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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 73 for “"stringer"”.
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Design analysis of single-span advanced composite deck-and-stringer bridge systems
… of cellular box decks and wide-flange I-beams as stringers is presented. The design analysis covers: (1) ply stiffnesses and strengths; (2) laminate engineering stiffnesses; (3) apparent stiffness properties for composite decks; and (4) stringer stiffness properties. Finite element modeling is …
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The Effectiveness of Splicing Notched Pallet Stringer Segments With Metal Connector Plates
Notched stringer segments spliced with metal connector plates (MCPs) and pallets with spliced stringer(s) were tested in static bending in order to determine the relative effectiveness of different stringer splicing methods and under what conditions the process is or is not effective. The species …
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A Method for A Forced Vibration Analysis of A Flat Skin-Stringer-Frame Structure
Made available in DSpace on 2014-12-09T18:12:22Z (GMT). No. of bitstreams: 1 6812107.pdf: 3374060 bytes, checksum: 7758862d70f85ae97c82b11337411c25 (MD5) Previous issue date: 1968
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The effect of stringer design and leading-edge design on the strength characteristics of wooden pallets
… static flexure tests were performed on pallet stringers notched with six different fillet radii. These notches were cut with a band-saw or a stringer-notcher. Attempts were made to reduce the incidence of stringer fracture between the notches (a) by nail-reinforcing the stringers adjacent to …
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Rhetorical strategies of foreign executives in revitalizing Japanese global enterprise
Carlos Ghosn of Nissan and Sir Howard Stringer of Sony are the first non-Japanese top executives of Japanese global enterprises. At the time they were appointed CEOs, both companies were in crisis: Nissan almost facing bankruptcy and sale; Sony coping with a huge deficit and threats from emerging …
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Statistical modelling and inference for financial auditing
… the estimates, has been found unreliable, (e.g. Stringer 1963, Kaplan 1973, and Neter and Loebbecke 1975, 1977). Several alternative methods have been proposed, of which the Stringer bound (Stringer 1963), is the most widely used. This bound, while overcoming the unreliability problem of the …
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Numerical methods in wave propagation in periodic structures
… constant is derived.</p> <p class="MsoNormal">Stringer-stiffened plates and ring-stiffened cylinders undergoing only axi-symmetric motion are analysed by using this general theory. The effect of coupling between transverse and torsional movement of a support (stringer) is considered.</p> <p …
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Predicting the static bending behavior of pallets with panel decks
… of pallets with at least one panel deck. stringer and block pallets were modeled using plate elements to simulate deck behavior and were validated by comparing predicted deflections to experimentally measured deflections. Differences were considerably less than the allowable 15 percent for …
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Load transfer in the stiffener-to-skin joints of a pressurized fuselage
… the inside by a regular arrangement of identical stringers and identical rings. Periodicity permits the analysis of a unit cell model consisting of a portion of the shell wall centered over one stringer-ring joint. The stringer-ring- shell joint is modeled in an idealized manner; the stiffeners …
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Measurement of Wood Pallet Performance Subjected to Uniform Loading in Racked, Fork Tine, and Floor Stacked Support Conditions
… and three, four, or five non-notched and notched stringers. The pallets were supported using racked across the length, racked across the width, fork truck tine, and floor stack support conditions. Structural analysis was used to determine the test loads for each pallet bending test. Pallet …
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The effect of riveted and uniformly spaced stringers on the stress intensity factor of a cracked sheet
The effect of riveted and uniformly spaced stringers on the stress intensity actor of a centrally cracked sheet is determined. Also obtained is the force in the critical rivet and stringer. The results are presented for two symmetrical cases of crack location: the crack initiating at a rivet, and …
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Evaluation of improved stevedore pallet
… used for fastening the inner deckboards to each stringer. The sequence of tests on each pallet started with the initial stiffness test, followed by the rigidity test, the impact-incline deckboard-stringer separation test, and the follow-up static stiff,!'1ess and load-carrying capacity tests. The …
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Investigation of New and Recovered Wood Shipping Platforms
… decrease from the 60% share found in 2011. Stringer class pallets remained the dominant pallet class with 76% share while block pallets and skids only accounted for 21% and 3% of the market, respectively. Approximately, 38% of these new wood pallets were heat treated. Furthermore, an …
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Structural analysis models for block pallets
… standardized design procedures for both stringer and block-type pallets. Phase I dealt exclusively with stringer-type pallets while Phase II expands the scope to include block-type pallets. The objective of this work was to develop methods to analyze the effects of loads, supports and …
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Lateral collapse potential of wood pallets
… analysis program. predicts K-factors for two stringer A closed form solution designs. These K-factors are used to modify the resisting moments generated by the fastened joints. The modified model was shown to slightly overpredict maximum collapse load but did accurately discern differences in …
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Case Study: The effect of pallet design on the performance of semi-automatic and fully-automatic warehouses
… warehouses, followed closely by the use of stringer class recycled wooden pallets. Despite this, stringer class recycled wooden pallets were identified as the main pallet class involved in pallet related downtime in semi/ fully automated warehouses/ DC facilities. Further results present a …
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Um modelo matemático para estabilidade elástica de cascas cilíndricas enrijecidas
… non-linear branching equilibrium paths of stringer stiffened cylindrical shells under axial compression is presented. This model is based on a general displacements solution of the dynamic non-linear differential equilibrium equations for an isotropic thin cylindrical shell. The stiffeners …
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Wood deck bridges-stress laminated wood panels on steel beams
… deck model stiffened with wide flange steel stringers for performance monitoring. The simulation accounted for typical HS-20 repetitive loadings offered by a mechanically controlled actuator.;Based on the results incorporated in this report and additional projects accredited in the literature …
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The effect of microstructure on the fracture toughness of a high strength steel
… than 1200 MPa was controlled by the major MnS stringer population. The fracture profile was zig-zag, each peak or trough terminating at a MnS stringer. A shear fracture mechanism has been proposed to account for the observed zig-zag fracture mode. The longitudinal fracture toughness was …
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