions during the bedding stage of a Cu-free friction material</atitle><jtitle>Wear</jtitle><date>2021-12-15</date><risdate>2021</risdate><volume>486-487</volume><spage>204095</spage><pages>204095-</pages><artnum>204095</artnum><issn>0043-1648</issn><eissn>1873-2577</eissn><abstract>In this study, the tribological behaviour and airborne particulate emissions during a bedding procedure for a Cu-free friction material for brake applications were investigated. Different tribological stages were identified. During the first stage, called run-in, friction coefficient, system wear, and emissions increased. At the end of the first stage, the friction coefficient reached a stable value. On the other hand, wear continued to increase, albeit at an increasingly lower rate, and the emissions of airborne particles started decreasing. Subsequently, also system wear and the emission of airborne particles reached a steady-state stage. The obtained results were explained considering the evolution of the characteristics of the friction layer that forms on the friction material during braking.
•Friction coefficient stabilizes after 150 brake stops.•System wear and PM emissions stabilize after 350 brake stops.•During the transition stage the PM emission decreases with the brake stops.•The observed behaviour depends on the characteristics of the friction layer.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.wear.2021.204095</doi></addata></record> |
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| ispartof | Wear, 2021-12, Vol.486-487, p.204095, Article 204095 |
| issn | 0043-1648 1873-2577 |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Bedding stage Coefficient of friction Dynamometer testing Friction Friction material Particulate emissions PM emissions Tribology Wear |
| title | A study of friction, wear and particulate emissions during the bedding stage of a Cu-free friction material |
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