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ASTM D 7248/D7248M : 2012

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Method for Bearing/Bypass Interaction Response of Polymer Matrix Composite Laminates Using 2-Fastener Specimens
Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

01-04-2012

CONTAINED IN VOL. 15.03, 2017 Describes the uniaxial bearing/bypass interaction response of multi-directional polymer matrix composite laminates reinforced high-modulus fibers by either double-shear tensile loading (Procedures A and C) or single-shear tensile or compressive loading (Procedure B) of a two-fastener specimen.

1.1 This test method determines the uniaxial bearing/bypass interaction response of multi-directional polymer matrix composite laminates reinforced by high-modulus fibers by either double-shear tensile loading (Procedures A and C) or single-shear tensile or compressive loading (Procedure B) of a two-fastener specimen. The scope of this test method is limited to net section (bypass) failure modes. Standard specimen configurations using fixed values of test parameters are described for each procedure. 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 or fabric, or both) reinforced composites for which the laminate is balanced and symmetric with respect to the test direction. The range of acceptable test laminates and thicknesses are described in 8.2.1.

1.2 This test method is consistent with the recommendations of MIL-HDBK-17, which describes the desirable attributes of a bearing/bypass interaction response test method.

1.3 The two-fastener test configurations described in this test method are similar to those in Test Method D5961/D5961M as well as those used by industry to investigate the bearing portion of the bearing/bypass interaction response for bolted joints, where the specimen may produce either a bearing failure mode or a bypass failure mode. Should the test specimen fail in a bearing failure mode rather than the desired bypass mode, then the test should be considered to be a bearing dominated bearing/bypass test, and the data reduction and reporting procedures of Test Method D5961/D5961M should be used instead of those given in this standard.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.4.1 Within the text the inch-pound units are shown in brackets.

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.

Committee
D 30
DocumentType
Test Method
Pages
32
ProductNote
Reconfirmed 2012
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM D 5961/D5961M : 2017 : REDLINE Standard Test Method for Bearing Response of Polymer Matrix Composite Laminates
ASTM E 122 : 2017 : REDLINE Standard Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process
ASTM E 177 : 2014 : REDLINE Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
ASTM D 5229/D5229M : 2014-06 TEST METHOD FOR MOISTURE ABSORPTION PROPERTIES AND EQUILIBRIUM CONDITIONING OF POLYMER MATRIX COMPOSITE MATERIALS
ASTM D 792 : 2013 : REDLINE Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
ASTM E 83 : 2016 : REDLINE Standard Practice for Verification and Classification of Extensometer Systems
ASTM D 2734 : 2016 : REDLINE Standard Test Methods for Void Content of Reinforced Plastics
ASTM D 3171 : 2015 : REDLINE Standard Test Methods for Constituent Content of Composite Materials
ASTM D 6742/D6742M : 2017 : REDLINE Standard Practice for Filled-Hole Tension and Compression Testing of Polymer Matrix Composite Laminates
ASTM D 6484/D6484M : 2014 : REDLINE Standard Test Method for Open-Hole Compressive Strength of Polymer Matrix Composite Laminates

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