Computer-aided design materials

Metallurgy chemistry engineering computer science computer-aided design material science mathematics. 

Although adequate materials and devices are essential, successful manufacturing will require other capabilities as well. First, the process must have high yield, which implies low variability, and provide robust stability to environmental factors. To produce the envisioned products, there must be readily available electronic design tools that can adequately simulate both device and circuit performance. Although some of these computer-aided design tools are available from microelectronics technology, others must either be modified, because of the differences in the thin-hlm devices, or created anew because the devices have no equivalent (nanowires and nanotubes). 

In this work, we have demonstrated that modern QSPR modeling methods are becoming an important tool for computer-aided designs of new metal binders. Further developments depend not only on new data-mining techniques and descriptors applied, but also on the quality of the experimental data used for the training and validation of the models. Thus, both theoretical and experimental chemists should make an effort to build a basis for predictive structure-property modeling that will accelerate the development of target molecules and materials. 

S. G. Advani, Computer Aided Design in Composite Material Technology III, Computational Mechanics Publ., Southampton, MA, 1992. 

Alexander Pechenik, Rajiv Kalia, and Priya Vashishta, Computer-Aided Design of High-Temperature Materials, Oxford University Press, Oxford, UK, 1999. 

Solid Freeform Fabrication (SFF) technologies have in common the capability to build objects with comphcated 3D geometries, directly from Computer-Aided Design (CAD) files, without the necessity of tooling. SFF technologies also have in common the employment of an additive building process, in which a 3D object is built up by the repeated addition of layers of material. This is in contrast to more standard technologies which are characterized by the implementation of a subtractive fabrication process, e.g., CNC (Computer Numerical Control), where the 3D object is manufactured by calculated removal of material from a block of raw material. 

Digital Material is a new and special type of Composite Material, produced during the printing process by the selective deposition of different UV curable materials, from different inkjet nozzles, and according to a predefined Composite Material phase structure. This phase structure is design by Computer-Aided Design (CAD) software. 

NOTE OF CAUTION ALL THE ORIGINAL STUDY CASES PREDATE THE WIDESPREAD USE OF COMPUTER-AIDED DESIGN PROGRAMS. ALTHOUGH THE AUTHOR EXPECTED TO SEE A DRAMATIC REDUCTION IN ENGINEERING HOURS, THAT DID NOT MATERIALIZE FOR SEVERAL YEARS. HOWEVER, IN THE LAST YEAR OR SO,... 

N. Bodor and M.-J. Huang, Computer-aided design of new drugs based on retromet-abolic concepts, Computer-Aided Molecular Design. Applications in Agrochemicals, Materials, and Pharmaceuticals (C. H. Reynolds, M. K. Holloway, and H. K. Cox, eds.), American Chemical Society, Washington, DC, 1994, p. 98. 

Examples of the optimal inhomogeneity functions obtained by computer-aided design method are shown below. Fig. 4 shows an example of the optimal concentration functions for Bi-Te alloys. Fig. 5 - for Pb-Te alloys. Fig. 6 - for Si-Ge alloys. One of the dependencies can be obtained within 10-15 minutes of work of even not very high speed computer of the type IBM-486, which proves the efficiency of the developed program. Naturally, each specific case of FGM use requires individual function of material inhomogeneity, otherwise the use of FGM will be inefficient. 

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