Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1987-01-16
1987-11-24
Levy, Stewart J.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
374142, G01N 320
Patent
active
047080205
ABSTRACT:
An apparatus and process for testing a panel for strength and stiffness has the ability to handle panels of different thicknesses, and also has a temperature sensor so that panels can be tested hot and the cold end use strength and stiffness correlated. The apparatus moves the panel in an "S" shaped path through a series of rollers, and measures the load to deflect the panel a predetermined distance for different thicknesses of panels. An algorithm is used to correlate the cold end use strength and stiffness values from the temperature and loading figures.
REFERENCES:
patent: 3143878 (1964-08-01), Hoyle, Jr. et al.
patent: 3194063 (1965-07-01), McKean
patent: 3196672 (1965-07-01), Keller
patent: 4313348 (1982-02-01), Madsen
patent: 4408903 (1983-10-01), Baldasarri
Metriguard, Inc. brochure, "Portable Stress Wave Timer", 1980.
Metriguard, Inc. brochure, "In-Line Stress Wave System", 1978.
Lau Kenneth K.
Yelf Jack T.
Levy Stewart J.
MacMillan Bloedel Limited
Raevis Robert R.
Rowley C. A.
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