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About This Item
Full Description
1.1.1 The recommended specimen thickness, B, for the SE(B) and C(T) specimens is that of the material in thicknesses intended for an application. For the A(B) specimen, the recommended depth, W, is the wall thickness of the tube or pipe from which the specimen is obtained. Superficial surface machining may be used when desired.
1.1.2 For the recommended three-point bend specimens [SE(B)], width, W, is either equal to, or twice, the specimen thickness, B, depending upon the application of the test. (See 4.3 for applications of the recommended specimens.) For SE(B) specimens the recommended initial normalized crack size is 0.45 ≤ a o/W 0.70. The span-to-width ratio ( S W) is specified as 4.
1.1.3 For the recommended compact specimen [C(T)] the initial normalized crack size is 0.45 ≤ a o/W 0.70. The half-height-to-width ratio (H/W) equals 0.6 and the width to thickness ratio W/ B is specified to be 2.
1.1.4 For the recommended arc-shaped bend [A(B)] specimen, B is one-half the specimen depth, W. The initial normalized crack size is 0.45 a o/W 0.70. The span to width ratio, S/W, may be either 3 or 4 depending on the ratio of the inner to outer tube radius. For an inner radius, r 1, to an outer radius, r 2, ratio of 0.6 to 1.0, a span to width ratio, S/W, of 4 may be used. For r 1/r 2 ratios from 0.4 to 0.6, an S/W of 3 may be used.
1.2 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 and health practices and determine the applicability of regulatory limitations prior to use.
Document History
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ASTM E1290-08e1
Standard Test Method for Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement (Withdrawn 2013)- Most Recent
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ASTM E1290-08
Standard Test Method for Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement- Historical Version
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ASTM E1290-07e1
Standard Test Method for Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement- Historical Version
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ASTM E1290-07
Standard Test Method for Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement- Historical Version
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ASTM E1290-02e1
Standard Test Method for Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement- Historical Version
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ASTM E1290-02
viewing
Standard Test Method for Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement- Historical Version
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ASTM E1290-99
Standard Test Method for Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement- Historical Version