Fringing problem

Each individual in the organisation is faced with informal or fringe problems not directly associated with the main thrust of his job, but problems that are inevitably part of the job. It is part of the manager s responsibility to ensure that each part of the organisation he sets up is capable of meeting the demands put on it in its efforts to achieve the company s operational goals. 

Basically, in the vicinity of a sharp comer all fringes converge toward the apex. Having a high density of lines at this point indicates the presence of high stress level. At a rounded corner there will be considerably less concentration. Besides the molding problems, sharp corners often cause premature failure because of the stress concentration. To avoid these problems, inside comer radii should be equal to one-half the nominal wall... 

A conscious effort has been made throughout this compilation to exclude all fringe information not directly relevant to the involvement of chemical reactivity in the various incidents o observations, with just enough detail present to allow the reader to judge the relevance or otherwise of the quoted reference(s) to his or her particular reactivity problems or interests. 

Another problem is due to fringing fields. To reduce these defocusing effects at the entrance and exit of the field, the pole pieces of the yoke of the electromagnet generally have specially shaped edges (Fig. 4.20). 

Newcomers to the field often assume that a simple Fotrrier analysis will suffice to ptrll out the periodicities automatically. However, the problem is not at all simple, as has been shown by Hudson, Tarmer and Blrmt. There are two problems. One is that the interference fringes are quite weak, and relatively few are observed. The... 

The above example demonstrates the inadequacies inherent in present cement and admixture specifications when cement compositions chemically on the fringe of normal requirements are combined with high doses of chemical admixtures. Minimum as well as the present maximum limits on cement compound composition in ASTM C 150 might best address this problem, but a requirement in ASTM C 494 that admixture compliance be established for the job cement when it is not a Type I or Type II cement might also be useful [138]. 

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