ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Critical specimen geometry parameters are varied to determine their effect on tensile behavior as a function of rate of testing. Their influence on elongation and energy absorption is pronounced, particularly at low values of specimen cross sectional area and thickness. These effects are attributed to surface imperfections resulting from specimen preparation, and to changes occurring in the combined stress pattern in the specimen. High speed photography and microscope analysis techniques have been developed to determine strain, strain distribution, and strain rate in the specimen gage section during deformation. Elongation measured outside the gage section can be a significant portion of overall specimen deformation; actual strain rate is a fraction of that obtained by assuming all deformation takes place in the gage section. Experimentation is statistically designed and the data statistically analyzed by sequential factorial analysis. Tensile stress response surfaces are accurately predicted by this technique.
Additional Material:
14 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1964.070080105
Permalink
