Failure of critical engine components such as compressor, fan, and turbine disks during flight can cause the loss engine, aircraft, or even life. To reduce risk this failure flight, different methodologies tools have been developed to determine safe operating life these disk components. The two most widely used lifing methods, safe-life damage tolerance, are inherently conservative, retiring al...

Vehicular crashes into buildings seem to be an on-going problem with severe consequences. When the building is of masonry, damage at impact zone more possible intrusion vehicle building, depending on velocity impact. In all these cases, vibration propagated from wall edges and then adjoining walls in can result their damage. While has been studied, propagation impacted potential for have not tr...

The reduction in host fitness caused by parasite infections (virulence) depends on infection intensity and the degree of damage per parasite. Environmental conditions can shape both virulence components, but contrast to intensity, environmental impacts per-parasite are poorly understood. Here, we studied effect ambient temperature damage, which is jointly determined ability parasites induce har...

The problem of deriving an upper tolerance limit for a ratio of two normally distributed random variables is addressed, when the random variables follow a bivariate normal distribution, or when they are independent normal. The derivation uses the fact that an upper tolerance limit for a random variable can be derived from a lower confidence limit for the cumulative distribution function (cdf) o...

Monotonic, multi-step and cyclic short beam shear tests were conducted on 2D and 3D woven composites. The test results were used to determine the effect of z-yarns on the inter-laminar shear strength as well as the multi-loading behavior. The presence of z-yarns was found to affect not only the inter-laminar shear strength of the composite but also the behavior of the composite beyond the elast...

Shock tolerance is desirable for ceramic particles-reinforced metal matrix composites in many applications, where the dislocation dynamics evolution under extreme load key but still elusive. Herein, we have investigated motion and interaction shock loading of SiC/Al nanocomposites using molecular simulations. We demonstrated that plastic deformation occurs at an impact velocity (0.5 km/s) lower...

This paper reports the latest development of several techniques for adaptive flight envelope estimation and protection system for aircraft under damage upset conditions. Through the integration of advanced fault detection algorithms, real-time system identification of the damage/faulted aircraft and flight envelop estimation, real-time decision support can be executed autonomously for improving...

The relationship between the initial (Pi) and final (Pf) population densities of Meloidogyne javanica in response to increasing initial inoculum levels and the effect on yield in zucchini cv. Amalthee (Cucurbita pepo L.) was determined using a geometric series of 12 Pi from 0 to 51,200 eggs/100 cm of soil in pot experiments in a greenhouse. The maximum multiplication rate was 425, and the equil...

raditional radiation therapy (RT) typically delivers radiation to a wide target field within the body resulting in the treatment of both the tumor and a significant volume of surrounding healthy tissue. This technology is ideal for tumors that invade the surrounding tissue and when tumor margins are not well defined. In an effort to protect the healthy tissue, traditional RT is delivered in sma...

Computers today are not only the calculation tools they are directly (inter)acting in the physical world which itself may be conceived of as the universal computer (Zuse, Fredkin, Wolfram, Chaitin, Lloyd). In expanding its domains from abstract logical symbol manipulation to physical embedded and networked devices, computing goes beyond Church-Turing limit (Copeland, Siegelman, Burgin, Schachte...