Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"Wood composite"”.
-
Analytical Evaluations of Buckling Behavior of Wood Composite I-Joist with Sinusoidal Web
… buckling is an important limit state for wood composite I-joist because the in-plane bending stiffness is typically greater than torsional lateral bending stiffness. Web local buckling is another important limit state because of the thin-walled web configuration. To increase the buckling …
-
Lateral Movement of Unbraced Wood Composite I-Joists Exposed to Dynamic Walking Loads
… analysis of the mechanical behavior of a wood composite I-joist with different bracing configurations exposed dynamic walking loads. Three 16 in. deep GPI® 65 I-joists were simply supported and laid parallel to each other, while the bracing was attached to the top flange. Five different …
-
Lateral-Torsional Buckling Instability Caused by Individuals Walking on Wood Composite I-Joists
… on unfinished structures. Workers walking on wood I-joists on roofs and floors are prone to fall hazards. Wood I-joists have been replacing dimension lumber for many floor systems and a substantial number of roof systems in light-frame construction. Wood I-joists are designed to resist axial …
-
Study of West Virginia wood industry roundwood consumption in 1999
Use of wood composite products has increased over the last decade in the market for construction material. Softwood species and soft hardwood species are the preferred forest resources for manufacturing these products. Reduction in available softwood forest resources from the Western states has …
-
Isotope ratios in source determination of formaldehyde emissions
Formaldehyde emissions from non-structural wood composites are regulated and the regulation target is urea-formaldehyde (UF) resin. UF resins are hydrolytically unstable and constantly emit formaldehyde as a function of temperature and relative humidity. When heated, wood also generates …
-
Investigating Moisture Gradient-Induced Warpage of Veneers
Flatness of wood composite panels, such as Laminated Veneer Lumber, is often difficult to control during the manufacturing process. Out-of-plane deformation, or warpage, of wood veneers caused by changes in moisture content affects the ability to press flat panels. To understand wood panel warpage, …
-
The design of a panelized roof system for residential construction
… construction. One such type of component is the composite building panel, used for walls, roofs and floors. Presently the types of composite panels used in residential construction include pre-framed walls of standard construction and, more innovatively, structural foam core panels with wood or …
-
Laser Activated Bonding of Wood
It was found that laser modified wood surfaces can be bonded together to create a wood composite without the need of any additive. This bonding method removes the need of applying adhesive, potentially lowers cost, and eliminates off gassing of petroleum resins, creating a wood product with many …
-
Development of A Ready-To-Assemble Construction System
… developed in this project, that laminates wood or wood composite elements into larger building components. The laminated components can be bolted together to form various structural configurations. Decisions on the development of the RTA system were structured according to an Innovation …
-
Rheology And Organic Filler Interactions in Phenolic Resin Formulations
… resins are still crucial components used in the wood products industry. These PF resins are formulated into adhesives used to make plywood and various other wood composite products. For example, in the United States, 90 % of the homes are still frame homes that use plywood for construction. The …
-
Finite Element Analysis of Unbraced Structural Wood I-Joists Under Construction Loads
… the lateral and rotational response of unbraced wood composite I-joists to worker loads. All experimentation and modeling was conducted on simply supported I-joists varying from 11-7/8 inches to 14 inches in depth and 20 feet to 24 feet in length. I-joists were subjected to static and dynamic …
-
Failure Prediction of Adhesively Bonded Hardboard Doorskin Joints
Wood and wood based composites such as hardboard have become very common materials for use in non-structural applications, which include pre-finished paneling, siding, exterior trim, furniture, and door skins. This thesis describes the results of a study of the failure of hardboard door skins. …
-
Reconsidering Composite Action on Strength of Wood Roof Systems
… of photovoltaic (PV) modules on existing wood roof framing systems are considered. Often, existing roofs are inadequate to resist even current minimum design loads, much less the extra weight of PV modules. Rather than requiring expensive retrofits, it is desired to bring these …