ASTM D8511/D8511M-23

Standard Guide for Design and Analysis of Local Buckling and Crippling Test Specimens

SCOPE
1.1 This guide covers designing local buckling and crippling test specimens to obtain empirical strength data for one-edge-free and no-edge-free cross section configurations using solid laminate composite material construction. This guide also discusses data analysis procedures for these test specimens. Test procedures for local buckling and crippling specimens are covered in Test Method D8510/D8510M. This guide is intended to be used by persons requesting these test types.  
1.2 Local buckling and crippling tests require careful specimen design, instrumentation, data measurement and data analysis. Test requestors designing these specimen need to be familiar with Test Method D8510/D8510M, CMH-17 Volume 3 Chapter 9 (1)2, and the stress analysis methods that will use the resulting local buckling and crippling design data.  
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.3.1 Within the text the inch-pound units are shown in brackets.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Aug-2023
• Technical Committee: D30 - Composite Materials
• Drafting Committee: D30.05 - Structural Test Methods

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D8511/D8511M − 23
Standard Guide for
Design and Analysis of Local Buckling and Crippling Test
1
Specimens
This standard is issued under the fixed designation D8511/D8511M; 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 mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This guide covers designing local buckling and crip-
pling test specimens to obtain empirical strength data for
2. Referenced Documents
one-edge-free and no-edge-free cross section configurations
3
2.1 ASTM Standards:
using solid laminate composite material construction. This
D883 Terminology Relating to Plastics
guide also discusses data analysis procedures for these test
D3878 Terminology for Composite Materials
specimens. Test procedures for local buckling and crippling
D8510/D8510M
specimens are covered in Test Method D8510/D8510M. This
guide is intended to be used by persons requesting these test
3. Terminology
types.
3.1 Definitions:
1.2 Local buckling and crippling tests require careful speci- 3.1.1 Terminology D3878 defines terms relating to high-
men design, instrumentation, data measurement and data
modulus fibers and their composites. Terminology D883 de-
analysis. Test requestors designing these specimen need to be fines terms relating to plastics. In the event of a conflict
familiar with Test Method D8510/D8510M, CMH-17 Volume
between terms, Terminology D3878 shall have precedence.
2
3 Chapter 9 (1) , and the stress analysis methods that will use
NOTE 1—If the term represents a physical quantity, its analytical
the resulting local buckling and crippling design data.
dimensions are stated immediately following the term (or letter symbol) in
fundamental dimension form, using the following ASTM standard sym-
1.3 Units—The values stated in either SI units or inch-
bology for fundamental dimensions, shown within square brackets: [M]
pound units are to be regarded separately as standard. The
for mass, [L] for length, [T] for time, [θ] for thermodynamic temperature,
values stated in each system are not necessarily exact equiva-
and [nd] for non-dimensional quantities. Use of these symbols is restricted
lents; therefore, to ensure conformance with the standard, each to analytical dimensions when used with square brackets, as the symbols
may have other definitions when used without the brackets.
system shall be used independently of the other, and values
from the two systems shall not be combined.
3.2 Definitions of Terms Specific to This Standard:
cc -2
1.3.1 Within the text the inch-pound units are shown in 3.2.1 crippling force, P [MLT ], n—the applied compres-
brackets. sive force at or above the local buckling force at which
specimen failure occurs.
1.4 This standard does not purport to address all of the
cc -1 -2
3.2.2 crippling stress, F [ML T ], n—the average stress
safety concerns, if any, associated with its use. It is the
in the test specimen cross-section at failure.
responsibility of the user of this standard to establish appro-
lcr -2
priate safety, health, and environmental practices and deter-
3.2.3 local buckling force, P [MLT ], n—the applied
mine the applicability of regulatory limitations prior to use.
compressive force at which buckling initiates.
lcr -1 -2
1.5 This international standard was developed in accor-
3.2.4 local buckling stress, F [ML T ], n—the average
dance with internationally recognized principles on standard-
stress in the test specimen cross-section at which buckling of a
ization established in the Decision on Principles for the
compression element within the cross-section initiates.
Development of International Standards, Guides and Recom-
3.2.5 slenderness ratio, L’/ρ [nd], n—the ratio of the speci-
men length adjusted for end boundary condition effects divided
by the minimum radius of gyration of the specimen cross-
1
This guide is under the jurisdiction of ASTM Committee D30 on Composite
section.
Materials and is the direct responsibility of Subcommittee D30.05 on Structural Test
Methods.
3
Current edition approved Sept. 1, 2023. Published September 2023. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/D8511_D8511M-23. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
2
The boldface numbers in parentheses refer to a list of references at the end of Standards volume information, refer to the standard’s Document S
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