ISO 180-2019 pdf free.Plastics – Determination of Izod impact strength. 1.4 The method is not normally suitable for use with rigid cellular materials and sandwich structures containing cellular material. Notched specimens are also not normally used for long-fibre-reinforced composites or thermotropic liquid-crystal polymers. 1.5 The method is suited to the use of specimens which can be either moulded to the chosen dimensions, machined from the central portion of a standard multipurpose test specimen (see Iso 20753) or machined from finished or semi-finished products such as mouldings, laminates and extruded or cast sheet. 1.6 The method specifies preferred dimensions for the test specimen. Tests which are carried out on specimens of different dimensions or with different notches, or specimens which are prepared under different conditions, may produce results which are not comparable. Other factors, such as the energy capacity of the apparatus, its impact velocity and the conditioning of the specimens can also influence the results. Consequently, when comparative data are required, these factors are to be carefully controlled and recorded. 1.7 The method is not intended to be used as a source of data for design calculations. Information on the typical behaviour of a material can be obtained, however, by…

ISO 178-2019 pdf free.Plastics一Determination of flexural properties. A test specimen of rectangular cross-section, resting on two supports, is deflected by means of a loading edge acting on the specimen midway between the supports. The test specimen is deflected in this way at a constant rate at midspan until rupture occurs at the outer surface of the specimen or until a maximum strain of 5 % (see 3) is reached, whichever occurs first. During this procedure, the force applied to the specimen and the resulting deflection of the specimen at midspan are measured. This document specifies two methods: method A and method B. Method A uses a strain rate of 1 %/min throughout the test. Method B uses two different strain rates: 1 %/min for the determination of the flexural modulus and 5 %/min or 50 %/min, depending on the ductility of the material, for the determination of the remainder of the flexural stress-strain curve. NOTE 1 The strain rates mentioned above are to be interpreted as nominal ones. Nominal test speeds are calculated using Formula (4). For the machine settings the best fitting ones are selected from Table 1. NOTE 2 For materials exhibiting nonlinear stress/strain behaviour, the flexural properties…

ISO 8-2019 pdf free.In formation and documentation- Presentation and identification of periodicals. 4 Identification of periodicals — International Standard Serial Number (ISSN) Periodicals are identified worldwide via the assignment of an International Standard Serial Number and a key title. The ISSN is specified in Iso 3297 and it is an unambiguous numerical identifier that uniquely identifies a periodical title for searching, file matching, and other applications in libraries, information databases, the supply chain, rights management and other environments. It is necessary to obtain a separate ISSN for each medium version of a periodical as defined by the ISSN Manual. When the same periodical or other continuing resource is produced in different media for which different ISSN and key titles are assigned, then the ISSN of all medium versions shall appear together on each version in a prominent location, each with additional distinguishing information. The Linking ISSN (lSSN-L that collocates the medium versions shall also be displayed. An ISSN shall consist of eight digits from the code points in the range U+0030 to U+0039 corresponding to Arabic numerals 0 to 9. The last digit or check digit (extreme right, low-order position) can also use the Latin capital letter X (code point…

ISO 9803-2-2020 pdf free.Vacuum technology一Mounting dimensions of pipeline fittings一 Part 2: Knife-edge flange type. 1 Scope This document specifies mounting dimensions for vacuum pipeline fittings (elbows, tees and crosses) of knife-edge flanges for nominal bores from 16 mm to 200 mm. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3669, Vacuum technology — Dimensions ofknife-edgeflanges 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 3669 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https://www.iso.org/obp — IEC Electropedia: available at http://www.electropedia.org/ 4 Requirements 4.1 Mounting dimensions of the vacuum pipeline fittings shall be as specified in Table 1. See Figures 1 to 3. 4.2 Flange dimensions shall be as specified in ISO 3669. One or more flange should be rotatable.ISO 9803-2 pdf download.

BS ISO 21285:2019 pdf free.Soil quality – Inhibition of reproduction of the soil mite (Hypoaspis aculeifer) by soil contaminants. Approximately 0,3 % to 1,0 % calcium carbonate (CaCO3, pulverised, analytical grade) are necessary to get a pH of 6,0 ± 0,5. NOTE 1 Taking the properties of highly non-polar (log I(> 2) or ionizing substances into account, 5 % of peat have proven to be sufficient for maintaining the desired structure of the artificial soil. NOTE 2 It has been demonstrated that Hypoaspis aculeifer can comply with the validity criteria even on reproduction when tested In fIeld soils with lower organic carbon content (e.g. 2,7 %), and there is experience that this can be achieved In artificial soil with 5 % peat. Therefore, it is not necessary before using such a soil in a definitive test to demonstrate the suitability of the artificial soil for allowing the test to comply with the validity criteria unless the peat contents lowered more than specified above. Prepare the artificial soil at least three days prior to start the test, by mixing the dry constituents listed above thoroughly in a large-scale laboratory mixer. A portion of the deionized water required is added while mixing…

ISO 945-1-2019 pdf free.Microstructure of cast irons – Part 1: Graphite classification by visual analysis. This document specifies a method of classifying the microstructure of graphite in cast irons by comparative visual analysis. The purpose of this document is to provide information about the method of graphite classification. It is not intended to give information on the suitability of cast-iron types and grades for any particular application. The particular material grades are specified mainly by mechanical properties and, In the case of austenitic and abrasion resistant cast irons, by their chemical composition. The interpretation of graphite form and size does not allow a statistically valid statement on the fulfilment of the requirements specified in the relevant material standard. 2 Normative references There are no normative references in this document. 3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https:/Jwww.iso.org/obp — TEC Electroped Ia: available at http://www.electropedia.org/ 4 General 4.1 Designation system for classifying graphite in cast irons When cast iron materials are examined under a microscope in accordance with this document, the graphite shall be…

ISO 5178-2019 pdf free.Destructive tests on welds in metallic materials – Longitudinal tensile test on weld metal in fusion welded joints. Each test piece shall be marked in order to identify its exact location in the manufactured product or in the joint from which it has been removed. Each test specimen shall be marked in order to identify its exact location in the test piece from which it has been taken. When removed from the test piece, each test specimen shall be marked. 6.3 Heat treatment and/or ageing No heat treatment shall be applied to the welded joint or to the test specimen unless it is specified or permitted by the relevant application standard dealing with the welded joint to be tested. Details of any heat treatment shall be recorded in the test report. If natural ageing of aluminium alloys takes place, the time between welding and testing shall be recorded. NOTE The presence or hydrogen in ferrous weld metals can adversely affect the test results and suitable hydrogen release treatment. 6.4 Extraction 6.4.1 General The mechanical or thermal processes used to extract the test specimen shall not change the properties of the test specimen in any way. 6.4.2 Steel…

BS ISO 20078-3:2019 pdf free.Road vehicles – Extended vehicle (ExVe] web services Part 3: Security. This document defines how to authenticate users and Accessing Parties on a web services interface. It also defines how a Resource Owner can delegate Access to its Resources to an Accessing Party. Within this context, this document also defines the necessary roles and required separation of duties between these in order to fulfil requirements stated on security, data privacy and data protection. All conditions and dependencies of the roles are defined towards a reference implementation using OAuth 2.0 compatible framework and OpeniD Connect 1.0 compatible framework. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 20078-1 Road vehicles — Extended vehicle (ExVe) ‘web services’ — Content 3 Terms, definitions and abbreviations For the purposes of this document, the terms, definitions and abbreviations given in ISO 20078-1 and following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:…

BS ISO 6721-6:2019 pdf free.Plastics一Determination of dynamic mechanical properties Part 6: Shear vibration一Non-resonance method. Various shear test specimen assemblies can be used. A suitable design is shown in Figure 2. Here the metal end-pieces P are cylindrical, but any cross-sectional shape is suitable as long as the end-pieces can be clamped rigidly in the shear load stage. The dimensions of the end-pieces and the polymer specimens S shall be chosen such that the deformation of the end-pieces under an applied load is negligible in comparison with that of the specimens. For a polymer whose shear modulus is less than 100 MPa, this will mean that the thickness of the end-pieces may be comparable with the thickness L of the specimens. The cross-sectional shape of the polymer specimens in the plane of their bonded faces is not critical, although a rectangular section is recommended in order to simplify the application of a term representing the contribution to the specimen deformation from bending. See Formula (1). The specimens are typically cut from a sheet of the polymer and bonded to the end-pieces to construct the shear test-specimen assembly. The dimensions of each polymer specimen shall not vary by more than 3 %…

BS EN ISO 15091:2020 pdf free.Paints and varnishes – Determination of electrical conductivity and resistance. This document specifies a method for determining the electrical conductivity and the electrical resistance of coating materials. The conductivity is usually measured for water-borne paints and varnishes, including electrodeposition coating materials, and the resistance Is usually measured for solvent-borne paints and varnishes. If required. the resistivity of the coating material is calculated from either of these measurements. The method is applicable to products having a conductivity less than 5 uS/cm, corresponding to a resistivity greater than 200 kflcm. The conductivity of coating materials influences their processihility in the presence of an electric field. This is particularly important for electrodeposition paints and coating materials which are processed electrostatically. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISQ1513, Paints and varnishes — Examination and preparation of test samples ISO 3696. Water for analytical laboratory use — Specification and test methods [50 461 Paints and varnishes…