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A comparison of experimental mode I analysis methods for the interlaminar fracture toughness characterization of graphite/epoxy composite materials

Creator:: Keary, Paul Edward
Abstract:: Three approaches for evaluating mode I interlaminar strain energy release rates in graphite/epoxy composites were compared using experimental data from double cantilever beam specimens. Expressions for evaluating strain energy release rates were arrived at based on assumptions regarding specimen geometry and material behavior. The calculations included the direct method of...
Resource Type:: Masters Thesis
Full Text:: support of the work from which this thesis evolved. Finally, I would like to thank Dr. Tim Kennedy, Dr

Simulating changing diameter distributions in a softwood sawmill

Creator:: Salichon, Maxence C.
Abstract:: Sawmills are very complex systems that involve many manufacturing processes. The variability of their raw material adds further to this complexity as each log has characteristics that determine its processing path. Therefore, computer simulation is a very useful technique for analyzing sawmill performance. This thesis describes a simulation computer model...
Resource Type:: Masters Thesis
Full Text:: Kennedy Sawmills are very complex systems that involve many manufacturing processes. The variability of

A study of forces on simulated heat exchange tubes immersed in a cold fluidized bed

Creator:: Donovan, Jerry Eugene
Abstract:: The object of this research, project was to study how different parameters effect the magnitude and frequency composition of forces exerted on simulated heat exchange tubes immersed in a cold fluidized bed. Two arrays of tubes were assembled with the tubes mounted in an equilateral triangular pitch pattern. The center...
Resource Type:: Masters Thesis
Full Text:: C. Kennedy) The object of this research, project was to study how different parameters effect the

Evaluation of factors contributing to the failure of cast iron water mains

Creator:: Takahashi, Gilbert Tamaji
Abstract:: An evaluation was made of factors contributing to the service failure of a 12 inch diameter cast iron water pipe in Pendleton, Oregon. The quality of the pipe was found to be acceptable when compared to the acceptance limits established by the American National Standards Institute, Inc. However it exhibited...
Resource Type:: Masters Thesis
Full Text:: FACTORS CONTRIBUTING TO THE FAILURE OF CAST IRON WATER MAINS Approved by: r's I "Professor Roger

Catastrophic propagation of ductile cracks in metallic foils

Creator:: Elliott, Leonard Thomas
Abstract:: The sudden failure of metal structures under load, which has been a design problem for many years, is characterized by a crack propagation rate which approaches the speed of sound in the material. These failures, which are often known as catastrophic fractures, may be divided into two types which depend...
Resource Type:: Masters Thesis
Full Text:: obtained and in the PreParation of the thesis. The author also wishes to thank Professor o. G. Paasche of

Control of peak stresses in tensile testing machine components subjected to shock loading

Creator:: Mitchell, Jack Alan
Abstract:: The mechanical properties of materials at cryogenic temperatures have been the subject of increasing interest during the past few years, although very little actual materials testing has been done at extremely low temperatures because of the high cost and low heat of vaporaization of liquid helium. Recently, the Department of...
Resource Type:: Masters Thesis
Full Text:: School Date thesis is presented G% Typed by Ilia W. Atwood Cyi 7/ fj ACKNOWLEDGEMENTS The

The significance and measurement of the Tsai-Wu normal interaction parameter F₁₂

Creator:: Hansen, William Christian
Resource Type:: Masters Thesis
Full Text:: thank Dr. Bill Warnes, Dr. Brian Dodd and Dr. Tim Kennedy for their time and consideration for serving

Composite and adhesive technology applied to chain saw guide bars

Creator:: Gabel, Preston S.
Abstract:: Increased competition in the market place for both occasional and professional chain saw users has led to a desire for improved performance in chain saw guide bars. One aspect of improved performance is lower bar weight. The primary focus of this research was to establish the feasibility of a lower...
Resource Type:: Masters Thesis
Full Text:: would also like to give a special thanks to Dr. Ernest G. Wolff for help, guidance and support

Using discrete-event simulation to study the influence of log yard sorting on sawmill processing efficiency of small-diameter timber

Creator:: Pinon, Olivia J.
Abstract:: A sawmill is similar to other manufacturing enterprises when it comes to making decisions, scheduling production and meeting customer demands. In order to help sawmills achieve their goals, and because there is such a high degree of variability in the raw material used in this industry, computer simulation has proven...
Resource Type:: Masters Thesis
Full Text:: Small-Diameter Timber Abstract approved: / James W. Funck / Timothy C. Kennedy A sawmill is similar

Creep of Gr/BMI composite laminates in compression

Creator:: Tyagi, Sanjeev R.
Abstract:: The main source of the time-dependent behavior of fiber-reinforced composites is their polymeric matrix, which causes concerns about their long term durability. Although for composites where organic fibers such as Graphite are used, the fibers are also a contributing factor. A composite material may exhibit an appreciable amount of creep,...
Resource Type:: Masters Thesis
Full Text:: program. I would like to thank Dr. Timothy C. Kennedy, Dr. David G. Ullman and Dr. Rasaratnam Logendran

ScholarsArchive@OSU

A comparison of experimental mode I analysis methods for the interlaminar fracture toughness characterization of graphite/epoxy composite materials

Simulating changing diameter distributions in a softwood sawmill

A study of forces on simulated heat exchange tubes immersed in a cold fluidized bed

Evaluation of factors contributing to the failure of cast iron water mains

Catastrophic propagation of ductile cracks in metallic foils

Control of peak stresses in tensile testing machine components subjected to shock loading

The significance and measurement of the Tsai-Wu normal interaction parameter F₁₂

Composite and adhesive technology applied to chain saw guide bars

Using discrete-event simulation to study the influence of log yard sorting on sawmill processing efficiency of small-diameter timber

Creep of Gr/BMI composite laminates in compression

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