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Browsing AE Theses and Dissertations by Title

Browsing AE Theses and Dissertations by Title

Now showing items 68-77 of 77

Scaling studies on the tensile strain rate sensitivity of laminated composites

Siddiqui, Md. Tareq (Wichita State University, 2011-12)

The stress-strain behavior and failure of composite materials are strain rate sensitive, and influenced by the dimensions of the structure. To elucidate the combined effects of scaling and strain rate on the strength of ...
Shock wave turbulent boundary layer interaction over a protrusion

Badr, Mohammad Ali (Wichita State University, 2011-05)

This research attempts to investigate an important and common phenomenon in aerodynamics called shock interaction in a turbulent flow’s boundary layer. Due to advancements in current computational units, more complex ...
Strain energy release rate analysis of adhesive-bonded composite joints with a prescribed interlaminar crack

Chadegani, Alireza (Wichita State University, 2008-05)

Composite materials together with adhesive-bonding have been increasingly used in the aviation industry. Delamination is among the critical failure modes in fiber-reinforced laminated composite structures including ...
Stress concentrations due to countersunk holes in adhesively bonded bi-layered aluminum subjected to tensile loading

Raghavan, Bharadwaj Veera (Wichita State University, 2011-07)

The adhesively bonded layered aluminum is used in aircraft structures to avoid knife edge situations when flush head fasteners are used with minimum gage skins. Due to the countersunk hole and adhesive bonding, stress flow ...
Structural teardown and analysis: evolution of the teardown process

Laubach-Hock, Melinda (Wichita State University, 2011-12)

Due to current economic conditions, aircraft are being operated to their design life and often beyond. In order to assess the true condition of these aging aircraft structures, structural teardowns have become more common ...
A study of gurney flaps and their influence on an airfoil in ground effect

Davis, Eric Fred (Wichita State University, 2010-12)

As an aircraft wing approaches the ground, within a chord-length distance, it experiences an increase in lift and a decrease in drag. This is known as ―ground effect.‖ Furthermore, a Gurney flap positioned perpendicular ...
Transverse compressive properties of honeycomb core under oblique loading

Thotakuri, Manoj Varma (Wichita State University, 2007-12)

The transverse compressive behavior of honeycomb cores has been widely exploited for energy absorption applications in the automotive and aerospace industry. The energy absorption in honeycomb cores with thin reinforced ...
Turbulent boundary layer models for acoustic analysis

Miller, Teresa S. (Wichita State University, 2011-05)

An analysis of the three types of turbulent boundary layer (TBL) models for acoustic analysis is presented because current preferred models over-predict TBL contributions to aircraft interior noise predictions. The mean ...
Viscoelastic relaxation in bolted thermoplastic composite joints

Schmitt, Ron R. (Wichita State University, 1991-12)

Results from a research program to investigate the long term effects of through-the-thickness fastener clamp-up force (preload) relaxation on the strength of mechanically fastened joints for two graphite/thermoplastic composite ...
Vortex burst behavior of a dynamically pitched delta wing under the influence of a von Kàrmàn vortex street and unsteady freestream

Heron, Ismael (Wichita State University, 2007-12)

An experimental investigation was undertaken at Wichita State University in order to quantify the vortex burst behavior of a pitching 70-degree sweep delta wing subjected to a variable freestream velocity (accelerating ...