Normy

Obsah

ČSN EN 18050 This document specifies to the producers of e-liquid the information that should be provided on the outside packaging, unit packets, product information leaflet or online content that is supplied with a vaping product. The scope of this document is limited to vaping products, cartridges, prefilled containers, and accessories.

Obsah

ČSN EN 15416-3 This document specifies a method for determining the creep deformation of bonded specimens loaded in bending shear. It is applicable to adhesives used in load bearing timber structures. It is applicable for assessing the compliance of adhesives to EN 15425 and EN 16254. This test is intended primarily to obtain performance data for the classification of adhesives for load bearing timber structures according to their suitability for use in defined climatic environments. This method is not intended to provide data for structural design and does not necessarily represent the performance of the bonded member in service.

Obsah

ČSN EN 15416-5 This document specifies a laboratory method of determining the minimum pressing time for glue line thicknesses close contact, 0,2 mm, 0,3 mm and 0,5 mm, at three temperatures and three wood moisture contents. This document is intended to determine the minimum pressing time using a specified procedure for obtaining a reliable base for comparison of minimum pressing time between adhesives under referenced conditions. The method gives a result that cannot be applied to the safe manufacture of timber structures without taking into account the influence in variation of factors such as timber density, wood moisture content, factory temperature and relative air humidity.

Obsah

ČSN EN ISO 11909 This document provides general test methods for polyisocyanate resins and solutions of polyisocyanate resins intended for use as binders in paints, varnishes and related products.

Obsah

ČSN EN ISO 17892-8 (72 1007) Tento dokument specifikuje metodu pro nekonsolidované neodvodněné triaxiální zkoušky. Tento dokument je použitelný pro laboratorní stanovení neodvodněné triaxiální smykové pevnosti při zatížení tlakem v rámci geotechnických průzkumů. Válcovitý vzorek, který může obsahovat neporušenou, znovu zhutněnou, prohnětenou nebo rekonstituovanou zeminu, je vystaven izotropnímu namáhání za neodvodněných podmínek a poté je za neodvodněných podmínek smýkán. Zkouška umožňuje stanovení smykové pevnosti a vztahů mezi napětím a přetvořením pro totální napětí. Nestandardní postupy, jako jsou zkoušky s měřením pórového tlaku nebo zkoušky s filtračními drény, nejsou součástí tohoto dokumentu. POZNÁMKA - Tento dokument splňuje požadavky na nekonsolidované neodvodněné triaxiální zkoušky pro geotechnický průzkum a zkoušení v souladu s EN 1997-1 a EN 1997-2.

Obsah

ČSN EN ISO 17138 This document specifies a test method for the determination of the flexural strength of ceramic matrix composite materials with continuous fibre reinforcement, under three-point or four-point bend at room temperature. This document is applicable to all ceramic matrix composites with a continuous fibre reinforcement, unidirectional (1D), bidirectional (2D), and tridirectional xD with (2 < x

Obsah

ČSN EN ISO 17162 This International Standard specifies a method for the determination of nominal compressive strength of advanced monolithic technical ceramic materials at room temperature.

Obsah

ČSN EN ISO 14627 This International Standard describes a test method that covers the determination of fracture resistance of silicon nitride bearing balls at room temperature by the indentation fracture (IF) method, as specified in ISO 26602. This International Standard is intended for use with monolithic silicon nitride ceramics for bearing balls. It does not include other ceramic materials. This International Standard is for material comparison and quality assurance. Indentation fracture resistance, KI, IFR as defined in this International Standard is not to be equated to fracture toughness determined using other test methods such as KIsc and KIpb.

Obsah

ČSN EN 15365 This document specifies the conditions for the determination of the tensile creep deformation and failure behaviour of single filaments of ceramic fibres at high temperature and under test conditions that prevent changes to the material as a result of chemical reaction with the test environment. This document is applicable to continuous ceramic filaments taken from tows, yarns, braids and knittings, which have strains to fracture less than or equal to 5 %.

Obsah

ČSN EN ISO 19630 This document specifies the conditions for determination of the tensile properties of single filaments of ceramic fibre such as the tensile strength, Young modulus and fracture strain. This document applies to continuous ceramic filaments taken from tows, yarns, braids and knittings, which have strain to fracture less than or equal to 5 %. This document does not apply to carbon fibres that exhibit a nonlinear stress-strain curve. This document does not apply to checking the homogeneity of strength properties of fibres, or to assessing the effects of volume under stress. Methods of estimation of strength statistical parameters are indicated.