Download PDF by D. E. McCabe, J. G. Merkle, K. Wallin: An Introduction to the Development and Use of the Master

By D. E. McCabe, J. G. Merkle, K. Wallin

ISBN-10: 0803133685

ISBN-13: 9780803133686

ISBN-10: 0803145594

ISBN-13: 9780803145597

This new ASTM handbook introduces the idea that of the grasp Curve technique so it may be understood and utilized by engineers who've had restricted publicity to elastic-plastic fracture mechanics and/or complex statistical tools. It addresses the sensible design-related challenge of defining the ductile-to-brittle fracture transition temperature of structural steels at once by way of fracture mechanics facts. subject matters conceal: • heritage and historic features • information validity specifications imposed on try information, and the variety of facts required to represent a statistically useable info set for identifying a reference temperature, To • try specimens that may be used to improve legitimate KJc • Fixturing and try out gear wishes • education of specimens (precracking and side-grooving) for trying out • try machines, their mode of operation, and prompt specimen loading charges • the entire info had to calculate values of KJc • Scale parameter statistical equations for fabric checking out • moment alternative for calculating the To temperature that's useable while KJc information were generated at quite a few try out temperatures • How the variety of KJc values is dealt with utilizing the three-parameter Weibull version • info on innovations below learn • short dialogue of significant issues considering at once employing grasp Curve fracture sturdiness facts to the fracture-safety research of exact buildings

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Extra info for An Introduction to the Development and Use of the Master Curve Method (ASTM Manual) (Astm Manual Series, Mnl 52)

Sample text

Experimental Validation Work to Prove the Master Curve Concept," Fracture, Fatigue, and Weld Residual Stress, PVP, Vol. 393, ASME, August 1999, pp. 29-34. [27] Kirk, M. T. and Dodds, R. , "J and CTOD Estimation Equations for Shallow Cracks in Single Edge Notch Bend Specimens," Nuclear Regulatory Commission, NUREG/CR 5969, UILU-ENG-91-2013, July 1993. [28] Burington, R. , Sandusky, Ohio, 1949. [29] Wallin, K. "Recommendations for the Application of Fracture Toughness Data for Structural Integrity Assessments," Proceedings of the IAEAICSNI Specialists Meeting on Fracture Mechanics Verification by Large Scale Testing, NUREG/CP 0131, Oak Ridge National Laboratory, Oak Ridge, TN, 1992.

33 ORNL2003-02434/dgc 400 - MC ~ / 200 ~Z 100 - j ~ I -150 * J ~ " IT~ = -47~ -1 O0 -50 . . 0"6~ I I 0 50 Test Temperature (~ Fig. 6~163 applied to the 2 % tolerance bound of the Master Curve (ME). 1reConsideration of the Pre-Cracked Charpy Specimen EVEN THOUGH THE CHARPY (CVN) B E N D BAR IS SMALLER THAN ANY other candidate fracture mechanics specimen, it is being considered for use because it is the most common non-fracture mechanics specimen used in manufacturing and engineering applications.

5. No invalid Kj~ data have been discarded. ) equivalent thickness. 2inValid Plus Invalid Data at One Test Temperature The following equation was derived by m a x i m u m likelihood theory to use with mixed valid and invalid Kj~ data [1]. It is assumed here that: 1. All specimens have been tested at one test temperature. 2. All specimens are of ASTM E 1921 specified geometries. 3. If specimens were of varied sizes, the Kjc values have been converted to one c o m m o n size. See Note 3. 4. There are at least six valid Kjc values in the mix of valid/invalid data.

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An Introduction to the Development and Use of the Master Curve Method (ASTM Manual) (Astm Manual Series, Mnl 52) by D. E. McCabe, J. G. Merkle, K. Wallin


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