BS EN ISO 4892-1:2001
$142.49
Plastics. Methods of exposure to laboratory light sources – General guidance
| Published By | Publication Date | Number of Pages |
| BSI | 2001 | 24 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | National foreword |
| 4 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 1.1 This part of ISO 4892 provides information and general guidance relevant to the selection and… 1.2 This part of ISO 4892 also provides information on the interpretation of data from accelerate… 2 Normative references 3 Terms and definitions control |
| 10 | file specimen reference material reference specimen 4 Principle 4.1 Significance |
| 11 | 4.2 Use of accelerated tests with laboratory light sources 5 Requirements for laboratory exposure devices 5.1 Light source |
| 12 | Spectral global irradiance |
| 13 | 5.2 Temperature |
| 14 | 5.3 Humidity and wetting 5.4 Other apparatus requirements |
| 15 | 6 Test specimens 6.1 Form, shape and preparation |
| 16 | 6.2 Number of test specimens 6.3 Storage and conditioning 7 Test conditions and procedure 7.1 The conditions and procedures for the exposure test depend upon the particular method selecte… 7.2 Follow the procedures described in ISO 4582 for measuring properties of test specimens before… |
| 17 | 8 Precision and bias 8.1 Precision 8.2 Bias 9 Test report 9.1 Specimen description |
| 18 | 9.2 Description of exposure test conducted in accordance with part 2, 3 or 4 of ISO 4892, including: 9.3 Test results. 9.4 The date of the test. |
| 19 | (informative) Factors that decrease the degree of correlation between accelerated tests using lab… (informative) Factors that decrease the degree of correlation between accelerated tests using lab… Differences between the spectral distribution of the laboratory light source and that of daylight Light intensities higher than those experienced in actual-use conditions Continuous exposure to light from a laboratory light source without any dark periods |
| 20 | Specimen temperatures that are abnormally high relative to actual-use conditions Exposure conditions that produce unrealistically large temperature differences between light- and… Temperature-cycling conditions that are different from those found in actual-use conditions Unrealistically high or low levels of moisture Absence of biological agents and pollutants |
| 21 | (normative) Procedures for measuring the irradiance uniformity in the specimen exposure area (normative) Procedures for measuring the irradiance uniformity in the specimen exposure area In devices that use a drum to hold the specimens and rotate them around a light source, measure i… Measurement of irradiance in devices using a rotating specimen drum In devices where specimens are positioned in a flat plane in front of a light source, measure irr… Measurement of irradiance uniformity in devices with a flat specimen plane |
| 22 | If the design of the device is such that the maximum irradiance may not be at the centre of the e… As an alternative to irradiance measurements, uniformity of irradiance may be determined by use o… Typical plot of measured property for a reference material showing a linear�change with radiant e… |
| 23 | (normative) Normative references to international publications with their relevant European publi… (normative) Normative references to international publications with their relevant European publi… |
