Zobrazeno 1 - 10
of 69
pro vyhledávání: '"H.J. Rathbun"'
Autor:
Douglas T. Queheillalt, S.A. Waltner, Hng Wadley, C. Mercer, Anthony G. Evans, Frank W. Zok, H.J. Rathbun
Publikováno v:
Acta Materialia. 54:5509-5518
The article focuses on the structural performance of sandwich beams with hollow truss lattice cores made from a ductile stainless steel. The trusses are arranged in an orthogonal (cross-ply) configuration, in either ±45° (diamond) or 0°/90° (squa
Publikováno v:
Engineering Fracture Mechanics. 73:2723-2747
A database derived from tests on specimens with a large range of ligament (b) and thickness (B) dimensions was systematically analyzed to evaluate constraint loss and statistical size effects on cleavage fracture toughness. The objectives were to: (1
Publikováno v:
Engineering Fracture Mechanics. 73:134-158
This paper, which is the first of two parts, describes a comprehensive experimental study to systematically measure constraint loss and statistical size effects on fracture toughness of a typical low alloy pressure vessel steel in the brittle-to-duct
Autor:
C. Mercer, Ming Y. He, Anthony G. Evans, Enrico Ferri, Robert M. McMeeking, Frank W. Zok, H.J. Rathbun
Publikováno v:
Philosophical Magazine. 85:3207-3234
Metallic sandwich panels with periodic lattice cores exhibit superior strength and blast resistance relative to monolithic plates of equivalent weight. Their implementation into engineering structures requires computationally-efficient analysis and d
Publikováno v:
Journal of Pressure Vessel Technology. 128:305-313
A systematic investigation of the effects of specimen size on the cleavage fracture toughness of a typical pressure vessel steel is reported. Size dependence arises both from: (i) statistical effects, related to the volume of highly stressed material
Publikováno v:
International Journal of Solids and Structures. 41:6249-6271
All-metallic sandwich panels with truss and prismatic cores have impending application as ultra-light load bearing panels amenable to simultaneous active cooling and blast resistance. To facilitate application, a protocol for characterizing the struc
Autor:
David J. Sypeck, Haydn N. G. Wadley, M.Y. He, Anthony G. Evans, H.J. Rathbun, Z. Wei, Frank W. Zok
Publikováno v:
Journal of Applied Mechanics. 71:368-374
Metallic sandwich panels with tetrahedral truss cores have been fabricated and their structural performance evaluated. A fabrication technique involving deformation-shaping and brazing has been used. The responses of the structure in core shear and p
Publikováno v:
Journal of Nuclear Materials. 323:313-340
We describe the highly efficient master curves–shifts (MC–ΔT) method to measure and apply cleavage fracture toughness, KJc(T), data and show that it is applicable to 9Cr martensitic steels. A reference temperature, T0, indexes the invariant MC s
Publikováno v:
International Journal of Solids and Structures. 40:5707-5722
Metallic sandwich panels with textile cores have been analyzed subject to combined bending and shear and then designed for minimum weight. Basic results for the weight benefits relative to solid plates are presented, with emphasis on restricted optim
Publikováno v:
Journal of Nuclear Materials. :1011-1015
An analysis of the transition fracture toughness and constitutive behavior of F82H and Eurofer97 reduced activation martensitic steels are presented in both unirradiated and irradiated conditions. The unirradiated toughness data for F82H show very st