ISO 15165:2001 pdf download

ISO 15165:2001 pdf download.Fine ceramics (advanced ceramics,advanced technical ceramics)一Classification system.
5.5.4 If more than one property characteristic is required, the code D is repeated, i.e.:
DnnnDnnnnnnDnnn .
represents three property features of particular relevance. These coding elements can be placed in any sequence without change of meaning.
EXAMPLE
A material with thermal conductivity 40 W rn-1 K, dielectric loss tangent 5 x 10 at 10 MHz and flexural strength 600 MPa, all at 400 °C:
D201 64D609444D301 54
The first two elements in this example are taken from the previous examples for single elements, and the third signifies the thermal conductivity classification.
5.5.5 Optionally, a ‘supplementary statement” may be added to the classification code in order to indicate the test method being used, a test method parameter, or other relevant attribute, e.g. colour. The supplementary statement is enclosed in parentheses (..) and immediately follows the Dnnnnnn code.
EXAMPLE
Taking the previous example and adding the test methods and the colour of the product gives:
D20164(lSO 14704, 4-point bending, 40 mm span)D609444(IEC 60672)D30154(EN 821-2 and specific heat) D403(white)
5.6 Other classification fields
While not a defined part of this International Standard, additional classification fields may be used for further features associated with a product as required by the application of the classification. If it is desired to include such information, the classification fields should be constructed as agreed tables of codes in the form:
Xnnn
where X is a unique and unambiguously identifiable initial classification field character, and nnn is a three-digit code from an agreed table. In this form, the additional classification elements remain unique and machine readable.
Examples of attributes which could be coded in this way include:
date of coding
manufacturer’s name
— country of origin
6 Construction of a complete classification code
The classification method described above may be used to assemble a code of any length to any level of detail appropriate to the end-use requirements. By using unique letter identifiers at the start of each classification element an individual element is easily identifiable in the combined code, which can then be constructed in any appropriate order of classification fields.
The complete code comprises the individual coding elements in any agreed order, and shall be written as a continuous string of characters with no gaps or punctuation.
It is the purpose of this International Standard to provide only a framework for classification rather than to prescribe exact formats of codes for specific end functions. The system is sufficiently flexible to cover many envisaged purposes by the appropriate agreed methods of selecting and ordering the coding elements. However, it is recommended that unless otherwise required, the short format chemistry code is used.
The following examples are given to illustrate the potential applications.
EXAMPLE 1 To survey markets or to compile trade statistics for tine ceramics, a tiade organization might require compilation of sales data by its members by classifying their products according to the criterion:
application + short-form chemical character
The classification code would appear as:
AnnnCXXnnnn
where XX defines the form of the product of interest, and nnnn is a short form code for a particular chemistry category. Trade returns could be demanded labelled in this way. Thus, reduced titania threadguides would be coded:
A402CKB6441
EXAMPLE 2 A research organization wishes to construct a data base based on brochures for commercially available materials. The chemical character is the principal identifier, and the available information from manufacturers on chemical character and principle property data might be converted into a machine readable code:
CXXnnnnDnnnDnnnDnnnnn
In this case the application may not be relevant, while the data elements are key items allowing differentiation between products. As many data elements as needed may be added in the data string. Alternatively, the chemical character string alone could be used to head a purpose-built detailed property data base. For example, a 95 % alumina ceramic used as an electrical insulator with the property data defined in 5.5.3 above would be coded:
CKB5040D201 62D609444
EXAMPLE 3 An organization requires a ceramic material with specific property attributes for a particular application. The chemical character is not important. The product could be characterized using the code:
AnnnDnnnDnnnnnnDnnnnDnnnn
where the data classification field is used to identify the broad property requirements. This code could be used to search a data base; e.g. a rotating shaft seal for a chemical plant pump requiring high strength (>200 MPa, room temperature implied), sliding wear resistance, acid resistance and resistance to water quench thermal shock to 300 °C could be searched for using the code.