Bruce Wiersma
Westinghouse Electric
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Publication
Featured researches published by Bruce Wiersma.
Application of Fracture Mechanics in Failure Assessment | 2003
K.H. Subramanian; Bruce Wiersma; A. J. Duncan; S. P. Harris
A materials test program was developed to measure mechanical properties of A285 carbon steel under conditions relevant to waste storage tanks at the Savannah River Site. Fracture toughness and tensile testing were performed on ASTM Type A285 steels that span tank plate compositions. Variables relevant to the material and load conditions for Type I and Type II tanks were defined and a statistical test matrix was designed for fracture toughness testing. The test matrix consisted of eight variables expected to influence mechanical properties. The independent variables were carbon content, manganese content, sulfur content, thickness, pearlite fraction, and grain size. The responses were the fracture toughness JIc , and a figure-of-merit at J3mm to allow for sub-critical ductile crack growth. A total of 85 J-R curves were compiled. The full data set was used to construct statistical models to predict fracture properties as a function of metallurgical properties and operating conditions. Eight independent models resulting from combinations of loading rate (quasi-static, dynamic) and orientation (T-L, L-T) were developed. The statistical significance of terms was determined for each of the models. Thickness and grain size were found to be of statistical significance in the models developed for the dynamic strain rate testing data. Compositional variables were found to be of statistical significance for the quasi-static loading rate fracture toughness data.Copyright
Archive | 2010
E Elizabeth Hoffman; Philip E. Zapp; Bruce Wiersma; Thomas B. Edwards
Corrosion | 2007
C.S. Brossia; Colin Scott; John A. Beavers; Michiel P. H. Brongers; G.L. Edgemon; H. Berman; G. S. Frankel; Leon Stock; Bruce Wiersma
Corrosion 2013 Conference, Orlando, Florida (United States), 17-21 Mar 2013 | 2012
Bruce Wiersma; John I. Mickalonis; Karthik H. Subramanian
Archive | 2009
Colin David Scott; Feifei Gui; C. Sean Brossia; John A. Beavers; Glenn L. Edgemon; Kayle D. Boomer; G. S. Frankel; Leon Stock; Bruce Wiersma
Corrosion | 2011
H. Cong; Feng Gui; C.S. Brossia; John A. Beavers; G. S. Frankel; Kayle D. Boomer; Glenn L. Edgemon; Bruce Wiersma
Meeting Abstracts | 2010
G. S. Frankel; Xiaoji Li; C. Sean Brossia; Colin Scott; Feng Gui; John A. Beavers; Bruce Wiersma; Michael Terry
Archive | 2008
Bruce Wiersma; J James Elder
Archive | 2015
Bruce Wiersma; Matthew Maryak; Lindsay R. Baxter; Stephen P. Harris; James B. Elder
Archive | 2013
Bruce Wiersma; Karthik H. Subramanian; Keisha B. Martin