Optimization activities in manufacturing must be adressed in the multifaceted context which combines economic, social and environmental goals. Research activities of today not only strive to cope with the legislative pressure of the Directive of the European Parliament on Energy Using Products but also aim for economic advantages for the machine tool user by investigating and applying suitable procedures and methods that help to model, forecast, and reduce the overall energy consumption. A key issue is the reduction of the amount of resources consumed for the same output and the increased machine tool efficiency with the help of selective methods and a minimum investment. A bottom-up approach to identify potential initial points for optimization is given in the presented research work. This paper introduces a methodology for detecting and evaluating reasonable investments for retrofit solutions with different approaches. A technical measurement and optimization approach, depending on the actual circumstances, and an economic approach, that is used to detect optimization potentials with the economic evaluation of selected solutions.

These directional correlation coefficients, 7 -8 together with the conversion data and the cross-over intensity, suggest an angular momentum assignment of 3, 2, and 0 to the states of the Sr 88 nucleus (Fig. 3) and characterize the first (3-»-2) transition as an Sr 88 E3 2% 0+ FIG. 3. Spin and parity assignments to the levels of Sr 88 .electric dipole transition with 0.015 percent to 0.002 percent magnetic quadrupole admixture, the two radiations being in phase. The second (2->0) transition is by pure electric quadrupole radiation. These results are'in good agreement with the internal conversion data and also remove the last exception to the Goldhaber-Sunyar rule.From an accurate determination of the magnetic quadrupole admixture information can be obtained about the reduction of the electric dipole matrix element. In view of the importance of this particular mixing ratio, extensive studies are in progress to determine the Sr 88 gamma-gamma angular correlation with even higher precision.A CCORDING to Goertzel 1 and Alder 2 -3 the angular correlation of successive nuclear radiation can be disturbed by extranuclear fields. In the case of the Cd 111 7-7 cascade, ~uch a disturbing effect has been established by Aeppli et al}> h The dependence of the anisotropy A = [W(180°) -W(90°)3/W(90°) on an externally applied magnetic field allowed the determination of the magnetic moment of the first excited state of this nucleus. Furthermore the anisotropy was found to depend strongly on the source Crystal c Exp.l FIG. 1. Diagram of the c axis orientation of the In single crystal with respect to the detector directions. material, metallic sources showing values for A varying from -5 percent up to the maximum value of -20 percent whereas ionic crystal sources show nearly isotropic correlations.The question arose as to whether the source effects are due to the magnetic field of the electron shell (magnetic interaction) or to an inhomogeneous electric crystalline field (quadrupole interaction). Frauenf elder 6 has discussed the first possibility. The difference between metallic and ionic crystal sources would be explained on the assumption that after the K capture the electron shell remains excited during a time comparable with the lifetimes of the excited nuclear states in the case of the ionic crystals, whereas in the case of metallic sources the excited states would decay more rapidly. A series of experiments have been made to test this and further the possibility of the presence of an electric quadrupole interaction.If the interaction were magnetic in origin a "magnetic decoupling experiment" should be possible. If the attenuation of the anisotropy is the result of the coupling between the angular momenta / of the nucleus and / of the shell, then it is possible to obtain the "true" correlation by applying an external magnetic field H in the direction defined by the source and one of the two detectors. The coupling between / and / will be broken if the * A -.20 -.10 W(180)-WC90) WC90D 90° o° <* FIG. 2. Anisotropy vs angle a of ...

The research activities of today not only strive to cope with the legislative pressure given by the Directive of the European Parliament on Energy Using Products but also aim for economic advantages for the machine tool user by investigating and applying suitable procedures and methods that help to model, forecast, and reduce the overall energy and resource consumption. The common goal is to reduce the amount of resources consumed and increase machine tool efficiency with the help of selective methods and a minimum investment. An approach to identify the above mentioned advantages is given on the presented research work and paper. This paper introduces a methodology for detecting and defining reasonable investments for retrofit solutions and optimization strategies depending on the actual circumstances, an approach for the effective acquisition of the required data, and the strategy used to detect optimization potentials based on these findings.

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