This article addresses diagnosis and prognosis of evolving fatigue crack damage in polycrystalline alloy structures. It presents a statistically inspired recursive method for in situ estimation of the remaining useful life in machinery components, based on real-time measurements. The underlying algorithm is built upon (a) symbolic dynamic filtering of (online) ultrasonic sensor data and (b) Kar...

In this study, thermal stress analysis on discs consisting of two different materials was analyzed analytically. Disc were selected SiC/6061 Al Alloy composite and Al-7075 respectively. Assuming that the elasticity module does not change with temperature, performed under constant temperature distributions in area from inner surface disc to outer surface. Thermal distribution. A computer program...

This study investigates the mechanical properties and wear behavior of Al 7075/Al2O3/SiCNP composites. The hybrid composites are manufactured using stir casting technique. In this work, 7075 alloy is reinforced with five different weight fractions Al2O3 a constant SiCNp, an average particle size 50 nm. aluminum metal matrix examined through surface morphology X-ray diffraction (XRD) patterns to...

Thermal spray coatings are widely used in many applications, and the adhesion effect at coating/substrate interface plays an important role during service life. The thermal spraying coating substrate is primarily combined by a mechanical seizure effect. In this work, strategy to generate interfacial metallurgical bonding proposed. Plasma with wire feeding was adopted increase size of sprayed pa...