Semi-Automatic Processing Methods

In general, SMC moulds less well than DMC on intricate shapes but it is particularly suitable for large shell-like mouldings - automotive parts such as 

Other types of compression moulding and stamp forming used for continuous fibre reinforced composites are illustrated in Fig. 4.73. 

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The RFS method makes use of the fact that carbon disc electrodes used in RDE spectrometers are porous and can be used as a filter to trap particles in oil samples. Early versions of the RFS fixture used standard disc electrodes with some success and acceptable sensitivity [5]. However, standard disc electrode geometry caused the process to be slow, and lack of manufacturing control of disc porosity resulted in poor repeatability. Due to its ease of use and inherent advantages, the RFS concept was recently revisited with the intent of further improving performance. The updated RFS technique uses custom ring-shaped graphite electrodes and a semi-automatic process to improve sensitivity and repeatability and to reduce sample preparation time. 

The time required to cure the materials is dependent entirely on the method of molding, mold temperature, and material temperature when introduced into the mold cavity. There are now four basic methods of molding thermoset molding compounds (1) Compression, (2) Transfer, (3) Injection, and (4) Extrusion—with the method most commonly used as rated. Very small quantities are processed by extrusion. All methods of molding may be done automatically or semi-automatically. In most cases, the injection method is practically all done automatically. 

Normally only procedures for the cleaning of surfaces of the equipment that come into contact with the product need to be validated. Consideration should be given to non-contact parts of the equipment into which product or any process material may migrate. Critical areas should be identified (independently from method of cleaning), particularly in large systems employing semi-automatic or frilly automatic clean-in-place systems. 

During the past decade, numerous attempts have been made to develop computerized methods that process, analyze, and display multidimensional medical images in radiology. A typical example is the three-dimensional (3D) visualization of semi-automatically segmented organs (e.g. segmentation of the liver, endoluminal visualization of the colon... 

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