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

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

This new ASTM handbook introduces the idea that of the grasp Curve approach so it may be understood and utilized by engineers who've had restricted publicity to elastic-plastic fracture mechanics and/or complex statistical equipment. It addresses the sensible design-related challenge of defining the ductile-to-brittle fracture transition temperature of structural steels without delay when it comes to fracture mechanics information. issues conceal: • heritage and ancient features • facts validity specifications imposed on try out info, and the variety of facts required to represent a statistically useable info set for picking a reference temperature, To • try out specimens that may be used to improve legitimate KJc • Fixturing and try out apparatus wishes • training of specimens (precracking and side-grooving) for checking out • try out machines, their mode of operation, and suggested specimen loading premiums • all the info had to calculate values of KJc • Scale parameter statistical equations for fabric trying out • moment alternative for calculating the To temperature that's useable while KJc information were generated at quite a few try temperatures • How the range of KJc values is dealt with utilizing the three-parameter Weibull version • details on ideas lower than research • short dialogue of significant concerns taken with without delay utilizing grasp Curve fracture durability info to the fracture-safety research of tangible buildings

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

Example text

2 is the highest ranked valid Kit value. 5 / 1) TM + 20 Mpa,v/'m N (Kjc(i) - where: N = 12, F = 7j Ko(1T) K]c(m~A) = = 186 M P a ~ ' ~ , 171 MPa#rm, and = I~ To 1T X2. 2 In this data set, there are no censored data. 1 X 2 . 3 Determine K o using E q . X 1 . 4 M P a V " m . X 2 . 4 Position Master Curve: To= T - ( 0 . 019 = - 8 0 ~ X 2 . 2) Kjc(med) = 3 0 + 7 0 e x p [ 0 . 0 1 9 ( T + 80)] X 2 . 5 . 1 S e e Fig. X 2 . 1 . 600 I I I A533B AT - 75~ MASTER CURVE FOR 1T 5 0 0 -- DISTRIBUTIONS/DEVELOPED FROM Y2TCT DATA I Kj (reed) = 400 " I I / / / / " o_ 300 g v ~ 200 100 -150 I I I I I -100 -50 0 50 100 150 TEST TEMPERATURE (~ Note 1--Toughness data are converted to 1T equivalence.

16, R 183-86, 1980. [23] McAfee, W. , Bass, B. , and McCabe, D. , "An Investigation of Shallow-Flaw Effects on the Master Curve Indexing Parameter (To) in RPV Material," ORNL/NRC/LTR-99/28, Oak Ridge National Laboratory, Oak Ridge, TN, April 2000. [24] ASTM Standard E 1820-01 "Test Method for Measurement of Fracture Toughness," Annual Book of ASTM Standards, Vol. 01, ASTM International, West Conshohocken, PA, 1998. [25] ASTM Standard E 647, "Test Method for Measurement of Fatigue Crack Growth Rates," Annual Book of ASTM Standards, Vol.

4 M P a V " m . X 2 . 4 Position Master Curve: To= T - ( 0 . 019 = - 8 0 ~ X 2 . 2) Kjc(med) = 3 0 + 7 0 e x p [ 0 . 0 1 9 ( T + 80)] X 2 . 5 . 1 S e e Fig. X 2 . 1 . 600 I I I A533B AT - 75~ MASTER CURVE FOR 1T 5 0 0 -- DISTRIBUTIONS/DEVELOPED FROM Y2TCT DATA I Kj (reed) = 400 " I I / / / / " o_ 300 g v ~ 200 100 -150 I I I I I -100 -50 0 50 100 150 TEST TEMPERATURE (~ Note 1--Toughness data are converted to 1T equivalence. Fig. 2 X3. ~d) = 137 MPacrm; To(~0#2 = -42~ E s t i m a t e d t e m p e r a t u r e r a n g e o r u s a b l e data: = ~o(est)#2 + 5 0 ~ = -92~ < T / < +8~ N o w c o n d u c t a d d i t i o n a l testing w i t h i n this r a n g e for To d e t e r m i n a t i o n .

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