Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Roger B. Clough"'
Publikováno v:
Materials Science and Engineering: A. 360:396-407
A practical method for measuring the hardness of metals at high strain rates (>10 3 s −1 ), using a dropped ball, is developed and demonstrated on cold-rolled plain carbon (1018) steel. The metal is assumed to be one-dimensional and rigid plastic.
Autor:
Walter G. McDonough, Roger B. Clough
Publikováno v:
Composites Science and Technology. 56:1119-1127
The Weibull shape and scale strength parameters of E-glass fibers were measured in situ by counting the number of acoustic emission events (fractures) during the fragmentation of single-fiber E-glass/epoxy composites. A median subtraction filter prov
Publikováno v:
Journal of Electronic Packaging. 117:270-274
Composite solder connections, modeled as miniature single-lap shear layers between copper plates, were fabricated and pulled to fracture. The solder layers (3.1 × 3.1 × 0.50 mm) were eutectic lead-tin/particulate Cu6Sn5 composites. Under load, shea
Publikováno v:
The Journal of the Acoustical Society of America. 98:2070-2081
In stochastic acoustic emission, both theory and experiments suggest that the power of the acoustic emission signal is proportional to the source energy. Hence, inference about the power is equivalent to inference about the source energy except for a
Autor:
Roger B. Clough, Abraham Manor
Publikováno v:
Composites Science and Technology. 45:73-81
A method for in-situ determination of fiber segment length and fracture strength during the deformation of opaque composites is described. It utilizes acoustic emission wave arrival times to determine the fracture sites during tensile straining. At t
Autor:
Michael F. Ashby, J.J. Wlassich, Roger B. Clough, Y. Geffen, R.J. Schaefer, Haydn N. G. Wadley, Arnold H. Kahn
Publikováno v:
Acta Metallurgica et Materialia. 39:979-986
A detailed experimental evaluation of mathematical models for densification during hot isostatic pressing (HIP) has been conducted using high purity copper powder as a model system. Using a new eddy current sensor, the density of cylindrical compacts
Publikováno v:
Metallurgical Transactions A. 21:2747-2757
Model metal-matrix composite tensile specimens, each containing a single SiC fiber in a single crystal of pure Al, were grown using a modified Bridgman method at two growth rates and with various fiber surface treatments in order to study their effec
Publikováno v:
Scripta Metallurgica. 15:417-422
Autor:
Roger B. Clough
Publikováno v:
Scripta Metallurgica. 9:1325-1329
Autor:
Haydn N. G. Wadley, Roger B. Clough
Publikováno v:
Metallurgical Transactions A. 13:1965-1975
Isothermal tempering at 500 °C (within the region rendering low alloy steels susceptible to reversible temper embrittlement) induced acoustic emission activity in A533B steel during indentation loading. Samples, when sectioned, were found to contain