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Description of ASTM-E602 1997ASTM E602-91-Reapproved1997Historical Standard: Standard Test Method for Sharp-Notch Tension Testing with Cylindrical SpecimensASTM E602Scope 1.1 This test method covers the determination of a comparative measure of the resistance of thick-section materials to fracture under plane-strain conditions originating from a very sharp stress-concentrator or crack (Note 1). The quantity determined is the sharp-notch strength of a specimen of particular dimensions, and this value depends upon these dimensions as well as the characteristics of the material. The sharp-notch strength-to-yield strength ratio is also determined. Note 1-Direct measurements of the plane-strain fracture toughness may be made in accordance with Test Method E399. Comparative measures of resistance to fracture for sheet and thin plate may be obtained in accordance with Test Method E338.1.2 This test method is restricted to sharp machine-notched specimens (notch tip radii less than or equal to 0.018 mm (0.0007 in.)), and applies only to those materials (for example, aluminum and magnesium alloys) in which such sharp notches can be reproducibly machined. 1.3 This test method is restricted to cylindrical specimens of two diameters as shown in Fig. 1. The 27.0-mm (1 1/16-in.) diameter specimen extends the range of application of this test method to higher toughness levels than could be accommodated by the 12.7-mm (0.5-in.) diameter specimen. 1.4 This test method is restricted to materials equal to or greater than 12.7 mm (0.5 in.) in thickness. Since the notch strength depends on the specimen diameter and, within certain limits, on the length, comparison of various material conditions must be based on tests of specimens having the same nominal diameter and a test section length sufficient to prevent significant interaction between the stress field of the specimen heads and that of the sharp notch (see Fig. 1). 1.5 The sharp-notch strength may depend strongly upon temperature within a certain range depending upon the characteristics of the material. This test method is suitable for tests at any appropriate temperature. However, comparisons of various material conditions must be based on tests conducted at the same temperature. 1.6 The values stated in SI (metric) units are to be regarded as the standard. Note 2-Further information on background and need for this type of test is given in the Fourth Report of ASTM Committee E-24 (1) on Fracture Testing, as well as other committee documents (2, 3, 4).1.7 This standard does not purport to address all of the safety problems, 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. Keywords Aluminum alloys; Fracture testing; Magnesium alloys; Strength-sharp-notch; sharp-notch tension testing, on high-strength cylindrical specimens,; method ICS Code ICS Number Code 77.040.10 (Mechanical testing of metals) DOI: 10.1520/E0602-91R97 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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