经历的意思SURFACE
志愿者日志VEHICLE
STANDARD SAE Technical Standards Board Rules provide that: ‘‘This report is published by SAE to advance the state of technical and engineering sciences. The u of this report is
entirely voluntary, and its applicability and suitability for any particular u, including any patent infringement arising therefrom, is the sole responsibility of the ur.’’
SAE reviews each technical report at least every five years at which time it may be reaffirmed, revid, or cancelled. SAE invites your written comments and suggestions. Copyright © 2004 SAE International
All rights rerved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwi, without the prior written permission of SAE.
TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada)
Tel: 724-776-4970 (outside USA)
2.1.2 ASTM P UBLICATIONS
Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. s
共产主义道德ASTM G 113 Standard Terminology Relating to Natural and Artificial for Non-Metallic Materials
ASTM G 130 Standard Method for Calibration of Narrow and Broad-Band Ultraviolet Radiometers Using
a Spectroradiometer
ASTM G 147 Standard Practice for conditioning and Handling of Nonmetallic Materials for Natural and Artificial Weathering Tests.
ASTM G 155 Standard Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials
ASTM G 151 Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that U laboratory Light Sources.
ASTM G 156 Standard Practice for Selecting and Characterizing Reference Materials Ud to Monitor Consistency of Operating Conditions in an Exposure Test.
ASTM D 859, Standard Test Method for Silica in Water
ASTM D 4517, Standard Test Method for Low-Level Total Silica in High-Purity Water by Flameless Atomic Absorption Spectroscopy
ASTM D 523, Standard Test Method for Specular Gloss
ASTM D 660, Standard Test Method for Evaluating Degree of Checking of Exterior Paints
ASTM D 714 Standard Test Method for Evaluating Degree of Blistering of Paints
ASTM D 2244, Standard Test Method for Calculation of Color Differences from Instrumentally Measured Color Coordinates
2.2 Related Publications
The following publications are for information purpos only and are not a required part of this document.
2.2.1 ISO P UBLICATIONS
Available from ANSI, 25 West 43rd Street, New York, NY 10036
ISO 4892-1, Plastics - methods of exposure to laboratory light sources, Part 1, General guidelines
ISO 4892-2, Plastics - Methods of Exposure to laboratory light sources, Part 2 Xenon arc sources
3. Definition
3.1 Black Panel Thermometer, n
device, the nsing unit of which is coated with black enamel designed temperature-measuring
3.1.1 A
to absorb most of the radiant energy encountered in fade/weathering testing. This is referred to
as an un-insulated Black Panel
NOTE—The devices provide an estimation of the maximum temperature a specimen might attain during exposure to natural or artificial light.
3.2 BST–Black Standard Thermometer- Insulated Black Panel Thermometer - Refer to ASTM G 151
Annex 2 for definition .
3.3 Other Definitions
Definitions applicable to this standard can be found in ASTM G 113.
4.
Significance and U 4.1 This test method is designed to simulate extreme environmental conditions encountered outside a
vehicle such as sunlight, heat, and moisture (in the form of humidity, condensation, or rain) for the
purpo of predicting the weathering performance of automotive materials .
5. Apparatu s
5.1 The equipment manufacturer is responsible for the approval of the equipment and for providing the学车心得体会
proof of compliance of the critical test parameters, including the different spectral power
distributions (SPDs) that are required by contractual parties. Materials ud for the compliance
testing should include the approved lots of standard reference materials, such as the Testfabrics polystyrene and/or the AATCC L4 & L2 Blue Wools as appropriate. It is the responsibility of the
instrument manufacturer to provide all necessary data to demonstrate compliance of each model
type with this specification. At the minimum, the data should include (1) all the pertinent spectral
过敏反应的特点
power distribution (SPD) data for 250-800 nm, (2) repeatability and reproducibility data for the
current approved lots of standard reference materials. Contractual parties should agree upon the
instrument model prior to testing .
NOTE—In normal practice, different instruments may give different results. The result depends on
sample characteristics and instrument design. Refer to ASTM G 155 4.3 and 4.4 for more
information.
5.2 The apparatus employed utilizes a xenon-arc lamp(s) as the source of radiation. The samples
shall be mounted in a manner to expo the samples to the uniform conditions of the test chamber.
The instrument must have the means to simultaneously and automatically control irradiance, black
panel temperature, relative humidity and chamber temperature. Customer and supplier should
agree upon the manufacturer and model of the cabinet before testing begins .严惩不贷什么意思
5.2.1 A more detailed description of the apparatus can be found in ASTM G 151 and ASTM G 155
5.3月子水果
The apparatus must have an un-insulated black panel thermometer as described in ASTM G 151
unless otherwi agreed upon by contractual parties . N OTE —(For Information only): A Black Standard Thermometer – BST- is specified in some standards –
A Definition can be found in ASTM G 151 Annex two for a BST. The temperature is to be agreed
upon by contractual parties. The BST is typically 5C° higher than the un-insulated black panel.
5.4 Manufacturers of exposure devices shall assure that the irradiance at any location in the area ud
for specimen exposures is at least 70% of the maximum irradiance measured in this area .
藏马熊
