Process capabihty

Manufacture of ion-exchange resins has traditionaHy been a batch process. Significant progress was made more recentiy in the development of a continuous process for the manufacture of copolymer beads. However, as of this writing (ca 1994) is it not used by aH manufacturers. Moreover, those companies having continuous processing capabiHties do not use it for aH ion-exchange products. 

Fig. 1. Vacuum deposition system having a plasma processing capabiHty, where the dashed lines represent optional additions to a system.

Examine the processing equipment to determine what processing capabihties are possible, and write phases to accomplish each possible processing c abihly. 

Now, the fact that a process is under control only means that it is operating in a consistent way, and not necessarily that it will satisfy the specifications. It is also necessary to compare the behavior of the process, that is, its control parameters, with the specification limits. Only thus will we have a measure of process capabihty. 

Histogram 2.2. Check Sheet 1857 1858 4.2. Other Charts 4.3. Process Capabihty Analysis 1868 1869... 

In modern human-machine systems, task assignments may be adaptive or blended rather than strictly allocated. The information-processing capabihties of modern machines often include some form of task knowledge and reasoning capabihties that provide for an adaptive task allocation that shifts the task demands on the basis of contextual variables. Also, in many cases, human performance is augmented by (blended with) machine performance to accomphsh a given task. 

In order to describe rubber compounds from the point of view of their processing capabihty different methods are used [29]. In this respect full characterization is achieved by analyzing the flow curves of rubbers and rubber compounds. The flow curves can be obtained by different viscometers. In the rubber industry (over 100 years) a technological index has been widely used - the Mooney viscosity. It serves for a comparison and control. It is measured relatively quickly with the respective viscometer and in accordance with the International standard ISO 289-1 2002. The obtained Mooney viscosity gives information just for one point of the flow curve of the rubber or rubber compound and this is the reason that no full rheological characteristics of the elastomeric material are obtained [30]. In order to describe the processing capability of rubber compounds by means of Brabender Plasticorder, the measurements are usually performed at a relatively high... 

Process capabihty Cp is dehned as the specification width divided by the process width. The main assumption for all of this is that many physical processes have sample distributions that are described by the Gaussian or normal distribution. A second assumption is that the 3process normal distribution describe the process width. If the process width coincides with the specification limits, then the Cp = l.O. This is somewhat arbitrary but has been the standard usage for many years and continues to be accepted. If Cp = 1, the defect rate is approximately 2700 parts per million (ppm), a generally unacceptable defect rate for most products in today s competitive marketplace. If the center of the process is not coincident with the center of the specification width, the process capability is reduced and must be calcnlated by Cpic = Cp l — K) where K is the difference between the target value and the process mean divided by one-half the specification width. 

Smaller holes require higher manufacturing process capabihties and imply (due to design characteristics) finer tolerances on tooling and internal registration systems. The aspect ratio (AR) of diameter to board thickness is a major process concern. 

Machine processing capabiHties models, 79-13 Macro EMG, 25-9 Magnetocardiogram, see MCG Magnetocytometry, for cell characterization, 62-4 Magnetoencephalogram, see MEG... 

Adamatzky, A.L Information-processing capabihties of chemical reaction-diffusion systems. 1. belousov-zhabotinsky media in hydrogel matrices and on solid supports. Advanced Materials for Optics and Electronics 7(5), 263-272 (1997)... 

Man-Machine Interfaces Another important consideration in machines and equipment is the interface with users. Ergonomics or human factors engineering principles are often critical in the design of machines and equipment. There are many opportunities to improve productivity and reduce errors in operations that may result in accidents by understanding the visual, auditory, tactile, physical, and mental processing capabihties and Hmitations of people. One must also recognize that many variables in people can affect performance of machines and equipment. 

Ifkovits, J. L., R. F. Padera, and J. A. Burdick 2008. Biodegradable and radically polymerized elastomers with enhanced processing capabihties. Biomedical Materials. 3 034104. 

Process capabihty analysis (CPK) Process capability analysis helps the user to understand if the process is capable of maintaining the control(s) that have been identified. CPK is used to test the capabihty of a process after improvement actions have been implemented to ensure that... 

The gathered information on defects by node and sub-node was stratified to assess the process capabihty on six-sigma deployments. 

It is possible to demonstrate that Quality Fimetion Deployment (QFD) within a norm space permits assessment of investment plans in a Plastics Production plant, using its process capabihty (defects per million of opportuiuties, DPMQ) in the last (Quality house. 

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