1、 SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2017 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/J1355_201708 SURFACE VEHICLE RECOMMENDED PRACTICE J1355 AUG2017 Issued 1981-03 Revised 2017-08
5、Superseding J1355 APR2010 Test Method for Measuring Thickness of Resilient Insulating Paddings RATIONALE Update contact information in Appendix A. 1. SCOPE This SAE Recommended Practice describes a laboratory test procedure for measuring the thickness of various resilient insulating padding material
6、s that are used in the automotive industry. Such padding materials may include synthetic or non-synthetic materials, fibrous or cellular materials, high loft or compressed materials, single layer homogeneous or multilayer products, low and high surface density products. Some of these samples may be
7、deformable and elastic, high loft thermal and acoustical fibrous materials, as well. The test method described herein has been developed to establish a means of a uniform procedure for measuring the thickness of different types of samples not only for application to all ground vehicles, but also may
8、 be applicable to other situations or conditions. The test method is designed to measure the thickness of flat samples and not formed parts. This test method does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard
9、 to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. This test method provides a different thickness measuring device than what has been mentioned in SAE J1355_198704. 2. REFERENCES 2.1 Applicable Documents The following public
10、ations form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply. 2.1.1 SAE Publication Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada)
11、or +1 724-776-4970 (outside USA), www.sae.org. SAE TSB 003 Rules for SAE Use of SI (Metric) Units SAE INTERNATIONAL J1355 AUG2017 Page 2 of 5 2.1.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm
12、org. ASTM D5736 Standard Test Method for Thickness of Highloft Nonwoven Fabrics 3. APPARATUS 3.1 It is a parallel plate four-bar linkage thickness measuring device with a counter weight. Appendix A at the end of this standard provides some sources from where this device can be procured. This device
13、 is essentially a table with an upright at the rear (see Figure 1). There are four pivotal arms connected to the upright in such a way that the pivotal arms can carry a flat platen of 305 mm x 305 mm size. The pivotal arms are attached to the uprights and the platen in such a way that when the arms
14、are raised or lowered, the platen is also raised or lowered with its faces staying parallel to the base plate at all times. The specimen (material to be measured) is placed on the table, a predetermined weight (load) is placed on the platen, and then the platen is lowered until it rests lightly on t
15、he material. The thickness of the specimen is shown in the thickness measuring indicator. 3.2 Thickness Gauge Thickness measuring indicator with single point-contact loading foot and 0.1 mm or equivalent graduations. 3.3 Cutting Dies or Templates To cut specimens 305 mm x 305 mm in size with a toler
16、ance not to exceed 3 mm. Figure 1 - Photograph of a typical parallel plate four-bar linkage thickness measuring device SAE INTERNATIONAL J1355 AUG2017 Page 3 of 5 4. TEST SPECIMENS 4.1 Two test specimens having the dimensions 305 mm x 305 mm shall be cut from the same lot (roll of articles), and sha
17、ll also be free of folds, creases, or wrinkles. Avoid getting oil, water, grease, and so forth, on the test specimens when handling. 4.2 The test specimen shall be placed such that the edges of the test specimen line up evenly with the base plate (thickness measuring table) to minimize any contribut
18、ion of edge effects. 5. CONDITIONING 5.1 After removal from the packaging, lay the sample on a flat surface for a minimum of twelve hours before cutting specimens and measuring thickness. It is recommended to condition the sample in the same environment where the measurements will be made. If the sa
19、mple is in a compressed state and circumstances will not permit lengthy sample conditioning, the sample shall be released from compression through natural means (i.e., rising on its own accord after removal from the packaging) and allowed to recover for at least 30 minutes before cutting and testing
20、 or as long as possible, (but more than 30 minutes), and this should be documented in the reported data. In no case, shall additional thickness recovery methods such as shaking or pulling the material be used to increase the thickness to the nominal thickness even if the natural means of recovery is
21、 below the nominal thickness. 5.2 Tests for material classification and for arbitration purposes shall be made after the test material has been conditioned properly. Tests should be conducted at the standard conditions in the laboratory, and the temperature and the relative humidity should be docume
22、nted and reported. 6. PROCEDURE 6.1 Perform the following steps in a controlled atmosphere per 5.2. 6.2 Place the thickness measuring device on a flat surface large enough to accommodate the device and test specimens. Handle the test specimens carefully. Insure that the thickness measuring device is
23、 functioning according to the manufacturers recommendations. The pivot points on the platen should move smoothly and should not bind or stick. 6.3 Record in C the temperature of the testing environment, as well as the relative humidity. 6.4 Verify or set the thickness measuring indicator to zero by
24、carefully lowering the platen before measuring the thickness of the specimens. 6.5 Raise and balance the platen to a height of 50 mm from the base plate, or to a height greater than that of the thickness of the specimen (if more than 50 mm) by carefully turning the counterweight at the rear until th
25、e platen is balanced and at rest at this height. 6.6 Place a specimen of the material to be tested on the base plate such that when the platen is lowered its edges line up evenly with the test specimen. 6.7 Two different weights are recommended for measuring the thickness. These are 150 g weight 1 g
26、 weight and 300 g weight 1 g weight. 6.8 Place the 150 g weight near the center of the platen and gradually lower the platen until it contacts the surface of the specimen. Release control of the weight and allow the specimen to be compressed for 10 seconds. This is also known as the loading time int
27、erval. 6.9 Record the thickness from the thickness measuring indicator. 6.10 Rotate the specimen to its next side and follow 6.6 and 6.9 to measure and record its thickness until all sides have been measured. A total of four measurements shall be made for each specimen and arithmetically averaged to
28、 obtain the measured thickness for that specimen. 6.11 Repeat steps 6.8, 6.9, and 6.10 using the 300 g weight. SAE INTERNATIONAL J1355 AUG2017 Page 4 of 5 6.12 If the average thickness of the specimen as measured with a 150 g and 300 g weight varies more than 10% (i.e., 1 mm variation on a 10 mm thi
29、ck specimen) due to the difference in weight (i.e., the 150 g weight and 300 g weight), the 150 g weight shall be used and reported for the correct measurements. Otherwise, the 300 g weight shall be used and reported for the correct measurements. 6.13 Repeat the measurements on the other test specim
30、en using the appropriate weight. Average the thickness of the two test specimens to obtain the average measured thickness of the test sample. 7. REPORT Report the following information: 7.1 Report that the thickness was determined as directed in this test method. 7.2 Description of the material or p
31、roduct tested. 7.3 Weight applied to platen. 7.4 Condition temperature, relative humidity, and time. 7.5 Number of specimens per sample. 7.6 Average thickness. 7.7 Any modification made in accordance with this test method. 8. NOTES 8.1 Revision Indicator A change bar (l) located in the left margin i
32、s for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (
33、R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY THE SAE ACOUSTICAL MATERIALS COMMITTEE SAE INTERNATIONAL J1355 AUG2017 Page 5 of 5 APPENDIX A A.1 INFORMATION ON THE THICKNESS MEASURING DEVICE This device is commonly known as Measure-Matic (also known as the Gustin-Bacon). Some possible sources of procuring the Measure-Matic device are: CertainTeed Machine Works, 101 Hatfield Road, Winter Haven, FL 33880, 800-237-7841; Fabriweld Corporation, 360 Eastpark Drive, Norwalk, OH 44857; 419-668-3358; .
