Requirements engineering for technical systems involves an intricate interplay of conceptual synthesis of alternative requirements and design configurations, preliminary impact analysis of these alternatives using complex simulations and multimedia visualizations, and human decision-making based on goal trade-offs. Requirements traceability in such settings must be both productand process-orien...

Atmospheric pressure non equilibrium plasma treatments have been implemented to produce solvent-free Poly-L-lactic acid (PLLA) scaffolds, to improve biocompatibility of PLLA mats and to increase electrolyte uptake of Poly(vinylidene fluoride) (PVDF) separators for lithium batteries. It has been observed that plasma treatments are a suitable way to improve polymeric solution electrospinnability,...

Calcium phosphate (single-phase HA, single-phase TCP, and biphasic HA-TCP) nanowhiskers were synthesized using a novel microwave-assisted “combustion synthesis (auto ignition) /molten salt synthesis” hybrid route. This work is an example of our “Synergistic Processing” philosophy combining the aforementioned three technologies while utilizing their useful aspects. An important part of this work...

Traditional software process environment stores documents using either centralized or distributed approach. With the assistance of web agent, this paper presents a new document storage structure that combines the two approaches. In this new approach, all the documents are stored centrally in web server. When a developer modifies a document (data), agent detects those developers who currently ne...

Being an additive manufacturing process with a bottom-up approach, electrodeposition principle has opened up new avenues for the multiscale metallic deposition and because of its attainment high precision dimensional accuracy, it equally received attention researchers as well various industrial sectors. Considering utility this inexpensive process, present review paper deals firstly fundamental...

a new dynamic friction model for modeling of elliptical vibration assisted turning (evat) was developed in this research. the periodic change of the friction force direction is known to be one of the most important causes of this phenomenon. in modeling of machining processes (including the evat process), static coulomb friction model was employed by most of the researchers. because of the peri...

ultrasonic vibration assisted single point incremental forming (uvaspif) process is an attractive and adaptive method in which a sheet metal is gradually and locally formed by a vibrating hemispherical-head tool. the ultrasonic excitation of forming tool reduces the average of vertical component of forming force and spring-back rate of the formed sample. the spring-back phenomenon is one of the...

Problems found in the current Systems Engineering with focus in the Requirements Engineering Process shown that it could be improved using ontologies for aiding in the process. Requirements engineering in the Systems Engineering process is enhanced and quality of requirements enriched as well, improving Systems Engineering capabilities clearly can result in better Project Performance. One of th...

Deep drawing is an important process used for producing cups from sheet metal in large quantities. The process parameters and viscosity of fluid is maintained the major role in the hydro forming-deep drawing process. Hydraulic pressure can enhance the capabilities of the basic deep drawing process for making metal cups. Hydraulic pressure contributes positively in several ways to the deep drawi...