Breakage resistance

Berl saddles (ceramics) are still used due to their good breakage resistance. 

Some of the first applications of SBC in medical applications were for drainage units. The units are clear to allow ease of reading fluid levels, and breakage resistant to contain fluids if the parts are dropped or impacted. Applications have expanded in other medical devices and diagnostic equipment, including yankaeurs, centrifuge tubes and medical films. Other application areas include safety needles and various respiratory care devices. 

Green, D. A., Rogers, J.M., Robertson, D.C., and Tolbert, L.F. (1995). Formation of Attrition- and Breakage-Resistant Polycrystalline Sodium Perborate Tetrahydrate Particles, In Proceedings of the 1995 Topical Conference "Recent Developments and Future Opportunities in Separations Technology, AIChE, New York. 

ADVANTAGES AND DISADVANTAGES OF THE BLEND Deep formability, rigidity, breakage resistance, chemical resistance, abrasion resistance TYPICAL BLEND PROPERTIES (see Table 1)... 

Drop breakage occurs when surrounding fluid stresses exceed the surface resistance of drops. Drops are first elongated as a result of pressure fluctuations and then spHt into small drops with a possibiUty of additional smaller fragments (Fig. 19). Two types of fluid stresses cause dispersions, viscous shear and turbulence. In considering viscous shear effects, it is assumed that the drop size is smaller than the Kohnogoroff microscale, Tj. 

Other Applications. The refractive index of siUcate or borosiUcate glass can be modified by the addition of cesium oxide, introduced as cesium nitrate or carbonate. Glass surfaces can be made resistant to corrosion or breakage by surface ion exchange with cesium compound melts or solutions. This process can also be used for the production of optical wave guides (61). 

The drop shatter test indicates the resistance of a coal or coke to breakage on impact (see D440). A sample is dropped in a standard way a number of times from a specified height. Eor the tumbler test or abrasion index (ASTM D441), the coal or coke is rotated in a dmm to determine the resistance to breakage by abrasion (18). 

The burden support and permeabiUty function of coke is enhanced by the coke degrading in size as tittle as possible as it progresses downward through the blast furnace. This means that, in addition to minimum breakage as the coke is transported from coke plant to blast furnace, the coke should be as resistant as possible to all of the blast furnace conditions that act to degrade the coke. 

Flexure testing has also been used to measure the strength of a RGP material (33). The strengths measured from flexure tests can be empirically related to a material s resistance to breakage during typical lens handling. 

The abrasive must also be sufficiently tough to resist breakage on impact. Rice is a poor substitute, since it tends to shatter on impact and small particles lodge themselves in bearings and seals. Again, the closer the injection to the deposit, the less significant the toughness. 

This is another property for which it is very difficult to obtain a reliable figure. In general, ceramic materials are not very resistant to impact and should be guarded to prevent breakage by accidental blows. 

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