ASTM F2219-14
(Test Method)Standard Test Methods for Measuring High-Speed Bat Performance
Standard Test Methods for Measuring High-Speed Bat Performance
SIGNIFICANCE AND USE
4.1 These test methods offer a laboratory means to quantitatively compare the performance of baseball and softball bats.
4.2 Use of these test methods can provide quantitative metrics of bat performance.
SCOPE
1.1 A method for determining bat performance by measuring the bat-ball coefficient of restitution (BBCOR), deriving the ball exit speed ratio (BESR), and calculating a batted-ball speed (BBS). It is applicable to baseball and softball bats of any construction or material. The test methods provide quantitative measures of bat dynamic performance that may be used for comparison purposes.
1.2 The BBCOR, BESR, and BBS are each calculated from measurements taken in the laboratory on test equipment meeting the requirements defined in this standard.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 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 to determine the applicability of regulatory limitations prior to use.
General Information
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F2219 − 14 An American National Standard
Standard Test Methods for
1
Measuring High-Speed Bat Performance
This standard is issued under the fixed designation F2219; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 A method for determining bat performance by measur- 3.1 Definitions of Terms Specific to This Standard:
ing the bat-ball coefficient of restitution (BBCOR), deriving 3.1.1 balance point (BP), n—distance to the center of mass
the ball exit speed ratio (BESR), and calculating a batted-ball from the knob end of the bat.
speed (BBS). It is applicable to baseball and softball bats of
3.1.2 ball exit speed ratio (BESR), n—ratio of ball exit
any construction or material. The test methods provide quan-
1
speed to the ball inbound speed plus ⁄2 .
titative measures of bat dynamic performance that may be used
3.1.3 bat-ball coeffıcient of restitution (BBCOR), n—COR
for comparison purposes.
of a specific ball colliding with a bat.
1.2 The BBCOR, BESR, and BBS are each calculated from
3.1.4 batted ball speed (BBS), n—the speed that a ball
measurements taken in the laboratory on test equipment
would be hit off a bat in play based on given pitch and bat
meeting the requirements defined in this standard.
speeds.
1.3 The values stated in inch-pound units are to be regarded
3.1.5 coeffıcient of restitution (COR), n—measure of impact
as standard. The values given in parentheses are mathematical
efficiency calculated as the relative speed of the objects after
conversions to SI units that are provided for information only
impact divided by the relative speed of the objects before
and are not considered standard.
impact.
1.4 This standard does not purport to address all of the
3.1.6 cylindrical coeffıcient of restitution (CCOR), n—the
safety concerns, if any, associated with its use. It is the
ratio of the rebound to incoming speed of a ball impacting a
responsibility of the user of this standard to establish appro-
solid rigid cylinder.
priate safety and health practices and to determine the
3.1.7 dynamic stiffness (DS), n—a normalized measure of
applicability of regulatory limitations prior to use.
the ball impact force having units of stiffness (lb/in. or kN/m).
It is obtained by dividing the square of the peak force between
2. Referenced Documents
the ball and impact surface by the ball mass and the square of
2
2.1 ASTM Standards:
the incoming ball speed.
F1887 Test Method for Measuring the Coefficient of Resti-
3.1.8 moment of inertia (MOI), n—measure of mass distri-
tution (COR) of Baseballs and Softballs
bution relative to an axis of rotation. It is the product of the
F1888 Test Method for Compression-Displacement of Base-
mass multiplied by the square of the distance to the mass,
balls and Softballs
summed over the entire bat.
F2398 Test Method for Measuring Moment of Inertia and
Center of Percussion of a Baseball or Softball Bat
3.1.9 test sponsor, n—group,associationorindividualspeci-
F2845 Test Method for Measuring the Dynamic Stiffness fying test requirements including ball specifications, perfor-
(DS)andCylindricalCoefficientofRestitution(CCOR)of
mance measure, and test speed.
Baseballs and Softballs
4. Significance and Use
4.1 These test methods offer a laboratory means to quanti-
1
These test methods are under the jurisdiction of ASTM Committee F08 on
tatively compare the performance of baseball and softball bats.
Sports Equipment, Playing Surfaces, and Facilities and are the direct responsibility
of Subcommittee F08.26 on Baseball and Softball Equipment. 4.2 Use of these test methods can provide quantitative
Current edition approved May 1, 2014. Published June 2014. Originally
metrics of bat performance.
approved in 2002. Last previous edition approved in 2013 as F2219 – 13. DOI:
10.1520/F2219-14.
2
5. Apparatus and Equipment
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1 Test Balls—Baseballs or softballs as determined by the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. test sponsor.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F2219 − 14
5.1.1 Ball specification values are to be recorded and traced relative to the inbound ball path. The horizontal rebound angle
to individual balls. gate shall be mounted at approximately 25° relative to the
inbound ball path (to provide room for t
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F2219 − 13 F2219 − 14 An American National Standard
Standard Test Methods for
1
Measuring High-Speed Bat Performance
This standard is issued under the fixed designation F2219; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 A method for determining bat performance by measuring the bat-ball coefficient of restitution (BBCOR), deriving the ball
exit speed ratio (BESR), and calculating a batted-ball speed (BBS). It is applicable to baseball and softball bats of any construction
or material. The test methods provide quantitative measures of bat dynamic performance that may be used for comparison
purposes.
1.2 The BBCOR, BESR, and BBS are each calculated from measurements taken in the laboratory on test equipment meeting
the requirements defined in this standard.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.4 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 to determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
F1887 Test Method for Measuring the Coefficient of Restitution (COR) of Baseballs and Softballs
F1888 Test Method for Compression-Displacement of Baseballs and Softballs
F2398 Test Method for Measuring Moment of Inertia and Center of Percussion of a Baseball or Softball Bat
F2845 Test Method for Measuring the Dynamic Stiffness (DS) and Cylindrical Coefficient of Restitution (CCOR) of Baseballs
and Softballs
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 balance point (BP), n—distance to the center of mass from the knob end of the bat.
1
3.1.2 ball exit speed ratio (BESR), n—ratio of ball exit speed to the ball inbound speed plus ⁄2 .
3.1.3 bat-ball coeffıcient of restitution (BBCOR), n—COR of a specific ball colliding with a bat.
3.1.4 batted ball speed (BBS), n—the speed that a ball would be hit off a bat in play based on given pitch and bat speeds.
3.1.5 coeffıcient of restitution (COR), n—measure of impact efficiency calculated as the relative speed of the objects after impact
divided by the relative speed of the objects before impact.
3.1.6 cylindrical coeffıcient of restitution (CCOR), n—the ratio of the rebound to incoming speed of a ball impacting a solid rigid
cylinder.
3.1.7 dynamic stiffness (DS), n—a normalized measure of the ball impact force having units of stiffness (lb/in. or kN/m). It is
obtained by dividing the square of the peak force between the ball and impact surface by the ball mass and the square of the
incoming ball speed.
1
These test methods are under the jurisdiction of ASTM Committee F08 on Sports Equipment, Playing Surfaces, and Facilities and are the direct responsibility of
Subcommittee F08.26 on Baseball and Softball Equipment.
Current edition approved June 1, 2013May 1, 2014. Published July 2013June 2014. Originally approved in 2002. Last previous edition approved in 20112013 as
F2219 – 11.F2219 – 13. DOI: 10.1520/F2219-13.10.1520/F2219-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F2219 − 14
3.1.8 moment of inertia (MOI), n—measure of mass distribution relative to an axis of rotation. It is the product of the mass
multiplied by the square of the distance to the mass, summed over the entire bat.
3.1.9 test sponsor, n—group, association or individual specifying test requirements including ball specifications, performance
measure, and test speed.
4. Significance and Use
4.1 These test methods offer a laboratory means to quantitatively compare the performance of baseball and softball bats.
4.2 Use of these test methods can provide quantitative metrics of bat performance.
5. Appara
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.