The effect of casting pores on the very high cycle fatigue (VHCF) behavior of a directionally solidified (DS) Ni-base superalloy DZ4 is investigated. Casting and hot isostatic pressing (HIP) specimens were subjected to very high cycle fatigue loading in an ambient atmosphere. The results demonstrated that the continuously descending S-N curves were exhibited for both the casting and HIP specime...

The article presents pr ocess application of the rapi d prototyping (RP) for manufacturing of blades of aircraft turbine in monocrystallization and also directional crystallization of casting process. It is describing the method of modelling of the chosen elements of casting model kit with the usage of RP and RT system s. The article presents the analysis of additive rapid prototyping methods (...

Resumen: Este art culo contine una breve descripcii on de los principales compo-nentes software del Multilingual Central Repository de Meaning y su contenido inicial. Abstract: This paper provides a brief description of the main software components of the Multilingual Central Repository of Meaning and their initial content.

Department of Chemistry, University of Pav E-mail: [email protected] Dipartimento di Chimica dell'Università de Golgi 19, 20133 Milano, Italy Istituto di Scienze e Tecnologie Molecolari – CNR), Università degli Studi di Milano, U Milano, Italy INSTM Research Unit, University of Pavia, † Electronic supplementary information ( absorption and emission spectra, and com mass spectra of newly syn...

A hierarchical decomposition of a simple polygon is introduced. The hierarchy has depth O(log n), linear size, and its regions have at most three neighbors. Using this hierarchy, circular ray shooting queries in a simple polygon can be answered in O(log n) query time and O(n log n) space. If the radius of the circle is xed, the query time can be improved to O(log n) and the space to O(n).

This work provides approaches to designing and fabricating soft fluidic elastomer robots. That is, three viable actuator morphologies composed entirely from soft silicone rubber are explored, and these morphologies are differentiated by their internal channel structure, namely, ribbed, cylindrical, and pleated. Additionally, three distinct casting-based fabrication processes are explored: lamin...

The seed oil of Teucrium depressum Small yields two unusual trienoid compo n en t s, all-cis-5,9 ,12-octadecatrienoic acid (6.7%) and trans-5,cis-9,cis-12-octadecatrienoic acid (2.0%). A third unusual component, identified as cis-5.cis-9-octadecadienoic acid, also occurs U; this oil as a trace constituent.

There is a growing recognition that part-whole hierarchies are a very general form of representation, widely used by humans in commonsense reasoning. This paper develops a terminological logic, and related inference mechanisms for representing and reasoning about composite concepts and individuals. A basic terminological logic language is extended with constructs for describing composite concep...

BACKGROUND Conventional investing and casting techniques are time-consuming and usually requires 2-4 h for completion. Accelerated nonstandard, casting techniques have been reported to achieve similar quality results in significantly less time, namely, in 30-40 min. During casting, it is essential to achieve compensation for the shrinkage of solidifying alloy by investment expansion. The metal ...