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    Hot Spotting and Judder Phenomena in Aluminum Drum Brakes

    Source: Journal of Tribology:;2003:;volume( 125 ):;issue: 001::page 44
    Author:
    Kwangjin Lee
    ,
    Frank W. Brooks
    DOI: 10.1115/1.1506315
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Hot spotting and judder phenomena were observed in automotive aluminum drum brakes. A vehicle judder test schedule was developed to determine the critical speed for thermoelastic instability (TEI). The brake material properties relevant to the TEI analysis were measured as a function of temperature. The critical speeds for the brake systems with different drum materials were determined by the judder schedule and they are compared with the analytical predictions of Lee (2000). The brake drums and linings were then modified and tested in order to investigate its effects on the hot spotting and judder propensity. The design modifications include brake linings with a different compound, stress-relieved drums, linings with a convex or concave surface finish, three-segmented linings, and linings with a circumferential groove. The linings with a circumferencial groove effectively reduce the size of hot spots and the best judder rating was achieved.
    keyword(s): Friction , Temperature , Aluminum , Vehicles , Automotive brakes , Brakes , Stress , Materials properties , Linings (Textiles) , Braking , Vibration , Design , Disks AND Friction materials ,
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      Hot Spotting and Judder Phenomena in Aluminum Drum Brakes

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/129194
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    • Journal of Tribology

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    contributor authorKwangjin Lee
    contributor authorFrank W. Brooks
    date accessioned2017-05-09T00:11:34Z
    date available2017-05-09T00:11:34Z
    date copyrightJanuary, 2003
    date issued2003
    identifier issn0742-4787
    identifier otherJOTRE9-28712#44_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/129194
    description abstractHot spotting and judder phenomena were observed in automotive aluminum drum brakes. A vehicle judder test schedule was developed to determine the critical speed for thermoelastic instability (TEI). The brake material properties relevant to the TEI analysis were measured as a function of temperature. The critical speeds for the brake systems with different drum materials were determined by the judder schedule and they are compared with the analytical predictions of Lee (2000). The brake drums and linings were then modified and tested in order to investigate its effects on the hot spotting and judder propensity. The design modifications include brake linings with a different compound, stress-relieved drums, linings with a convex or concave surface finish, three-segmented linings, and linings with a circumferential groove. The linings with a circumferencial groove effectively reduce the size of hot spots and the best judder rating was achieved.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleHot Spotting and Judder Phenomena in Aluminum Drum Brakes
    typeJournal Paper
    journal volume125
    journal issue1
    journal titleJournal of Tribology
    identifier doi10.1115/1.1506315
    journal fristpage44
    journal lastpage51
    identifier eissn1528-8897
    keywordsFriction
    keywordsTemperature
    keywordsAluminum
    keywordsVehicles
    keywordsAutomotive brakes
    keywordsBrakes
    keywordsStress
    keywordsMaterials properties
    keywordsLinings (Textiles)
    keywordsBraking
    keywordsVibration
    keywordsDesign
    keywordsDisks AND Friction materials
    treeJournal of Tribology:;2003:;volume( 125 ):;issue: 001
    contenttypeFulltext
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