Glasindustri och keramisk industri

Kommittébeteckning: SIS/TK 179/AG 02 (Byggnadsglas)
Källa: CEN
Svarsdatum: den 27 jul 2024
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This document gives precisions on the mounting and fixing rules for testing glass products and provides guidance. Where appropriate, it defines procedures for extended application of test results obtained in accordance with EN ISO 1716, EN ISO 11925 2, EN ISO 1182 and EN 13823 and classified according to EN 13501 1. NOTE Some glass products have been classified A1 according to Commission decision 96/603/EC. This document is not applicable to laminated glass comprising plastic glazing sheet material. This document is not applicable to joints and cables, glues, mounting seals and any fixing devices used to install the glass product.

Ämnesområden: Konstruktionskeramer
Kommittébeteckning: SIS/TK 998 (Standardiseringsarbete utan svenskt deltagande)
Källa: CEN
Svarsdatum: den 15 aug 2024
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This document specifies the conditions for the determination of hoop tensile properties of ceramic matrix composite (CMC) tubes with continuous fibre-reinforcement at ambient temperature in air atmospheric pressure. This document is specific to the tubular geometries since fibre architecture and specimen geometry factors in composite tubes are distinctly different from those in flat specimens. This document provides information on the hoop tensile properties and stress-strain response, such as hoop tensile strength, hoop tensile strain at failure and elastic constants. The information can be used for material development, control of manufacturing (quality insurance), material comparison, characterization, reliability and design data generation for tubular components. This document addresses, but is not restricted to, various suggested test piece fabrication methods. It applies primarily to ceramic and/or glass matrix composite tubes with a continuous fibrous- reinforcement: unidirectional (1D filament winding and tape lay-up), bi-directional (2D braid and weave) and tri-directional (xD, with 2 < x < 3), subjected to an internal pressure. Values expressed in this document are in accordance with the International System of Units (SI).

Ämnesområden: Råmaterial
Kommittébeteckning: SIS/TK 998 (Standardiseringsarbete utan svenskt deltagande)
Källa: CEN
Svarsdatum: den 6 sep 2024
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This document defines a method for the determination of the mass fractions of the elements Al, Ca, Cr, Cu, Fe, Mg, Ni, Ti, V and Zr in powdered and granular silicon carbide. Dependent on element, emission lines, plasma conditions and sample mass, this test method is applicable for mass fractions of the above trace contaminations from about 0,1 mg/kg to about 1 000 mg/kg, after evaluation also from 0,001 mg/kg to about 5 000 mg/kg. NOTE 1 Generally for optical emission spectrometry using inductively coupled plasma and electrothermal vaporization (ETV-ICP-OES) there is a linear working range of up to four orders of magnitude. This range can be expanded for the respective elements by variation of the sample mass or by choosing emission lines with different sensitivity. After adequate verification, this document is also applicable to further metallic elements (excepting Rb and Cs) and some non-metallic contaminations (like P and S) and other allied non-metallic powdered or granular materials like carbides, nitrides, graphite, soot, coke, coal, and some other oxidic materials (see [1], [4], [5], [6], [7], [8], [9] and [10]). NOTE 2 There is positive experience with materials like, for example, graphite, boron carbide (B4C), silicon nitride (Si3N4), boron nitride (BN) and several metal oxides as well as with the determination of P and S in some of these materials.