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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Full-Field Stress Analysis of Perforated Members from Aligned Single-Element Strain Gages
Author(s)
A. A. Khaja1 and R. E. Rowlands2
Full-Text PDF
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DOI:10.17265/2159-5275/2022.02.001
Affiliation(s)
1. Applied Materials, Inc., Santa Clara, CA 95138, USA
2. University of Wisconsin-Madison, Madison, WI 53706, USA
ABSTRACT
Engineering members often include cutouts. Although the structural integrity of such members can be highly influenced by associated stresses, determining them may be very challenging for finite shapes operating in an industrial environment. This is particularly so if the loading is not well known, a common occurrence in practical situations. While photomechanical methods can be effective, they necessitate optical access to the component, something which is also often unavailable. Recognizing the above, this paper demonstrates ability to determine the complete stresses throughout a perforated tensile plate using only aligned, single-element strain gages rather than multi-element rosettes. Although reliability is verified using finite elements, an objective of the technique is for situations when finite element methods are not feasible, e.g., the loading is inadequately known. The approach is applicable to members fabricated from isotropic, orthotropic or functionally-graded materials and is not restricted to a particular shape, cutout arrangement or loading condition.
KEYWORDS
Structural integrity, stress analysis, strains, reliability.
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