ASTM F429-10

Standard Test Method for Shock-Attenuation Characteristics of Protective Headgear for Football (Withdrawn 2017)

SIGNIFICANCE AND USE
Maximum acceleration and time duration data obtained by the specified procedures are intended to determine the shock attenuation characteristics of a headgear.
Note 1—These data can be used at a later date to assess the protection afforded to the head when blows are delivered to the helmet.
SCOPE
1.1 This test method covers the determination of the shock-attenuation characteristics of protective headgear for football.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
WITHDRAWN RATIONALE
This test method covers the determination of the shock-attenuation characteristics of protective headgear for football.
Formerly under the jurisdiction of Committee F08 on Sports Equipment, Playing Surfaces, and Facilities, this test method was withdrawn in September 2017. This standard is being withdrawn without replacement due to its lack of use by industry.

General Information

• Status: Withdrawn
• Publication Date: 31-Jul-2010
• Withdrawal Date: 09-Oct-2017
• ICS: 13.340.20 - Head protective equipment
• ICS: 97.220.40 - Outdoor and water sports equipment
• Technical Committee: F08 - Sports Equipment, Playing Surfaces, and Facilities
• Drafting Committee: F08.53 - Headgear and Helmets

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F429 − 10 An American National Standard
Standard Test Method for
Shock-Attenuation Characteristics of Protective Headgear
1
for Football
ThisstandardisissuedunderthefixeddesignationF429;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 basic plane—an anatomical plane that includes the
superior rims of the auditory meatuses (the upper edges of the
1.1 This test method covers the determination of the shock-
2 external openings of the ears) and the notches of the inferior
attenuation characteristics of protective headgear for football.
orbital ridges (the bottom of the eye sockets). See Fig. 1.
1.2 The values stated in SI units are to be regarded as
3.1.2 coronal plane—a vertical plane that is perpendicular
standard. No other units of measurement are included in this
to the median and reference planes and passes through the
standard.
crown of the headform (lateral plane).
1.3 This standard does not purport to address all of the
3.1.3 crown—a point in the median plane which is equal
safety concerns, if any, associated with its use. It is the
chord lengths from the anterior and posterior intersections of
responsibility of the user of this standard to establish appro-
the median and reference planes.
priate safety and health practices and determine the applica-
3.1.4 drop height—the vertical distance between the lowest
bility of regulatory limitations prior to use.
point (impact point) of the elevated helmet and the apex of the
impact surface.
2. Referenced Documents
3
3.1.5 g—dimensionless ratio of the acceleration of the
2.1 ASTM Standards:
headform during impact to the acceleration due to gravity.
F717Specification for Football Helmets
3.1.6 g —the maximum value of g encountered during
2.2 SAE Document: max
impact.
J221JUN 80 Instrumentation for Impact Tests, Require-
4
ments for Channel Class 1000 3.1.7 median plane—averticalplanethatpassesthroughthe
headform from front to back and divides it into right and left
2.3 ISO Standard:
halves (mid-sagittal plane).
ISO/DIS 6220Headforms For Use in the Testing of Protec-
5
tive Helmets
3.1.8 protective headgear—theassembleddeviceandacces-
sories as supplied by the manufacturer primarily intended to
3. Terminology
protect the wearer’s head while participating in football.
3.1 Definitions of Terms Specific to This Standard:
3.1.9 reference plane—a plane that is located at a specified
distance above and parallel to the basic plane.
1
4. Summary of Test Method
This test method is under the jurisdiction ofASTM Committee F08 on Sports
Equipment, Playing Surfaces, and Facilities and is the direct responsibility of
4.1 Aheadgearismountedonaheadformthatisorientedin
Subcommittee F08.53 on Headgear and Helmets.
different positions and is dropped at a specific velocity onto an
Current edition approved Aug. 1, 2010. Published September 2010. Originally
approved in 1975. Last previous edition approved in 2007 as F429–01 (2007).
impactsurface.Alinearaccelerometermountedatthecenterof
DOI: 10.1520/F0429-10.
gravity of the headform monitors the acceleration and the time
2
PerformancerequirementsforfootballhelmetsarefoundinSpecificationF717.
history of impact which are recorded with appropriate instru-
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
mentation.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
5. Significance and Use
the ASTM website.
4
Available from the Society ofAutomotive Engineers, 400 Commonwealth Dr.,
5.1 Maximum acceleration and time duration data obtained
Warrendale, PA 15096.
5
bythespecifiedproceduresareintendedtodeterminetheshock
Available from American National Standards Institute, 11 W. 42nd St., 13th
Floor, New York, NY 10036. attenuation characteristics of a headgear.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F429 − 10
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6. Apparatus
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6.1 Guide Assembly —The headform shall be attached to
the free-fall drop assembly carriage by an adjustable mounting
which will allow impacts to be delivered to any prescribed
point on the helmet (see Fig. 2). The carriage shall be free to
slide on vertical guides. If wires are used they must be placed
under at least 845-N tension (see 12.4 for guide assembly
specifications and allowable weight of drop assembly).
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6.2 Recording Equipment —The recording equipment shall
meet the following criteria:
6.2.1 Acceleration Transducer—The acceleration trans-
ducer is mounted at
...