In this study, the pitting type of corrosion growth characteristics, fatigue crack initiation and propagation behavior; axial fatigue tests were carried out on precipitation hardened martensitic Custom 450 steel in the air and 3.5wt% NaCl solution. Using the ratio of the depth to the half-width of the pits; (a/c)= 1.5±0.2 the corrosion pit depth growth law was obtained as a function of stress a...

The ultrasonic velocity, density and viscosity of some Schiff bases of 4-amino benzoic acid  were measured in 1,4-dioxane and dimethylformamide at 308.15 K. Various acoustical properties such as isentropic compressibility (ks), Rao’s molar sound function (Rm), the Van der Waals constant (b), molar compressibility (W), inter molecular free len...

Here we introduce the idea of using rational expectations, a core concept in economics and finance, as tool to predict optimal failure time for wide class weighted k-out-of-n reliability systems. We illustrate by applying it systems that have components with heterogeneous times. Depending on distributions component failure, find different measures be predicting total system. give examples how, ...

In a proof of partial knowledge, introduced by Cramer, Damgard and Schoenmakers (CRYPTO 1994), prover knowing witnesses for some k-subset n given public statements can convince the verifier this claim without revealing which k-subset. Their solution combines \(\varSigma \)-protocol theory linear secret sharing, achieves communication complexity general k, n. Especially “one-out-of-n” case \(k=1...

Joint Reliability Importance (JRI) is a measurement of the degree of interactions between two components in a system. The value of JRI is non-positive (non-negative) if and only if one component becomes more important when the other has failed (is functioning). In this paper, we study the properties of JRI of the k-out-of-n system, where the system works if there are at least k functioning comp...

Rigorous analysis of the determinants of volumetric mass transfer coefficient (kLa) and its accurate forecasting are of vital importance for effectively designing and operating stirred reactors. Majority of the available literature is limited to systems with low solids concentration, while there has always been a need to investigate the gas-liquid hydrodynamics in tanks handling ...