Papers by Keyword: Bonding Matrix

Abstract: – The usage of steel in offshore deep water area contributes to the massive load of the offshore platform which will lead to the massive operational cost. Therefore, the reduction of weight of platform is the major issue that need to be tackled properly. The great improvement in strength to weight ratio compare to steel and high resistivity to corrosion makes Glass Fibre Reinforced Polymer (GFRP) grating preferable. GFRP gratings are normally made of two types of processes which are moulded and pultruded and it is usually consists of glass fibre and bonding matrixes of vinyl ester (VE), polyester (PE), or phenolic (PHE). However there is still doubt on GFRP grating application for offshore due to no consensus guidelines for the design of GFRP grating and there are many several types of GFRP grating available to be chosen. This paper presenting the study on two types of GFRP grating strength with variation of bonding matrixes under flexural static load. A total of six specimens of GFRP grating which consist of 1 each of molded vinyl ester, molded polyester, molded phenolic, pultruded vinyl ester, pultruded polyester and pultruded phenolic were tested to failure in flexure. The main parameters concerns in this study are 1) max load vs. mid-span deflection and 2) failure mode of the specimens.

Abstract: This work deals with the use of Fe-Cu alloys for use as matrix for diamonds in cutting tools. In this case it was processed diamond beads for diamond wires - used in the slabbing of dimension stones. Normally, diamond beads are PM processed. The beads of the present work were manufactured using Fe-Cu alloy with addition of 1wt% of SiC as the matrix metallic bond. It was carried out shrinkage/swelling and microstructural analyses, Brinell hardness measurements, as well as the abrasion resistance of beads produced here in confront with commercial ones. The results indicate that it was processed beads with similar abrasion resistance and performance than those of the commercial diamond beads.

Abstract: This work aims at the study of the behavior of the powder systems Fe-Cu e Fe- Cu-Diamond under compaction, using the stoichiometries Fe-20Cu (wt%) e Fe-20Cu-4 Diamond (wt%). It was applied pressures at the interval 100 to 600 MPa, and it was used the Balshin and Rong-De’s equations to establish the exact behavior of the systems under pressing: accommodation, plastic deformation and particle’s rearrangement.