1、BSI Standards PublicationBS ISO 4548-15:2014Methods of test for full-flow lubricating oil filters forinternal combustion enginesPart 15: Vibration fatigue test for compositefilter housingsBS ISO 4548-15:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 4548-
2、15:2014.The UK participation in its preparation was entrusted to TechnicalCommittee MCE/21/6, Filters for volatile liquid fuels and lubricatingoils.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the ne
3、cessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 74379 5ICS 27.020Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was p
4、ublished under the authority of theStandards Policy and Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedBS ISO 4548-15:2014 ISO 2014Methods of test for full-flow lubricating oil filters for internal combustion engines Part 15: Vibration fatigue test for compos
5、ite filter housingsEssai de fatigue aux vibrations pour matriaux composites Partie 15: Essai de fatigue aux vibrations pour les corps de filtre pressuriss base de matriaux compositesINTERNATIONAL STANDARDISO4548-15First edition2014-07-15Reference numberISO 4548-15:2014(E)BS ISO 4548-15:2014ISO 4548-
6、15:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet
7、 or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.o
8、rgPublished in SwitzerlandBS ISO 4548-15:2014ISO 4548-15:2014(E) ISO 2014 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms, definitions, and graphical symbols . 13.1 Terms and definitions . 13.2 Graphical symbols 14 Operational characteristics to be tested 15
9、 Test rig . 26 Test liquid 27 Preconditioning . 38 Vibration fatigue test . 39 Test report . 5Bibliography 7BS ISO 4548-15:2014ISO 4548-15:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of p
10、reparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental,
11、in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/I
12、EC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility
13、 that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of paten
14、t declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as inform
15、ation about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 70, Internal combustion engines, Subcommittee SC 7, Tests for lubricating oil filters.ISO 4548 co
16、nsists of the following parts, under the general title Methods of test for full-flow lubricating oil filters for internal combustion engines: Part 1: Differential pressure/flow characteristics Part 2: Element by-pass valve characteristics Part 3: Resistance to high pressure and to elevated temperatu
17、re Part 4: Initial particle retention efficiency, life and cumulative efficiency (gravimetric method) Part 5: Cold start simulation and hydraulic pulse durability test Part 6: Static burst pressure test Part 7: Vibration fatigue test Part 9: Inlet and outlet anti-drain valve test Part 10: Life and c
18、umulative efficiency in the presence of water in oil Part 11: Self-cleaning filters. Part 12: Particle retention ability and contaminant holding capacity using particle counting Part 13: Static burst test for composite filters Part 14: Cold start simulation and hydraulic pulse durability for composi
19、te pressure vessel materials Part 15: Vibration fatigue test for composite filter housingsiv ISO 2014 All rights reservedBS ISO 4548-15:2014INTERNATIONAL STANDARD ISO 4548-15:2014(E)Methods of test for full-flow lubricating oil filters for internal combustion engines Part 15: Vibration fatigue test
20、for composite filter housings1 ScopeThis part of ISO 4548 specifies a method of testing the structural integrity of full-flow lubricating oil filters to withstand engine vibrations. This test is intended for application to spin-on type filters and detachable filters with disposable elements with a m
21、aximum flow rate of 100 L/min. Upon agreement between manufacturer and purchaser, this test method can be applied to filters with higher flow rates.This test method is intended for test parts made from composite materials that experience mechanical property changes within the temperature range exper
22、ienced in service. The test can be applied to filters with other temperature sensitive materials if thought applicable by agreement between the filter manufacturer and the purchaser.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and ar
23、e indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 4548-1, Methods of test for full-flow lubricating oil filters for internal combustion engines Part 1
24、: Pressure drop/flow characteristicsISO 1219-1, Fluid power systems and components Graphical symbols and circuit diagrams Part 1: Graphical symbols for conventional use and data-processing applications3 Terms, definitions, and graphical symbols3.1 Terms and definitionsFor the purposes of this docume
25、nt, the terms and definitions given in ISO 4548-1 apply.3.2 Graphical symbolsThe graphical symbols used in this part of ISO 4548 are in accordance with ISO 1219-1.4 Operational characteristics to be testedIntegrally mounted oil filter assemblies, including filter heads, adaptors, mounting brackets,
26、etc., are subjected to forcing frequencies due to engine or installation vibrations. The test specified in this document verifies the ability of the filter assembly to withstand vibration for a predetermined number of cycles while under pressure. ISO 2014 All rights reserved 1BS ISO 4548-15:2014ISO
27、4548-15:2014(E)5 Test rigThe test rig shall comprise the following components, together with the necessary tubing, connectors and supports (see Figure 1):a) electro-mechanical vibrator, together with the necessary hardware and electronics to control and monitor displacement, velocity and acceleratio
28、n;b) oil pressure source, which can be manually or mechanically operated;c) device to measure oil pressure, with sufficient range to cover the rated pressure of the test filter;d) two accelerometers, featuring linear calibration and ranges appropriate for the part being tested;e) filter to be tested
29、, together with filter head or adaptor;f) device to heat the test part to the specified temperature.NOTE This device could be a thermal chamber that fits over the vibrator platform or a system to flow hot oil through the test part.Key1 output accelerometer2 adaptor3 axis of excitation4 pressure sour
30、ce5 oil filter under test6 input accelerometer7 vibrator tableFigure 1 Test rig: First arrangement6 Test liquidThe test liquid shall be oil with a kinematic viscosity of less than 10 mm2/s 5 mm2/s (10 cSt 5 cSt) at ambient temperature ISO viscosity class ISO VG22 at 63 C or SAE 5W at 68 C (see Refer
31、ences 1 and3) or as agreed upon by the filter manufacturer and the purchaser.2 ISO 2014 All rights reservedBS ISO 4548-15:2014ISO 4548-15:2014(E)7 PreconditioningLube filtration products are exposed to engine oils and high temperatures as part of their function. The physical properties of composites
32、 can be affected by the fluid and temperature interactions. The following optional steps lay out a method to precondition the parts to simulate any reduction in material strength due to exposure to lube system conditions. This preconditioning method can be modified as agreed upon by the filter manuf
33、acturer and the purchaser.7.1 Fill the test part with the fluid used in application.7.2 Place the test part in a laboratory oven or thermal chamber and heat to a test temperature and duration agreed upon by the filter manufacturer and purchaser. If no temperature or duration is specified, then heat
34、to 121C for 250 hours. The default conditions are representative of real world conditions and deemed sufficient to promote material property degradation in sensitive materials. At the end of soaking period and after cooling down to ambient temperature, the oil can be drained to facilitate installati
35、on on the vibration stand.NOTE Lube oil will expand when heated. Precautions will be needed to ensure that the test filter does not fail hydrostatically. This can be achieved by leaving one port open to atmosphere.8 Vibration fatigue test8.1 Install the filter on the filter head or adaptor as per Fi
36、gure 1, applying the recommended torque or angle of rotation for the filter to be tested.8.2 Mount the filter and head assembly on a rigid bracket or adaptor plate with high deformation resistance, using suitable jointing or sealant to ensure leak-proof mating surfaces.8.3 Rigidly mount the bracket
37、or adaptor plate/filter assembly on the vibrator table, ensuring that the filter polar axis is at a right angle to the axis of excitation.8.4 Connect the filter to a pressure gauge and to a source of oil pressure at normal ambient temperature, using flexible tubing in such a way as to ensure that it
38、 does not interfere with the vibration of the filter unit.8.5 Attach the input accelerometer to the filter head/adaptor and the output accelerometer to the filter, positioned approximately 100 mm from the top face of the sealing ring, or at a distance equivalent to 85 % of the filter length if the f
39、ilter is shorter than 120 mm. The polar axis of both accelerometers shall be parallel to the axis of excitation (see Figure 1). Make the appropriate electrical connections between the accelerometer, vibration control and monitoring equipment.8.6 Ensure that the test filter is filled with the test li
40、quid and that all entrapped air has been expelled from the assembly. Pressurize the assembly to the rated pressure of the filter, or as agreed upon by the manufacturer and customer. If no test pressure is given, then pressurize the test filter 500 kPa. This pressure shall be maintained throughout th
41、e duration of the test.8.7 Start the application of temperature and bring the test part to 121C or as agreed upon by the filter manufacturer and purchaser before proceeding to step 8.8. Maintain this temperature throughout the vibration test. ISO 2014 All rights reserved 3BS ISO 4548-15:2014ISO 4548
42、-15:2014(E)8.8 Start the vibrator and conduct a resonant search up to a frequency of 400 Hz, maintaining peak input acceleration at a constant value of 60 m/s2 0,3 m/s2, unless otherwise agreed upon by the filter manufacturer and customer.If resonance occurs at a single frequency, then carry out the
43、 following test at that frequency. If resonance occurs at more than one frequency, carry out the following test at the frequency which exhibits the maximum amplitude (peak-to-peak displacement). If resonance does not occur, carry out the following test at a frequency of 150 Hz.Adjust the power of th
44、e vibrator to give peak input acceleration as agreed between the filter manufacturer and engine manufacturer or, in the absence of such an agreement, an acceleration of 60 m/s2, and determine the total amplitude of vibration.NOTE 1 The total amplitude (peak-to-peak) of vibration, S, in metres, can b
45、e calculated as follows:Saf=222piwherea is the peak acceleration, in metres per second squared;f is the frequency of vibration, in hertz.Composite materials can exhibit a non-linear response to an applied force at much lower levels than a metallic material. It is recommended that the response linear
46、ity be verified. If the response is non-linear, then the applicability of this method for the application should be verified.8.9 Test the assembly to a total of 107cycles unless prior failure occurs. Commence testing at the frequency determined in 8.8. Since the resonant frequency of the assembly un
47、der test could vary throughout the test, verify the test filter resonance periodically. This can be done automatically by shaker controllers with resonance tracking. Otherwise, repeat the procedure described in 8.8 and correct the frequency values after each 5 105cycles and continue with the test.8.
48、10 If 107cycles can be completed without apparent failure, then repeat the procedures given in 8.1 to 8.9 but with the test filter oriented such that the polar axis is normal to the axis of excitation. This position and accelerometer locations are shown in Figure 2.8.11 If 107cycles in the second di
49、rection can be completed without apparent failure, determine the removal torque or angle of rotation of the test filter for comparison with the initial setting.8.12 Drain the test of fluid and carefully dismantle it to reveal any visual signs of internal damage.4 ISO 2014 All rights reservedBS ISO 4548-15:2014ISO 4548-15:2014(E)Key1 pressure source2 input accelerometer3 adapter4 axis of excitation5 oil filter under test6 output accelerometer7 vibrator tableFigure 2 Test rig: Second arrangement9 Test reportThe tes
