JIS-B-1081-1997-ENG.pdf
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1、STD-JIS B LOBI-ENGL 1997 4933b08 05b4270 705 J IS JAPANESE I N DU STR AL STANDARD Translated and Published by Japanese Standards Association Threaded fasteners- Axial load fatigue testing- Test methods and evaluation of results ICs 21.040.01 Descriptors : threads, threaded fasteners, fatigue testing
2、, tensile testing Reference number : JIS B 1081 : 1997 (E) 13 S Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 20:47:36 MDTNo reproduction or networking permitted without license from IHS
3、-,-,- STDoJIS 8 3083-ENGL 3997 B 1081 : 1997 (IS0 3800 : 1993) Foreword m 4933608 0564293 641 This translation has been made based on the original Japanese Industrial Standard revised by the Minister of International Trade and Industry through deliberations at Japanese Industrial Standards Committee
4、 in accordance with the Industrial Standardization Law. Consequently JIS B 1081 : 1991 is replaced with JIS B 1081 : 1997. Date of Establishment: 1986-02-01 Date of Revision: 1997-01-20 Date of Public Notice in Official Gazette: 1997-01-20 Investigated by: Japanese Industrial Standards Committee Div
5、isional Council on Machine Elements JIS B 1081 : 1997, First English edition published in 2000-07 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final a
6、uthority. O JSA2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan Copyright Jap
7、anese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 20:47:36 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS B 1081-ENGL 1777 4933608 05b4272 588 JAPANESE INDUSTRIAL STANDA
8、RD JI$ B 1081 : 1997 (IS0 3800 : 1993) Threaded fasteners- Axial load fatigue testing- Test methods and evaluation of results Introduction This Japanese Industrial Standard has been prepared based on IS0 3800, Threaded fasteners-Axial load fatigue testing-Test methods and evaluation ofresults issued
9、 in 1993 as the first edition without changing the technical contents. The “Remarks” and “Informative references” underlined with dots in this Stan- dard are the matters not included in the original International Standard. 1 Scope This Japanese Industrial Standard specifies the conditions for carryi
10、ng out axial load fatigue tests on threaded fasteners, as well as recommendations for the evaluation of the results. Unless otherwise agreed, the tests are of the fluctuating tension type and are car- ried out at room temperature, the loading applied being centric along the longitudi- nal axis of th
11、e fastener. The influence of the compliance of clamped parts on the strain of the fastener is not taken into account. This method allows determination of the fatigue strength of threaded fasteners. The test results can be influenced by the test conditions. For this reason, mini- mum requirements are
12、 specified to reduce this effect. In addition, calibration and centering control methods for the testing apparatus are included. Remarks : The International Standard corresponding to this Standard is as follows. IS0 3800 : 1993 Threaded fasteners-Axial _._._._ load fatigue _._ _._._ testing-Test _._
13、. methods and evaluation of results _._._ _._-.-.-.-.-. _-._._. 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. The most recent editions of the standards indicated below shall be applied. JIS B 1001
14、Remarks : _._._._. JIS B 1005 Remarks : JIS B 1181 Remarks : -_._.-_ Diameter of clearance holes and counterbores for bolts and screws The provisions cited from IS0 273 : 1979, Fasteners-Clearance holes for bolts and screws are equivalent to the corresponding provisions in the said standard. ._._ .
15、_l_. _._._. _ _._. Radii under the head for external threaded fasteners Hexagon nuts and hexagon thin nuts The provisions cited from IS0 4032 : 1986, Hexagon nuts, style 1-Prod- uct grades A and B, IS0 4033 : 1979 Hexagon nuts style 2-Product grades A and B, IS0 8673 : 1988 Hexagon nuts style 1, wit
16、h metric nepitch thread- roduct grades A and B and IS0 8674 - 1988 Hexa- gonrz-n-uts, style 2, with metric fine pitch thread-Product grades A and B, are equivalent to the corresponding provisions in the said standard. _._._. _. _._._._. - - - . . - - - - - . - . - - - . - - - - - -_. . -. . . . . .
17、. - -. . . . - . . . . . . . . . . . . . . . - - - . . ? . -. . . . . . . . . . . - - - . . - - - - . -. -? . - - -. . . . . - . . -. . _. . . . ._._ ._._ _ ._._._ _._._._ ._._._ 2 ._._-.- ._. 2- ._ _. _._._ ._._ ._._._ fi -_. _._._._._-.-. -.? -. .- -._._ _._._-.-.- _._ ._ I _._ 2 ._ _. _. _._ . _.
18、_._. ._._._ _._. _._._._._. _._ . . Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 20:47:36 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS B 1081-ENGL 19
19、97 4933b08 0Cb4293 414 = 2 B 1081 : 1997 (IS0 3800 : 1993) 3 Symbols and their designations Standard shall be as shown in Table 1. The symbols and their designations in this Symbol A s d di d2 da da D FA F U I H N NO P Pf Table 1 Symbols and their designations Designation Area at nominal minor diame
20、ter, a e.g. Oa or logN. Informative reference : The standard values specified in JIS B 1051 Mechanical proper- ties of steel bolts and screws are generally applied to Rm.2 and R , , , . -.-_._-_-_-_ _.-_-_-.- _-_ _-_. ._-_. c . Copyright Japanese Standards Association Provided by IHS under license w
21、ith JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 20:47:36 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 B 1081 : 1997 (IS0 3800 : 1993) 4 Principle Tests are made on threaded fasteners to determine fatigue proper- ties such as those
22、 shown by SIN curve (the Whler curve). Threaded fasteners to be tested are mounted in an axial load fatigue testing ma- chine and subjected to fluctuating tension type loading. Tests with constant mean stress Om or constant stress ratio R, = Omin/omax may be used. Constant mean stress is used genera
23、lly to determine infinite life see case (c) Constant stress ratio is generally for quality acceptance testing see case (a) in Fig. 101. The test is continued until the test piece fails, or until a predetermined number of stress cycles has been exceeded. Generally the number of test cycles is deter-
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