AS NZS 1906.4:2010 pdf free download – Retroreflective materials and devices forroad traffic control purposes Part 4: High-visibility materials for safetygarments

AS NZS 1906.4:2010 pdf free download – Retroreflective materials and devices forroad traffic control purposes Part 4: High-visibility materials for safetygarments.
For the purpose of this Standard, the definitions below apply.
1.3.1 Viewing geometry
NOTES:
I The following are condensed versions of the corresponding definitions given in CIE 54.2. Reference should be made to the CIE document if a full set of parameters and their definitions is required.
2 An illustration showing the parameters below can be found in AS/NZS 1906.1.
1.3.1.1 Enirance angle
The angle between the axis normal to the retroreflector through its point of reference and the axis joining the point of reference and illumination source.
The angle p has two components. Pi and p as follows:
(a) P1 is the component projected onto the plane containing the observation angle.
(b) P is the component projected onto the plane containing the axis normal to the rctrorcflector and which is at right angles to the plane containing the observation angle.
NOTE: Since this Standard specifies that all CIL/m2 measurements are to be taken with the plane
containing the entrance angle in the same plane as the observation angle, the CIL/m2 tabulations
in Section 2 will show p2 – 0.
The angle between the axis joining the point of reference (usually the centre) on the retrorctlcctor (i.e. either the device or the material sample) and the observer or receptor, and the axis joining the point of reference on the retroreflector and the illumination source.
1.3.1.3 Rolation angle
The angle measured from an arbitrary starring point through which the retroretlective material is rotated during the photometric testing, about an axis normal to. and passing through the centre of. the piece.
1.3.2 Light technical parameters
The quotient expressed in candela per lux (cd.lx), obtained by dividing the luminous intensity, in the direction considered, by the illuminance a the retroreflective surfiice. for given observation. entrance and rotation angles. It is referred to as the ‘CIL value’.
NOTE: This coefficient is applicable to devices that are effectively point sources of light at normal viewing distances.
The value expressed in candela per lux per square metre obtained by dividing the coefficient of luminous intensity of a test piece by the area in square metres of that test piece measured parallel to its surface. It is referred to as the ClUm value’
2.5.1 Colourfastness after UV exposure
The colourfastness of the material UV exposure shall be determined in accordance with AS 200 l.4.l302 Method 5. Exposure shall be continued until the test specimen has been exposed to 225 kim–. When tested in accordance with Appendix A the colour and luminance factor after exposure shall be within the areas specified by the chromaticity coordinates in Table 2.1 and shall meet the minimum luminance factor specified in Table 2.2 for fluorescent or Table 2.3 for non-fluorescent materials.
2.5.2 Colourfastness to washing
When tested in accordance with AS 2001.4.15, TestL2, the material shall show no greater colour
change than 4 on the grey scale. The grey scale comparison shall be made in accordance with AS
2001.4.1, except that the assessment is to be carried out in a colour matching booth complying with
AS 4004. Category BC.
2.5.3 Colourfastness to perspiration
When tested in accordance with AS 2001 .4.E04, the material shall show no greater colour change than 4 on the grey scale. The grey scale comparison and assessment shall be carried out as specified in Clause 2.5.2.
2.6 WET WEATHER PERFORMANCE (OPTIONAL)
An optional wet weather performance test may be carried out on Class F materials. A sample, after immersion in distilled water at 20 5°C for 5 ±2 mm and then allowed to drain naturally for 5 . 2 mm that then meets all of the requirements of Clause 2.3, except for a reduction in luminance factor to not less that 85 percent of that specified in Table 2.3. shall be deemed to have passed this test. This material may then be classified Class F (W) material.