||ASTM Rubber Committee Will Amend Rebound and Resilience Test Methods
At their June meeting in Norfolk, Va., the ASTM Time and Temperature-Dependent
Physical Properties Subcommittee D11.14 voted to withdraw a previously
proposed rebound resilience method which had been under development
for two years.
The proposed method was being designed to replace ASTM D 2632 (96), Standard Test Method for Rubber Property-Resilience by
Vertical Rebound, and ASTM D 1054 (91), Standard Test Method for Rubber Property-Resilience Using
a Rebound Pendulum. Essential elements of ISO 4662 (86), RubberDetermination
of Rebound Resilience of Vulcanizates, and DIN 53 512 (88), Determination
of Rebound Resilience of Rubber, were also being incorporated
into the new method, said Michael Kent Warner, a member of ASTM
Committee D11 on Rubber.
When development of the new method was withdrawn at the June meeting,
it was decided that D 2632 and D 1054 would remain stand-alone
methods, according to Warner, who is manager of Special Projects,
CCSi, Inc., Akron, Ohio, and chairman of ASTM Task Group D11.14.04.
D 1054 will be revised to include the popular Schob-type pendulum
rebound tester and other essential elements enumerated in ISO
4662 and DIN 53 512, he explained. D 2632 will be revised to
incorporate the description and specifications for the spring
calibration device as well as expanding the calibration procedure,
which was originally developed by Jack Warners TG some five years
Pending the approval of the revisions to D 1054 and D 2632,
he added, new ITPs [interlaboratory test programs] will be undertaken
with the purpose of developing updated Precision and Bias statements,
under the guidance of TG D11.14.04.
Revisions to ASTM D 2632 are important as they will greatly improve
intra- and interlaboratory test results; the forthcoming revisions
to D 1054 are critical as they will address the most prevalent
and popular pendulum rebound instruments currently in use by the
industry, Warner concluded.
For further technical information, contact Michael Kent Warner, CCSi, Inc., Seattle, Washington (phone: 360/697-6993). Committee
D11 meets Dec. 3-6, Dallas, Texas. For meeting or membership details,
contact Tim Brooke, manager, ASTM Technical Committee Operations (phone: 610/832-9729).
Copyright 2001, ASTM