Materials and process variables

Let it be known that one can say the tests are essential and all provide useful functions. However like design, material and process variables that exist, there are also testing variables. In order to apply them to a design, the designer should understand their meanings and purpose for existing. The result will be the proper use of tests. 

Toughness maps for short fiber composites can also be established in a similar manner, but no such maps have been reported. The difficulty stems from the large number of material and process variables that are used to fabricate these... 

The parameters which affect the spread of both capacitance and parallel resistance values are material and process variability, temperature gradient in the module, aging state, etc. 

The process of solid flow is extremely complex and dependent on many material and process variables. The answer to the question of which is the best method to use is therefore dependent on your process and what you are trying to predict or measure and select the method or combination of methods that best meets your needs. 

Nokhodchi, A. and Rubinstein, M.H. (2001) An overview of the effects of material and process variables on the compaction and compression properties of hydroxypropylmethyl cellulose and ethylceUulose. STP Pharm Sci, 11, 195-202. 

Important material and process variables for reactive extrusion have been summarized by Janssen (1998) and are... 

Important material and process variables for UV processing include... 

Mathematical simulation of heat, mass, or momentum transfer in agitated vessels is often untenable, due to the three-dimensional components of the material and energy balances, and the large number of material and process variables. In such cases, dimensional analyses are the preferred method of correlation. Numerous references are available for a review of dimensional analysis in engineering applications [30-32],... 

A series of standard pavement evaluation tests have been performed on a large number of mixtures comprised of different percent-by-weight ratios of sand, asphalt, and sulfur. The testing program performed in this task was designed to evaluate qualitatively the influence of both material and process variables on engineering properties. The following represent some of the conclusion reached ... 

A core process encompasses the operations of a casting plant In this paper some of the specific and unique material and process variables of the dehydrated silicate process are reported These are ... 

The properties of sodium silicate, silicate coated sand, and of dehydrated silicate bound sand bodies have been examined in terms relevant to a foundry core process. The material and process variables of particular significance to manufacturing conditions are as follows ... 

According to the foregoing discussion, a large number of raw material and process variables must be considered when developing NPK production formulations that result in good granulation characteristics. As with the operation of an NPK granulation plant, formulation too, requires a considerable amount of skill and an element of art to ensure that the particular formulation will yield the desired results in a specific situation. 

Scheme 4.1 The basic materials and process variables involved in electrospinning of polymer nanofibers. Electrospinning schematic reproduced here with pennission from Hsu and Shivkumar (2004b). Copyright 2004. Springer Science and Business...

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