Sizing methodology

Rupture discs are typically manufactured to order, where each order represents a lot. The ASME Code defines three mediods of acceptance testing for rupture discs. The most common method requires dial at least two discs from the lot be burst tested at the specified disc temperature. The results of these tests must fall within the rupture tolerance. Table 12-5 shows the changes between the old requirements and the new sizing methodology and certification process. 

The sample size methodology above depends upon the assumption of proportional hazards and is based around the logrank test as the method of analysis. If this assumption is not appropriate and we do not expect proportional hazards then the accelerated failure time model may provide an alternative framework for the... 

Modeling of Chemical Kinetics and Reactor Design Rupture Disc Sizing Methodologies... 

Desu MM, Raghavarao D (1990) Sample Size Methodology. Academic Press, Boston. 

This section defines the criteria that will be used in the bond graph sizing methodology based on model inversion. Then bicausality is presented as a tool for determining the inverse model directly from a bond graph representation. As seen in Procedure 4, bicausality also enables the essential orders to be determined. 

The different phases of the sizing methodology are now presented. They are chronologically organized according to Fig. 6.1. For each phase care is taken to clearly present the objective, the inputs, and the unknowns of the posed problem. Steps of the methodology are then listed and the example (the same for all the phases) of an... 

Watrin N, Bouquain D, Blunier B, Miraoui A (2011) Energy-souree-sizing methodology for hybrid fuel cellvehicles based on statistical description of driving cycles. In Vehicle powta-and propulsion conference (VPPC), pp 1-5... 

Fig. 2. Methodology for the selection of tool material, grade, shape, size, and geometry, and cutting conditions for a given appHcation (8).

A variety of methodologies have been implemented for the reaction field. The basic equation for the dielectric continuum model is the Poisson-Laplace equation, by which the electrostatic field in a cavity with an arbitrary shape and size is calculated, although some methods do not satisfy the equation. Because the solute s electronic strucmre and the reaction field depend on each other, a nonlinear equation (modified Schrddinger equation) has to be solved in an iterative manner. In practice this is achieved by modifying the electronic Hamiltonian or Fock operator, which is defined through the shape and size of the cavity and the description of the solute s electronic distribution. If one takes a dipole moment approximation for the solute s electronic distribution and a spherical cavity (Onsager s reaction field), the interaction can be derived rather easily and an analytical expression of theFock operator is obtained. However, such an expression is not feasible for an arbitrary electronic distribution in an arbitrary cavity fitted to the molecular shape. In this case the Fock operator is very complicated and has to be prepared by a numerical procedure. 

Jakobsen, M. M. 1993 A Methodology for Product Development in Small and Medium Sized Companies. In Proceedings ICED 93, The Hague, 17-19 August, 706-709. 

Design methodology consists of determining capacity, approximate sizes of particles settled and horsepower requirements for pumping. The flowrate of a... 

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