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ASTM D8510/D8510M-23

(Test Method)

Standard Test Method for Local Buckling and Crippling under Axial Compressive Loading

Standard Test Method for Local Buckling and Crippling under Axial Compressive Loading

SIGNIFICANCE AND USE
5.1 This test method is designed to produce composite stiffener cross-section local buckling and crippling data for research and development, and for structural design and analysis. The standard generic configurations for this procedure provide data for two types of cross-section segments: one-edge-free and no-edge-free. This type of data is used in classical stiffener analysis methods. Compressive loading of composite column type specimens may exhibit one of four modes: (1) a compression material strength failure, (2) an overall column flexural, torsional, and or flexural-torsional instability, (3) a local instability followed by a continued post-buckled force carrying capability which eventually results in a material strength failure, or (4) a combination of local and overall instability followed by post-buckling failure. The first two modes are outside the scope of this test method. The latter two modes are categorized as crippling failure and is the purpose of this test method.  
5.1.1 The desired failure mode is characterized by an initial linear elastic structural deformation. Continued loading eventually renders one of the cross-sectional segments unstable. Additional loading beyond this point of initial buckling exhibits a pattern of local lateral deflections or buckles. These deflections will grow, and possibly change modes, until catastrophic column failure occurs. This failure is considered the ultimate crippling stress for the buckled segments.  
5.2 General factors that influence the mechanical response of composite laminates and should therefore be reported include the following: material, methods of material preparation and lay-up, specimen stacking sequence, specimen preparation, specimen conditioning, environment of testing, specimen alignment and gripping, speed of testing, time held at test temperature, void content, and volume percent reinforcement.
SCOPE
1.1 This test method covers the local buckling and crippling stresses for one-edge-free and no-edge-free cross section configurations using solid laminate composite material construction. Design of test specimens is covered in Guide D8511/D8511M. A number of test parameters may be varied within the scope of the standard, provided that the parameters are fully documented in the test report. The composite material forms are limited to continuous-fiber or discontinuous-fiber (tape, fabric, braids or hybrids of these forms) reinforced composites.  
1.2 This test method requires careful specimen design, instrumentation, data measurement and data analysis. The use of this test method requires close coordination between the test requestor and the test lab personnel. Test requestors need to be familiar with Guide D8511/D8511M and CMH-17 Volume 3 Chapter 92 (1).  
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
Current Stage
Ref Project

Relations

Refers
ASTM D5229/D5229M-20 - Standard Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials
Effective Date
01-Mar-2020
Refers
ASTM E251-20a - Standard Test Methods for Performance Characteristics of Metallic Bonded Resistance Strain Gages
Effective Date
01-Jun-2020
Refers
ASTM E251-20 - Standard Test Methods for Performance Characteristics of Metallic Bonded Resistance Strain Gages
Effective Date
01-May-2020
Refers
ASTM E1237-20 - Standard Guide for Installing Bonded Resistance Strain Gages
Effective Date
15-Aug-2020

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ASTM D8510/D8510M-23 - Standard Test Method for Local Buckling and Crippling under Axial Compressive LoadingASTM D8510/D8510M-23 - Standard Test Method for Local Buckling and Crippling under Axial Compressive Loading
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ASTM D8510/D8510M-23 - Standard Test Method for Local Buckling and Crippling under Axial Compressive Loading
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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: D8510/D8510M − 23
Standard Test Method for
Local Buckling and Crippling under Axial Compressive
1
Loading
This standard is issued under the fixed designation D8510/D8510M; 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 test method covers the local buckling and crippling
stresses for one-edge-free and no-edge-free cross section
2. Referenced Documents
configurations using solid laminate composite material con-
3
2.1 ASTM Standards:
struction. Design of test specimens is covered in Guide
D792 Test Methods for Density and Specific Gravity (Rela-
D8511/D8511M. A number of test parameters may be varied
tive Density) of Plastics by Displacement
within the scope of the standard, provided that the parameters
D883 Terminology Relating to Plastics
are fully documented in the test report. The composite material
D2584 Test Method for Ignition Loss of Cured Reinforced
forms are limited to continuous-fiber or discontinuous-fiber
Resins
(tape, fabric, braids or hybrids of these forms) reinforced
D2734 Test Methods for Void Content of Reinforced Plastics
composites.
D3171 Test Methods for Constituent Content of Composite
1.2 This test method requires careful specimen design,
Materials
instrumentation, data measurement and data analysis. The use
D3878 Terminology for Composite Materials
of this test method requires close coordination between the test
D5229/D5229M Test Method for Moisture Absorption Prop-
requestor and the test lab personnel. Test requestors need to be
erties and Equilibrium Conditioning of Polymer Matrix
familiar with Guide D8511/D8511M and CMH-17 Volume 3
Composite Materials
2
Chapter 9 (1).
D5687/D5687M Guide for Preparation of Flat Composite
1.3 Units—The values stated in either SI units or inch- Panels with Processing Guidelines for Specimen Prepara-
pound units are to be regarded separately as standard. The tion
values stated in each system are not necessarily exact equiva- D7137/D7137M Test Method for Compressive Residual
lents; therefore, to ensure conformance with the standard, each
Strength Properties of Damaged Polymer Matrix Compos-
system shall be used independently of the other, and values ite Plates
from the two systems shall not be combined.
D8511/D8511M
1.3.1 Within the text the inch-pound units are shown in E4 Practices for Force Calibration and Verification of Test-
brackets.
ing Machines
E6 Terminology Relating to Methods of Mechanical Testing
1.4 This standard does not purport to address all of the
E83 Practice for Verification and Classification of Exten-
safety concerns, if any, associated with its use. It is the
someter Systems
responsibility of the user of this standard to establish appro-
E177 Practice for Use of the Terms Precision and Bias in
priate safety, health, and environmental practices and deter-
ASTM Test Methods
mine the applicability of regulatory limitations prior to use.
E251 Test Methods for Performance Characteristics of Me-
1.5 This international standard was developed in accor-
tallic Bonded Resistance Strain Gages
dance with internationally recognized principles on standard-
E456 Terminology Relating to Quality and Statistics
ization established in the Decision on Principles for the
E1237 Guide for Installing Bonded Resistance Strain Gages
Development of International Standards, Guides and Recom-
3. Terminology
1
3.1 Definitions:
This test method is under the jurisdiction of ASTM Committee D30 on
Composite 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/D8510_D8510M-23. contact ASTM Customer Service at service@astm.org. 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 Summary page on
this standard. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D8510/D8510M − 23
cc
3.1.1 Terminology D3878 defines terms relating to high- 3.3.4 F —crippling stress, MPa [psi].
modulus fibers and their composites. Terminology D883 de-
3.3.5 L1—specim
...

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Standard Guide for Monitoring the Neutron Exposure of LWR Reactor Pressure Vessels

SIGNIFICANCE AND USE
4.1 Regulatory Requirements—The USA Code of Federal Regulations (10CFR Part 50, Appendix H) requires the implementation of a reactor vessel materials surveillance program for all operating LWRs. Other countries have similar regulations. The purpose of the program is to (1) monitor changes in the fracture toughness properties of ferritic materials in the reactor vessel beltline6 resulting from exposure to neutron irradiation and the thermal environment, and (2) make use of the data obtained from surveillance programs to determine the conditions under which the vessel can be operated with adequate margins of safety throughout its service life. Practice E185, derived mechanical property data, and (r, θ, z) physics-dosimetry data (derived from the calculations and reactor cavity and surveillance capsule measurements (1) using physics-dosimetry standards) can be used together with information in Guide E900 and Refs. 4, 11-18 to provide a relation between property degradation and neutron exposure, commonly called a “trend curve.” To obtain this trend curve at all points in the pressure vessel wall requires that the selected trend curve be used together with the appropriate (r, θ, z) neutron field information derived by use of this guide to accomplish the necessary interpolations and extrapolations in space and time.  
4.2 Neutron Field Characterization—The tasks required to satisfy the second part of the objective of 4.1 are complex and are summarized in Practice E853. In doing this, it is necessary to describe the neutron field at selected (r, θ, z) points within the pressure vessel wall. The description can be either time dependent or time averaged over the reactor service period of interest. This description can best be obtained by combining neutron transport calculations with plant measurements such as reactor cavity (ex-vessel) and surveillance capsule or RPV cladding (in-vessel) measurements, benchmark irradiations of dosimeter sensor materials, and knowledge of th...
SCOPE
1.1 This guide establishes the means and frequency of monitoring the neutron exposure of the LWR reactor pressure vessel throughout its operating life.  
1.2 The physics-dosimetry relationships determined from this guide may be used to estimate reactor pressure vessel damage through the application of Practice E693 and Guide E900, using fast neutron fluence (E > 1.0 MeV and E > 0.1 MeV), displacements per atom (dpa), or damage-function-correlated exposure parameters as independent exposure variables. Supporting the application of these standards are the E853, E944, E1005, and E1018 standards, identified in 2.1.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

  • Guide
    12 pages
    English language
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  • Guide
    12 pages
    English language
    sale 15% off