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1、. v J e . , J I S Z*2279 92 W q933608 0510339 189 M IS JAPANESE INDUSTRIAL STANDARD Method of high temperature low cycle fatigue testing for metallic materials UDC 620.1 78.37/.38:669 Translated and Published bY Japanese Standards Association Printed in Japan 7s Copyright Japanese Standards Associat
2、ion Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:45:36 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S Z*2274 42 M 4433608 05l10340 T O In the cvcnt of any doubt arising, the original Standard
3、 in Japanese is to be final authority. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:45:36 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S Z*2279 92 493
4、3608 0530343 837 UDC 620.178.37 / .38:669 JAPANESE INDUSTRIAL STANDARD J I S Method of high temperature low cycle fatigue Z 2279-1992 testing for metallic materials 1. ScoPe This Japanese Industrial Standard specifies the method of fatigue testing by the single shaft tension and compression under a
5、specified controlled range of strain, to determine the low cycle fatigue lift of metallic materials at high temperature. 2. Definitions of terms (symbols) For the purposes of this standard, the definitions of the main terms (symbols) are as follows. (1) stress (6) The value is obtained by dividing t
6、he axial load of the test piece by the original cross section of the test piece, as is calculated by the following equation. P Ao b=- where, 6 : stress (MPa)or (N/mmz) I P : axial load (N) (positive for tension and negative for A o : original cross section of test piece (mmz) compression) (2) total
7、strain (:e) The value is obtained by dividing the difference of the gauge length after deformation and the initial gauge length of the test piece by the initial gauge length of the test piece, as is calculated by the following equation. I- lo lo Et = - where, Et : total strain (mm/mm) (dimensionless
8、) or (%)I I : gauge length of test piece after deformation (mm) l, : initial gauge length of test piece (mm) Remarks: The initial gauge length lo shall be, in principle, the gauge length that is observed by heating the test piece to the test temperature after attaching an extensometer to the test pi
9、ece. However, if the initial gauge length cannot accurately be measured, the gauge length at room temperature may be used instead. The maximum and minimum values of the total strain are represented by Et max and Et mln , respectively. Copyright Japanese Standards Association Provided by IHS under li
10、cense with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:45:36 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S Z*2279 92 4933bOB 05LO3LiZ 773 W 2 Z 2279-1992 (3) elastic strain (ee) The elastic component of the total strain. The
11、 value is obtained by dividing the stress u by the modulus of longitudinal elasticity (Youngs modulus), as is calculated by the following equation. U er where, Be : elastic strain C imm/mmj (dimensionless u : stress !-ciPa) or X/mmzjl or (dimensionless) or ( % ) I et : total strain (mm/mm) (dimensio
12、nless) or (%j Ein : inelastic strain (mm/mm) (dimensionless) or ( % ) I (12) inelastic strain range (A each one segment on both side of A is B; segments outside gauge length is C; applying portion of strain gauge is D; and other, applying portion of thermocouple) (Divide the distance between the (i)
13、 The total strain range ( A d , elastic strain range (A&,), inelastic strain range ( A E , ) , and their relation to the number of fracture repetition (4) shall be illustrated in the log-log graph. relation to the number of rupture repetitions (Nupl shall be illustrated. If the number of fracture re
14、petitions cannot. be determined, their Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:45:36 MDTNo reproduction or networking permitted without license from IHS -,-,- a c 0 a b e a J I S
15、 Z*2279 92 = 4933bOB 0530350 B 4 T Z 2279-1992 Edition 1 Japanese Text Established by Minister of International Trade and Industry Date of Establishment: 1992-03-01 Date of Public Notice in Official Gazette: 1992-04-28 Investigated by: Japanese Industrial Standards Committee Divisional Council on Ir
16、on and Steel This English translation is published by: Japanese Standards Association 1-24, Akasaka 4, Minato-ku, Tokyo 107 Japan O JSA, 1993 Printed i n Tokyo by Hohbunsha Co., Ltd. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:45:36 MDTNo reproduction or networking permitted without license from IHS -,-,-