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Showing 1 to 20 of 57 for “"Fastener"”.
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Kinematic Analysis of a Threaded Fastener Assembly
… on a common assembly primitive, threaded fastener insertion, in an effort to determine the nature of contact between a bolt and nut during thread mating. The assembly problem was initially simplified as a two-dimensional analysis to gain an understanding about how contacts between the bolt …
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Fastener withdrawal resistance of wood-based composite panel products
… The critical evaluation criterion was the fastener holding capacity of various sub-floor materials. To accomplish this, investigation of the in-plane density variations of currently available panel products was performed, as was an investigation of the relationship between panel density and …
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Withdrawal and combined load capacity of threaded fastener wood joints
… general models of the capacity of threaded fastener joints were developed from extensive experimental tests. One study objective was to develop a general model of threaded fastener withdrawal strength applicable to joints containing fasteners with widely varying thread geometries. A total of …
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Response of multiple fastener composite joints: numerical and experimental results
periments and predictions was found to be excellent around the net-section region. Although predictions for other strains were not as good, they were within the range of experimental data. Distribution of contact stresses between the pins and the hole edges was also studied. Numerical analysis …
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Torque Limit of a Mechanical Fastener in a Graphite/Epoxy Joint
… when specifying the preload of a mechanical fastener in a composite joint due to a lack of a fundamental knowledge base regarding the behavior of composites under fastener compressive load. As such, a novel experimental procedure was developed herein to determine the through-the-thickness …
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An Investigation of Damage Arrestment Devices Application with Fastener/Hole Interaction
… arrestment devices application interacts with a fastener in a composite sandwich panel. The primary objective of the damage arrestment device was to prevent the failure of the composite face sheet, such as crack propagation, around the hole/fastener joint. The damage arrestment devices are made …
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The influence of fastener spacing on the slip modulus between cold formed steel and wood sheathing
… this research is to determine the influence of fastener spacing on the slip modulus and provide a foundation of information to fully define the composite action between CFS and wood sheathing.
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Screw-Fastened Cold-Formed Steel-to-Steel Shear Connection Behavior and Models
… configuration and a single Hex #10 -washer head fastener, centered in a 102 mm by 102 mm three boundary window. The fastener tilting angle is captured using an automated, optical non-contact measurement procedure. The results are used to identify cold-formed steel shear connection deformation as …
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Determination of Lateral Resistance of Deck Tie Fasteners in Smooth Top Bridge Girders
… capacity and spacing requirements of deck tie fasteners in curved railroad bridges with smooth top girders. In railroad bridge design, required lateral resistance dictates the spacing of deck tie fasteners. Currently, no provisions exist to aid in the calculation of lateral resistance for …
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Railroad Tie Lateral Resistance on Open Deck Plate Girder Bridges
… bridge superstructure and anchored with deck tie fasteners such as hook bolts. These fasteners provide lateral resistance for the bridge ties. Currently there are no provisions to assist in the calculation of lateral resistance provided by railroad ties on open-deck bridges, and as a result there …
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Effect of surface hardening conditions on susceptibility of fasteners to hydrogen embrittlement
… to hydrogen embrittlement of case hardened steel fasteners. While case hardened fasteners have been studied previously, there are currently no processing guidelines supported by quantitative data for fastener standards. Through sustained load and incremental step load embrittlement testing …
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Evaluation of the joint performance estimates within the PDS durability procedure
… estimated joint performance. A series of delayed fastener axial withdrawal tests were performed on a wide range of pallet fasteners to evaluate the estimates of joint separation resistance that are used in the computation of the F ( 1) factor, the factor for joint separation resistance …
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An assessment of manufacturing quality variation and an SPC handbook for the pallet and container industries
… product such as raw material, cut-stock, fasteners, and workmanship. The raw material proved quite variable from the different sawmills. The between board variation was greater than the within for both the thickness and width. The cut-stock had less size variation in thickness than width. …
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Interaction of stainless steel threaded fasteners with stainless steel locking inserts
The interaction of stainless steel threaded fasteners with stainless steel locking inserts was investigated with special emphasis on high-vacuum environment applications. Nondestructive and destructive test methods were used in conjunction with information gathered from investigation with a …
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Lateral Torsional Buckling of Built-Up Beams
… along their vertical interfaces using discrete fasteners to provide partial composite action. These beams are increasingly used in modern timber structures because thin plies are more economical and more readily available than wide solid sections. However, when such members are employed in …
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Performance evaluation of mechanically attached roofing systems
… an analytical method can be used to predict fastener loads based upon uplift pressures and chamber geometry. Task 2, developed an experimental procedure to quantify the air leakage rate and identified its impact on the wind uplift resistance. The aspect ratio of the testing chamber plays a …
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Fatigue Enhancement of Undersized, Drilled Crack-Stop Holes
… was reported in the aerospace industry with fastener holes, which are potential sites for cracks to initiate and propagate. Static mechanical coldworking generated a great deal of interest in the 1970s and was among several processes that were investigated for improving fatigue life of …
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Effect of Galvanic Corrosion on Crack Propagation of Cold Expanded Holes in AA2024-T3
… for those effects. Galvanic corrosion of a steel fastener/aluminum plate assembly will be investigated assuming the presence of cracks in the aluminum plates. The specimens will be prepared to include an open hole with enough distance to allow cold expansion of commercial interest and will contain …
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