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Full-Text Articles in Structural Materials
A Substructuring Technique With Application To Spot Weld Placement Design, Yang Wang
A Substructuring Technique With Application To Spot Weld Placement Design, Yang Wang
Mechanical & Aerospace Engineering Theses & Dissertations
It is quite common in the industry to use various interface methods, such as welding, fasteners, bolts, adhesive bonding, etc., to join substructures together. The quality of the assembled structure is directly related to the type of the interface methods used in the manufacturing process. Thus, it is important to include the interface conditions as part of design variables in any design process. To this end, this work develops a reanalysis method that can efficiently analyze structures with variations on the interface conditions. This reanalysis method is based upon a new two-step substructuring technique. The first step performs substructural level …
Research Experiences For Undergraduates: Advanced Engineered Wood Composites, Eric N. Landis, Habib J. Dagher
Research Experiences For Undergraduates: Advanced Engineered Wood Composites, Eric N. Landis, Habib J. Dagher
University of Maine Office of Research Administration: Grant Reports
The aim of this program is interdisciplinary research experience for undergraduate science and engineering students. The focal point is the development of the next generation of engineered wood composites for construction applications. The disciplines involved include structural engineering, mechanics, composite materials, and wood science. The educational paradigm will be one of combining hands-on laboratory work with training in fundamental science and engineering principles. Previous experience with REU sites indicates that many students become interested in graduate research when they are able to see the fruits of their work used in some application. Thus the basis of this REU site is …
Application Of Dynamic System Identification To Timber Beams - Part Ii, S T. Peterson, D I. Mclean, M D. Symans, David Pollock, W F. Cofer, R N. Emerson, Kenneth J. Fridley
Application Of Dynamic System Identification To Timber Beams - Part Ii, S T. Peterson, D I. Mclean, M D. Symans, David Pollock, W F. Cofer, R N. Emerson, Kenneth J. Fridley
Faculty Publications - Biomedical, Mechanical, and Civil Engineering
In a companion paper, a method of global nondestructive evaluation (NDE) for identifying local damage and decay in timber beams was developed and verified analytically using a finite-element model of a timber beam. The previously presented method of damage localization employs experimental modal analysis and an algorithm that monitors changes in modal strain energy between the mode shapes of a damaged beam with respect to the undamaged state of the beam. In this second part of a two-part paper, experimental laboratory tests on simply supported timber beams are presented to verify the capabilities and determine the limitations of the proposed …
Application Of Dynamic System Identification To Timber Beams - Part I, S T. Peterson, D I. Mclean, M D. Symans, David Pollock, W F. Cofer, R N. Emerson, Kenneth J. Fridley
Application Of Dynamic System Identification To Timber Beams - Part I, S T. Peterson, D I. Mclean, M D. Symans, David Pollock, W F. Cofer, R N. Emerson, Kenneth J. Fridley
Faculty Publications - Biomedical, Mechanical, and Civil Engineering
In this first part of a two-part paper, development of a method of dynamic system identification for timber beams is presented with an analytical verification of the method using a finite-element model. A method of global nondestructive evaluation for identifying local damage and decay in timber beams is investigated in this paper. Experimental modal analysis is used in conjunction with a previously developed damage localization algorithm. The damage localization algorithm utilizes changes in modal strain energy between the mode shapes of a calibrated model, representing the undamaged state of the beam of interest, and the experimentally obtained mode shapes for …