Fracture consolidation test

Fracture of the bulk solid Once the consolidation pressure is applied, the cylinder containing the bulk solid would be removed in some manner without disturbing the sample (middle step shown Fig. 9), so that the strength of the bulk solid can be measured. A pressure would then be applied until the bulk solid fails or fractures. The applied pressure at which the bulk solid failed is referred to as the unconfined yield strength F) (cohesive strength). This idealized test could be repeated several... 

Consolidation. Heat treatment of POROUS GLASS and reconstructed GLASS (q.V.) to eliminate porosity. Constant Moment Test. See fracture... 

One carbon-UHMWPE composite, commonly known as Poly II (Zimmer, Inc., Warsaw, Indiana, USA), was developed commercially and used clinically. The CFR-UHMWPE was reinforced by chopped, randomly oriented carbon fibers in a direct compression molded UHMWPE matrix [4]. The carbon fiber reinforcement was initially considered to be responsible for improved wear behavior relative to UHMWPE during initial experimental testing conducted by the manufacturer [5]. However, further studies ultimately revealed that such performance came at the expense of the ductility, decreased crack resistance, and the fiber-matrix interface of the composite [6]. Subsequent wear studies also showed evidence of fiber disruption at the surface and abrasive wear of the metallic counterface [7]. Furthermore, occasional difficulties in the manufacture of the composite material resulted in incomplete consolidation of the powder and carbon fibers in certain implants [8]. Thus, after its clinical introduction, Poly II was found to exhibit wear, fracture, and extensive delamination [2, 3,9], and, as a result, the material was eventually withdrawn [ 10]. 

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