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Description of ASTM-D5045 2022ASTM D5045-14-Reapproved2022Active Standard: Standard Test Methods for Plane-Strain Fracture Toughness and Strain Energy Release Rate of Plastic MaterialsASTM D5045Scope 1.1 These test methods are designed to characterize the toughness of plastics in terms of the critical-stress-intensity factor, KIc, and the energy per unit area of crack surface or critical strain energy release rate, GIc, at fracture initiation. 1.2 Two testing geometries are covered by these test methods, single-edge-notch bending (SENB) and compact tension (CT). 1.3 The scheme used assumes linear elastic behavior of the cracked specimen, so certain restrictions on linearity of the load-displacement diagram are imposed. 1.4 A state-of-plane strain at the crack tip is required. Specimen thickness must be sufficient to ensure this stress state. 1.5 The crack must be sufficiently sharp to ensure that a minimum value of toughness is obtained. 1.6 The significance of these test methods and many conditions of testing are identical to those of Test Method E399, and, therefore, in most cases, appear here with many similarities to the metals standard. However, certain conditions and specifications not covered in Test Method E399, but important for plastics, are included. 1.7 This protocol covers the determination of GIc as well, which is of particular importance for plastics. 1.8 These test methods give general information concerning the requirements for KIc and GIc testing. As with Test Method E399, two annexes are provided which give the specific requirements for testing of the SENB and CT geometries. 1.9 Test data obtained by these test methods are relevant and appropriate for use in engineering design. 1.10 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. Note 1: This standard and ISO 13586 address the same subject matter, but differ in technical content. 1.11 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. Keywords critical-strain energy release rate; energy-to-break; fracture toughness; plane-strain fracture toughness; ICS Code ICS Number Code 83.080.01 (Plastics in general) DOI: 10.1520/D5045-14R22 This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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