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Description of ASTM-E837 2025ASTM E837-25Redline Standard: Standard Test Method for Determining Residual Stresses by the Hole-Drilling Strain-Gage MethodASTM E837Scope 1.1 Residual Stress Determination: 1.1.1 This test method specifies a hole-drilling procedure for determining in-plane residual stresses near the surface of an isotropic linearly elastic material. It applies to residual stress determinations where the stresses do not vary significantly across the diameter of the drilled hole. The measured stresses are the in-plane residual stresses that are present within the depth of the drilled hole. Stress sensitivity rapidly decreases with depth from the measured surface, and deep interior stresses cannot be evaluated. The measured residual stresses are described as “uniform” if they remain approximately constant within the hole depth, or “non-uniform” if they vary significantly. 1.1.2 “Blind” holes are used, where the depth of the drilled hole and therefore the depth of the residual stress evaluation is less than the specimen thickness. 1.2 Stress Measurement Range: 1.2.1 The near-surface residual stresses primarily influence the relieved strains. The influences of the interior stresses diminish rapidly with their depth from the surface. Thus, hole-drilling measurements are mainly sensitive to near-surface stresses; deep interior stresses cannot be identified reliably. 1.2.2 This test method applies in cases where material behavior is linear-elastic. When near-yield residual stresses are present, it is possible for local yielding to occur due to the stress concentration around the drilled hole. Satisfactory measurement results can be achieved when the residual stresses do not exceed about 80 % of the material yield stress (1).2 1.3 Specimen Damage: 1.3.1 Compared with most other mechanical methods for measuring residual stresses, the hole-drilling method does relatively modest damage to the specimen, and is often described as “semi-destructive.” However, since hole drilling does cause some damage, this test method should be applied only in those cases either where the specimen is expendable, or where the introduction of a small shallow hole will not significantly affect the usefulness of the specimen. 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 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. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 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 hole-drilling; integral method; residual stress measurement; strain gages; stress analysis ; ICS Code ICS Number Code 77.040.10 (Mechanical testing of metals) DOI: 10.1520/E0837-25 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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