The purpose of this study was to determine the effect of dents on the stable crack growth in 0.04-in.-thick 2024-T3 bare aluminum sheet. The test specimens were either pristine, dented, or reworked. The edge-cracked ...

In many industries, the use of articulated robots has proven to be an efficient and beneficial way in which to reduce manufacturing costs, e.g., by increasing productivity through automating repetitive processes. However, ...

Icing can pose problems due to both accretions on aircraft aerodynamic surfaces as well as through shedding of large ice particles from aircraft surfaces. The shed ice causes damage by impacting downstream aerodynamic ...

A multi-entry experimental study was conducted to investigate the effects of roughness, simulated ice shapes, and various combinations of roughness and simulated shapes on aerodynamic performance of a reflection plane ...

With the world’s growing use of autonomous unmanned aerial systems (UASs), there is also a growing need for higher education to teach students how to design and implement the autopilot systems that many of these UASs depend ...

For this exploratory study, flight data of a Bell Model 205A-1 helicopter, flying under contract to the United States Forest Service, is analyzed to investigate its operational conditions. Usage of the helicopter, specifically ...

The methodology proposed in this research extends the current full-scale test approach based on the life factor and the load enhancement factor, and provides information necessary to define inspection intervals for composite ...

Structural elements are subjected to variable amplitude/spectrum fatigue loading where tensile overloads and compressive underloads may occur randomly. Depending on the magnitude of these loads, localized plastic deformation ...

The composite scarf joint configuration was utilized to simulate scarf-patch-repaired composite panels. An adhesive bonded scarf (tapered) joint was selected due to less peeling and shear stress over the bondline than with ...