Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Richard J. Fields"'
Publikováno v:
Fatigue & Fracture of Engineering Materials & Structures. 31:1065-1078
Crack tip opening angle (CTOA) is becoming one of the most accepted methods for characterizing fully plastic fracture. It provides a measure of the resistance to fracture for a material in cases where there is a large degree of stable-tearing crack e
Publikováno v:
International Journal of Impact Engineering. 35:511-520
Frangible bullets are designed to disintegrate on impact against rigid surfaces to avoid ricochet hazards in recreational shooting ranges or law enforcement training facilities. Their impact behavior against protective soft body armor is therefore qu
Autor:
Richard J. Fields, Frank W. Gayle, William E. Luecke, Thomas A. Siewert, Stephen W. Banovic, Tim Foecke, Chris N. McCowan, J. David McColskey
Publikováno v:
Journal of Failure Analysis and Prevention. 6:5-8
Autor:
James J. Filliben, Pedro V. Marcal, Roland deWit, Richard J. Fields, Barry Bernstein, Jeffrey T. Fong
Publikováno v:
Journal of Pressure Vessel Technology. 128:140-147
In this paper, we first review the impact of the powerful finite element method (FEM) in structural engineering, and then address the shortcomings of FEM as a tool for riskbased decision making and incomplete-data-based failure analysis. To illustrat
Publikováno v:
Materials Science and Engineering: A. 399:26-32
The residual stresses created by deep drawing of AISI-1010 cups were investigated by means of neutron diffraction. The wall thickness of the cups was below 3.0 mm, for which 8–10 through-thickness measurements were conducted. It was found that the
Autor:
Z. Cedric Xia, Timothy J. Foecke, Richard J. Fields, Thomas H. Gnaeupel-Herold, H.J. Prask, Ulrich Lienert
Publikováno v:
Materials Science and Engineering: A. 366:104-113
Fueled by pressures to reduce scrap and tooling costs, the modeling and prediction of springback has become a major focus of interest in sheet metal forming. Finite element codes and packages are being developed or improved but face the demand for hi
Publikováno v:
Materials Science and Engineering: A. :28-31
New ultra-small-angle X-ray scattering (USAXS) facilities at third generation synchrotron sources enjoy an additional one to three decades of X-ray brilliance over second generation instruments, and can now quantify microstructural features from 3 nm
Autor:
Richard J. Fields, A. Munitz
Publikováno v:
Powder Metallurgy. 44:139-147
Hot isostatic pressing (hipping) was performed on a variety of iron and iron alloy powders produced by attrition ball milling. Microhardness and compression tests were used to determine the mechanical properties. Fracture morphology was studied by sc
Publikováno v:
Nanostructured Materials. 11:159-177
The effect of nitrogen content in Fe powders on the mechanical properties and microstructure of cold isostatic pressed (CIPed) and sintered or hot isostatic pressed (HIPed) Fe powders which was produced by attrition ball milling was investigated. Mic
Autor:
Maureen E. Williams, Richard J. Fields, Frank S. Biancaniello, J.C. Rawers, Rodney D. Jiggetts
Publikováno v:
Scripta Materialia. 40:277-281