Index Catalog // ScholarsArchive@OSU

Non-Destructive Detection and Monitoring of Durability Issues in Wood Panels under Accelerated-Weathering

Creator:: Laleicke, Paul Frederik
Abstract:: Many wood composites are known to poorly resist the effects of moisture and temperature extremes over time. Degradation of adhesive bonds, irreversible thickness swell and dimensional instability result in a decrease of properties and a possible failure of the material. Accelerated weathering has become an essential tool for assessment of...
Resource Type:: Dissertation
Full Text:: accelerated weathering. Mechanical testing and dimensional monitoring were conducted to provide

Diaphragm action of diagonally sheathed wood panels

Creator:: Forest Products Laboratory (U.S.) and Doyle, D. V.
Resource Type:: Technical Report
Full Text:: of joints made with full-size members and fastenings. The testing of a full- scale unit as it would

Non-destructive determination of yield stress for in-situ gusset plates

Creator:: Pflaum, Therese Michelle
Abstract:: Failure of a gusset plate that caused the I-35W Bridge collapse in Minneapolis, MN resulted in mandated rating of connections by the Federal Highway Administration (FHWA). Rating connections requires material properties as an input. The material properties are generally reported on the available detailed drawings for bridges. However, some bridges...
Resource Type:: Masters Thesis
Full Text:: present there are no recognized, non-destructive testing methods available to establish the yield stress

Development of acoustic emissions testing procedures applicable to conventionally reinforced concrete deck girder bridges subjected to diagonal tension cracking

Creator:: Lovejoy, Steven C.
Abstract:: A need exists to develop a non-destructive testing technique that can identify the formation and propagation of diagonal tension cracks in conventionally steel reinforced concrete deck girder (RCDG) highway bridges in the State of Oregon. Such a technique could be included into a structural health monitoring (SHM) system installed on...
Resource Type:: Dissertation
Full Text:: , 2006. Title: Development of Acoustic Emissions Testing Procedures Applicable to Conventionally

Wood-adhesive bondline analyses with micro x-ray computed tomography

Creator:: Paris, Jesse Loren
Abstract:: There is no doubt that adhesive penetration plays an important role in wood bondline joint performance and durability; yet, to date there is no direct experimental evidence linking penetration depth with bond performance. This is, in part, because adhesive penetration is commonly assessed with various 2D microscopy techniques that are...
Resource Type:: Dissertation

Preliminary evaluation of a vacuum-induced concentrated-load sandwich tester

Creator:: Ericksen, Wilhelm S., Kuenzi, Edward W., Heebink, Bruce G., and Forest Products Laboratory (U.S.)
Abstract:: Information reviewed and reaffirmed 1958. Original report issued June 1952.
Resource Type:: Technical Report
Full Text:: , Obviously, a testing device would be most useful if a nondestructive test could be made that would not only

Commissioning of the NDDL-40 Neutron Detection System at Oregon State University

Creator:: Boulton, Nicholas M.
Abstract:: The Neutron radiography facility (NRF) at Oregon State University (OSU) has been modified to begin working on the non-destructive evaluation of concrete materials to study the early stages of shrinkage, cracking, and water transport of concrete during the curing process. The objective of this work is to investigate the efficiency...
Resource Type:: Masters Thesis
Full Text:: also been extensively used for nondestructive testing for quality control. For instance, the

An Active Interrogation Technique Based on Photofission for Non-destructive Assay of Used Nuclear Fuel

Creator:: Wen, Xianfei
Abstract:: High-energy delayed γ-rays from photofission were demonstrated to be signatures for detection and identification of special nuclear materials. Such γ-rays were measured in between linac pulses using independent data acquisition systems. A list-mode system was developed to measure low-energy delayed γ-rays after irradiation. Photofission product yields of ²³⁸U and ²³⁹Pu...
Resource Type:: Dissertation
Full Text:: . ............................ 78 Figure 4.4 A schematic drawing of the experimental setup for testing of the effect of feedback

Investigation of methods of inspecting bonds between cores and faces of sandwich panels of the aircraft type

Creator:: Heebink, Bruce G., Mohaupt, Alvin A., and Forest Products Laboratory (U.S.)
Abstract:: This report is one of a series issued in cooperation with the Army-Navy-Civil Committee on Aircraft Design Criteria under the supervision of the Aeronautical Board.
Resource Type:: Technical Report
Full Text:: nondestructive test to insure the detection and subsequent rejection of inferior bonds between the cores and

Use of Virtual Visual Sensors in the Determination of Natural Frequencies of Timber Structures for Structural Health Monitoring

Creator:: Walker, Kristopher
Abstract:: Many nondestructive techniques for structural health monitoring are subjective and based on visual observations of degradation. In addition, dynamic properties of structures are already used to obtain quantitative structural health data. However, most current data collection is limited to localized damage on the structure, rather than global response. Recent research...
Resource Type:: Masters Thesis
Full Text:: : ____________________________________________________________________________ Rakesh Gupta Thomas H. Miller Many nondestructive techniques for structural health

ScholarsArchive@OSU

Non-Destructive Detection and Monitoring of Durability Issues in Wood Panels under Accelerated-Weathering

Diaphragm action of diagonally sheathed wood panels

Non-destructive determination of yield stress for in-situ gusset plates

Development of acoustic emissions testing procedures applicable to conventionally reinforced concrete deck girder bridges subjected to diagonal tension cracking

Wood-adhesive bondline analyses with micro x-ray computed tomography

Preliminary evaluation of a vacuum-induced concentrated-load sandwich tester

Commissioning of the NDDL-40 Neutron Detection System at Oregon State University

An Active Interrogation Technique Based on Photofission for Non-destructive Assay of Used Nuclear Fuel

Investigation of methods of inspecting bonds between cores and faces of sandwich panels of the aircraft type

Use of Virtual Visual Sensors in the Determination of Natural Frequencies of Timber Structures for Structural Health Monitoring

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