ASTM WK20631

    New Test Method for Estimation of Breaking Energy for a Tire Deformed by a Slow-Moving Plunger

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    Developed by Subcommittee: F09.30 | Committee F09 | Contact Staff Manager


    1. Scope

    1.1 This test method provides a means to estimate tire plunger energy required to completely penetrate the tread area of an inflated tire as indicated by a rupture, loss of inflation pressure or sudden drop in plunger force. This test method should only be used when the standard test method prescribed in F 414 can not be completed due to bottom out. 1.2 The test requires utilization of a laboratory testing machine capable of slowly penetrating the tread surface of a tire with a plunger having a hemispherical end. 1.3 This test method is applicable to pneumatic tires for vehicles normally used on the road. 1.4 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    This test method establishes a standard procedure of test and provides data that can be related to tire strength, but does not measure tire performance or establish specification or tolerances.


    absorbed; deformed; energy; plunger; tire

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
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    Work Item Status

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    Draft Under Development