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ASTM D 7078/D7078M : 2012

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 Shear Properties of Composite Materials by V-Notched Rail Shear Method
Available format(s)

Hardcopy , PDF

Superseded date

14-10-2019

Language(s)

English

Published date

15-07-2012

This test method covers the determination of the shear properties of high-modulus fiber-reinforced composite materials by clamping the ends of a V-notched specimen between two pairs of loading rails.

1.1This test method covers the determination of the shear properties of high-modulus fiber-reinforced composite materials by clamping the ends of a V-notched specimen between two pairs of loading rails. When loaded in tension, the rails introduce shear forces into the specimen through the specimen faces. In comparison, the specimen of Test Method D5379/D5379M is loaded through its top and bottom edges. Face loading allows higher shear forces to be applied to the specimen, if required. Additionally, the present test method utilizes a specimen with a larger gage section than the V-notched specimen of Test Method D5379/D5379M. In both test methods, the use of a V-notched specimen increases the gage section shear stresses in relation to the shear stresses in the vicinity of the grips, thus localizing the failure within the gage section while causing the shear stress distribution to be more uniform than in a specimen without notches. In comparison, Test Method D4255/D4255M utilizes an unnotched specimen clamped between two pairs of loading rails that are loaded in tension. Also in contrast to Test Method D4255/D4255M, the present test method provides specimen gripping without the need for holes in the specimen.

The composite materials are limited to continuous-fiber or discontinuous-fiber-reinforced composites in the following material forms:

1.1.1Laminates composed only of unidirectional fibrous laminae, with the fiber direction oriented either parallel or perpendicular to the fixture rails.

1.1.2Laminates of balanced and symmetric construction, with the 0° direction oriented either parallel or perpendicular to the fixture rails.

1.1.3Laminates composed of woven, braided, or knitted fabric filamentary laminae.

1.1.4Short-fiber-reinforced composites with a majority of the fibers being randomly distributed.

1.2The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text the inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

1.3This 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
15
ProductNote
THIS STANDARD ALSO REFERS TO ANSI Y 15.4M 1982, ANSI/ASME B 46.1 - 1985
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM D 3171 : 1999 Standard Test Methods for Constituent Content of Composite Materials
ASTM D 6856 : 2003 Standard Guide for Testing Fabric-Reinforced "Textile" Composite Materials
ASTM D 2584 : 2002 Standard Test Method for Ignition Loss of Cured Reinforced Resins
ASTM D 3878 : 2002 : REV A Standard Terminology for Composite Materials
ASTM E 1237 : 1993 : R1998 Standard Guide for Installing Bonded Resistance Strain Gages
ASTM D 3878 : 2015 Standard Terminology for Composite Materials
ASTM D 2584 : 2008 Standard Test Method for Ignition Loss of Cured Reinforced Resins
ASTM E 1434 : 2000 : R2013 Standard Guide for Recording Mechanical Test Data of Fiber-Reinforced Composite Materials in Databases (Withdrawn 2015)
ASTM D 3878 : 2019 Standard Terminology for Composite Materials
ASTM D 3878 : 2000 Standard Terminology Composite Materials
ASTM D 2584 : 1994 Standard Test Method for Ignition Loss of Cured Reinforced Resins
ASTM D 3171 : 2011 Standard Test Methods for Constituent Content of Composite Materials
ASTM D 2734 : 2016 Standard Test Methods for Void Content of Reinforced Plastics
ASTM D 3878 : 2003 : REV A Standard Terminology for Composite Materials
ASTM D 2584 : 2011 Standard Test Method for Ignition Loss of Cured Reinforced Resins
ASTM E 1237 : 1993 : R2009 Standard Guide for Installing Bonded Resistance Strain Gages
ASTM D 3878 : 2016 Standard Terminology for Composite Materials
ASTM E 1309 : 2000 Standard Guide for Identification of Fiber-Reinforced Polymer-Matrix Composite Materials in Databases
ASTM D 3878 : 1998 Standard Terminology Composite Materials
ASTM D 3878 : 2018 Standard Terminology for Composite Materials
ASTM E 1434 : 2000 Standard Guide for Recording Mechanical Test Data of Fiber-Reinforced Composite Materials in Databases
ASTM D 3171 : 2009 Standard Test Methods for Constituent Content of Composite Materials
ASTM D 3878 : 2002 Standard Terminology for Composite Materials
ASTM E 1237 : 1993 : R2003 Standard Guide for Installing Bonded Resistance Strain Gages
ASTM D 2584 : 1968 Standard Method Of Test For Ignition Loss Of Cured Reinforced Resins
ASTM D 3878 : 2004 Standard Terminology for Composite Materials
ASTM E 1237 : 1993 : R2014 Standard Guide for Installing Bonded Resistance Strain Gages
ASTM D 2734 : 1994 Standard Test Methods for Void Content of Reinforced Plastics
ASTM D 3878 : 2007 : R2013 Standard Terminology for Composite Materials
ASTM D 6856 : 2003 : R2008 Standard Guide for Testing Fabric-Reinforced "Textile" Composite Materials
ASTM E 1309 : 2000 : R2011 Standard Guide for Identification of Fiber-Reinforced Polymer-Matrix Composite Materials in Databases (Withdrawn 2015)
ASTM D 2584 : 2018 Standard Test Method for Ignition Loss of Cured Reinforced Resins
ASTM D 3878 : 2003 Standard Terminology for Composite Materials
ASTM D 3878 : 2007 Standard Terminology for Composite Materials
ASTM D 2734 : 2009 Standard Test Methods for Void Content of Reinforced Plastics
ASTM D 3171 : 1999 : R2004 Standard Test Methods for Constituent Content of Composite Materials
ASTM E 1309 : 2000 : R2005 Standard Guide for Identification of Fiber-Reinforced Polymer-Matrix Composite Materials in Databases
ASTM D 3171 : 2015 Standard Test Methods for Constituent Content of Composite Materials
ASTM D 3878 : 2004 : REV A Standard Terminology for Composite Materials
ASTM D 3171 : 2006 Standard Test Methods for Constituent Content of Composite Materials
ASTM E 1434 : 2000 : R2006 Standard Guide for Recording Mechanical Test Data of Fiber-Reinforced Composite Materials in Databases
ASTM D 3878 : 2001 Standard Terminology Composite Materials

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