ASTM E3004-15e1
(Specification)Standard Specification for Preparation and Verification of Clay Blocks Used in Ballistic-Resistance Testing of Torso Body Armor
Standard Specification for Preparation and Verification of Clay Blocks Used in Ballistic-Resistance Testing of Torso Body Armor
ABSTRACT
This specification describes a standardized method for preparation and verification of backing assemblies used in ballistic-resistant torso body armor testing and for reducing variability within and between laboratories. Included in this specification are the equipment used for preparation and verification of clay blocks, namely: backing fixture, backing fixture liner, bridge gauge, conditioning chamber, impactor, striking device, template, test setup, and velocity measurement equipment.
This specification also covers procedures for characterization of clay block verification test setup, clay block preparation, clay block verification procedure prior to ballistic testing, clay block repair, clay block verification between test items, and clay block verification after final shot on clay block.
SCOPE
1.1 The purpose of this specification is to provide a standardized method for preparation and verification of backing assemblies used in ballistic-resistant torso body armor testing and to reduce variability within and between laboratories.
1.2 The backing assembly is a clay block that contains ROMA Plastilina No. 1®2 clay as the backing material. The clay serves as a witness material and provides a measurable indication of test item performance.
1.3 This specification is primarily directed toward test laboratories but may be applicable to body armor manufacturers, researchers, and end users performing ballistic-resistance testing of body armor.
1.4 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to non-SI units that are provided for information only.
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.
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´1
Designation:E3004 −15
Standard Specification for
Preparation and Verification of Clay Blocks Used in
1
Ballistic-Resistance Testing of Torso Body Armor
This standard is issued under the fixed designation E3004; 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
ε NOTE—Editorial corrections made throughout in August 2016.
INTRODUCTION
At the time when work on this specification was undertaken, different ballistic-resistant body armor
test protocols required different impactors for verification of the clay blocks placed behind the test
items, and the lack of detailed guidance about the clay blocks resulted in different practices for
preparation and verification. To improve laboratory-to-laboratory consistency, major stakeholders
sought to harmonize practices related to the preparation and verification of the clay blocks used for
testing of ballistic-resistant body armor.
1. Scope 2. Referenced Documents
3
2.1 ASTM Standards:
1.1 The purpose of this specification is to provide a stan-
E3005 Terminology for Body Armor
dardized method for preparation and verification of backing
4
2.2 NIST Standard:
assemblies used in ballistic-resistant torso body armor testing
NIST Special Publication 330 The International System of
and to reduce variability within and between laboratories.
Units (SI), 2008 Edition, Barry N. Taylor and Ambler
1.2 The backing assembly is a clay block that contains
Thompson, Editors
2
ROMA Plastilina No. 1® clay as the backing material. The
clay serves as a witness material and provides a measurable 3. Terminology
indication of test item performance.
3.1 The terms and definitions of Terminology E3005 apply
for the following terms: backing assembly, backing fixture,
1.3 This specification is primarily directed toward test
backing material and test item.
laboratories but may be applicable to body armor
manufacturers, researchers, and end users performing ballistic-
3.2 Definitions of Terms Specific to This Standard:
resistance testing of body armor.
3.2.1 backing assembly, n—a backing fixture filled with
backing material. For example, a clay block is a type of a
1.4 Units—The values stated in SI units are to be regarded
backing assembly.
as standard. The values given in parentheses are mathematical
3.2.2 backing fixture, n—any apparatus designed to hold or
conversions to non-SI units that are provided for information
contain the backing material(s) for a specific test.
only.
3.2.3 backing material, n—the substance placed behind the
1.5 This standard does not purport to address all of the
test item during testing which is intended to be a witness
safety concerns, if any, associated with its use. It is the
materialandwhichmayprovideameasurableindicationoftest
responsibility of the user of this standard to establish appro-
item performance.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 3.2.4 bridge gauge, n—an assembly used for measuring that
consists of a depth gauge and supports that rest on opposite
sides of the backing fixture.
1
This specification is under the jurisdiction of ASTM Committee E54 on
3
Homeland Security Applications and is the direct responsibility of Subcommittee For referenced ASTM standards, visit the ASTM website, www.astm.org, or
E54.04 on Personal Protective Equipment (PPE). contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Nov. 1, 2015. Published November 2015. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/E3004–15E01. the ASTM website.
2 4
U.S. Government standards require ROMA Plastilina No. 1®, from Sculpture Available from National Institute of Standards and Technology (NIST), 100
House, Inc., as the backing material for ballistic-resistance testing. Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
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E3004−15
3.2.5 clay block, n—a type of backing assembly in which 5. Equipment
the backing material is ROMA Plastilina No. 1® modeling
5.1 The equipment used for preparation and verification of
clay. See Fig. 1.
clay blocks shall be as described below:
3.2.6 clay package, n—the smallest unit of wrapped and 5.1.1 Backing Fixture—The backing fixture shall be a rigid,
labeled clay as received from the supplier. metal frame with a plywood bottom. The inside dimensions of
the metal frame shall be 610 6 2 mm (24.0 6 0.08 in.) by 610
3.2.7
...
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.
´1
Designation: E3004 − 15 E3004 − 15
Standard Specification for
Preparation and Verification of Clay Blocks Used in
1
Ballistic-Resistance Testing of Torso Body Armor
This standard is issued under the fixed designation E3004; 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
ε NOTE—Editorial corrections made throughout in August 2016.
INTRODUCTION
At the time when work on this specification was undertaken, different ballistic-resistant body armor
test protocols required different impactors for verification of the clay blocks placed behind the test
items, and the lack of detailed guidance about the clay blocks resulted in different practices for
preparation and verification. To improve laboratory-to-laboratory consistency, major stakeholders
sought to harmonize practices related to the preparation and verification of the clay blocks used for
testing of ballistic-resistant body armor.
1. Scope
1.1 The purpose of this specification is to provide a standardized method for preparation and verification of backing assemblies
used in ballistic-resistant torso body armor testing and to reduce variability within and between laboratories.
2
1.2 The backing assembly is a clay block that contains ROMA Plastilina No. 1® clay as the backing material. The clay serves
as a witness material and provides a measurable indication of test item performance.
1.3 This specification is primarily directed toward test laboratories but may be applicable to body armor manufacturers,
researchers, and end users performing ballistic-resistance testing of body armor.
1.4 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical
conversions to non-SI units that are provided for information only.
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.
2. Referenced Documents
3
2.1 ASTM Standards:
E3005 Terminology for Body Armor
4
2.2 NIST Standard:
NIST Special Publication 330 The International System of Units (SI), 2008 Edition, Barry N. Taylor and Ambler Thompson,
Editors
3. Terminology
3.1 The terms and definitions of Terminology E3005 apply for the following terms: backing assembly, backing fixture, backing
material and test item.
3.2 Definitions of Terms Specific to This Standard:
1
This specification is under the jurisdiction of ASTM Committee E54 on Homeland Security Applications and is the direct responsibility of Subcommittee E54.04 on
Personal Protective Equipment (PPE).
Current edition approved Nov. 1, 2015. Published November 2015. DOI: 10.1520/E3004–15.10.1520/E3004–15E01.
2
U.S. Government standards require ROMA Plastilina No. 1®, from Sculpture House, Inc., as the backing material for ballistic-resistance testing.
3
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.
4
Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
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E3004 − 15
3.2.1 backing assembly, n—a backing fixture filled with backing material. For example, a clay block is a type of a backing
assembly.
3.2.2 backing fixture, n—any apparatus designed to hold or contain the backing material(s) for a specific test.
3.2.3 backing material, n—the substance placed behind the test item during testing which is intended to be a witness material
and which may provide a measurable indication of test item performance.
3.2.4 bridge gauge, n—an assembly used for measuring that consists of a depth gauge and supports that rest on opposite sides
of the backing fixture.
3.2.5 clay block, n—a type of backing assembly in which the backing material is ROMA Plastilina No. 1® modeling clay. See
Fig. 1.
3.2.6 clay package, n—the smallest unit of wrapped and labeled clay as received from
...
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