Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Chris N. McCowan"'
Publikováno v:
Journal of Research of the National Institute of Standards and Technology
The possibility for NIST to certify Charpy reference specimens for testing at room temperature (21 °C ± 1 °C) instead of −40 °C was investigated by performing 130 room-temperature tests from five low-energy and four high-energy lots of steel on
Publikováno v:
Materials Science and Engineering: A. 551:140-148
Fracture surfaces of X100 pipeline steels were examined with optical and electron microscopy after crack tip opening angle fracture testing. Some fracture surfaces exhibited chevron-shaped fracture patterns that are markedly different from classic ch
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
Publikováno v:
Pipelines 2011.
The National Institute of Standards and Technology (NIST) and Virginia Tech (VT) hosted a workshop entitled “Measuring Up to Sustainable Water" on September 9 – 10, 2010 in Falls Church, Virginia. The workshop identified opportunities and knowled
Publikováno v:
Journal of ASTM International. 8:103239
Two Charpy machines were used to test NIST verification specimens at three energy levels: low energy (∼15 J at −40°C), high energy (∼100 J at −40°C), and super-high energy (∼240 J at room temperature). The study evaluates the differences
Autor:
M. R. Mitchell, R. E. Link, Enrico Lucon, Marc Scibetta, J. David McColskey, Chris N. McCowan
Publikováno v:
Journal of Testing and Evaluation. 37:102330
One of the key factors for obtaining reliable instrumented Charpy results is the calibration of the instrumented striker. The conventional approach for establishing an analytical relationship between strain gage output and force applied to the transd
Publikováno v:
Journal of Testing and Evaluation. 37:102094
An investigation has been conducted on the influence of impact machine variables and specimen positioning on characteristic forces and absorbed energies from instrumented Charpy tests. Brittle and ductile fracture behavior has been investigated by te
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