Designation: E 111 – 97Standard Test Method forYoung’s Modulus, Tangent Modulus, and Chord Modulus1This standard is issued under the fixed designation E 111; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e ) indicates an editorial change since the last revision or reapproval.This specification has been approved for use by agencies of the Department of Defense.1. Scope1.1 This test method2 covers the determination of Young’smodulus, tangent modulus, and chord modulus of structuralmaterials. This test method is limited to materials in which andto temperatures and stresses at which creep is negligiblecompared to the strain produced immediately upon loading andto elastic behavior.1.2 Because of experimental problems associated with theestablishment of the origin of the stress-strain curve describedin 8.1, the use of either initial tangent modulus (that is, theslope of the stress-strain curve at the origin) or secant modulusis not recommended and their determination is outside thescope of this test method.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:E 4 Practices for Force Verification of Testing Machines3E 6 Terminology Relating to Methods of Mechanical Test-ing3E 8 Test Methods for Tension Testing of Metallic Materials3E 9 Test Methods of Compression Testing o...
