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Standard Test Method for Shear Properties of Composite Materials by the V-Notched Beam Method (Includes all amendments and changes 3/24/2021).
Přeložit název
NORMA vydána dne 15.10.2019
Označení normy: ASTM D5379/D5379M-19e1
Datum vydání normy: 15.10.2019
Kód zboží: NS-1020821
Počet stran: 14
Přibližná hmotnost: 42 g (0.09 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
composite materials, in-plane shear, interlaminar shear, shear modulus, shear properties, shear strength, shear testing ,, ICS Number Code 83.140.20 (Laminated sheets)
Adjunct to D5379/D5379M Standard Test Method for Shear Properties of Composite Materials by the V-Notched Beam Method
Vybrané provedení:Significance and Use | ||||||||||||||||||||||||||||||||||
5.1 This test method is designed to produce shear property data for material specifications, research and development, quality assurance, and structural design and analysis. Either in-plane or interlaminar shear properties may be evaluated, depending upon the orientation of the material coordinate system relative to the loading axis. Factors that influence the shear response 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 at temperature, void content, and volume percent reinforcement. 5.2 In anisotropic materials, properties may be obtained in any of the six possible shear planes by orienting the testing plane of the specimen with the desired material plane (5.2.1 Shear stress/strain response, 5.2.2 Ultimate strength, 5.2.3 Ultimate strain, and 5.2.4 Shear chord modulus of elasticity. |
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1. Scope | ||||||||||||||||||||||||||||||||||
1.1 This test method covers the shear properties of composite materials reinforced by high-modulus fibers. The composite materials are limited to continuous-fiber or discontinuous-fiber-reinforced composites in the following material forms: 1.1.1 Laminates composed only of unidirectional fibrous laminae, with the fiber direction oriented either parallel or perpendicular to the loading axis. 1.1.2 Laminates composed only of woven fabric filamentary laminae with the warp direction oriented either parallel or perpendicular to the loading axis. 1.1.3 Laminates composed only of unidirectional fibrous laminae, containing equal numbers of plies oriented at 0 and 90° in a balanced and symmetric stacking sequence, with the 0° direction oriented either parallel or perpendicular to the loading axis. 1.1.4 Short-fiber-reinforced composites with a majority of the fibers being randomly distributed. Note 1: This shear test concept was originally developed
without reference to fiber direction for use on isotropic materials
such as metals or ceramics.
1.2 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. 1.2.1 Within the text, the inch-pound units are shown in brackets. 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. |
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2. Referenced Documents | ||||||||||||||||||||||||||||||||||
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