JIS-Z-2353-1991-ENG.pdf
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1、JIS UDC 620.1 79.1 6534.2254-16 JAPANESE INDUSTRIAL STANDARD Methods for measurement on ultrasonic velocity of solid by pulse technique using reference test pieces Translated and Published by Japanese Standards Association Printed in Japan 16s Copyright Japanese Standards Association Provided by IHS
2、 under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 23:08:22 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S Z*2353 91 4933608 0088372 b In the event of any doubt arising, the original Standard in Japanese is to be fi
3、nal authority. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 23:08:22 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS Z*2353 71 4733608 0088373 8 - - _ UDC 6
4、20.179.16:534.22:54-16 JAPANESE INDUSTRIAL STANDARD J I S Methods for measurement on ultrasonic Z 2353-1991 velocity of solid by pulse technique using reference test pieces 1. Scope This Japanese Industrial Standard specifies the methods for measurement of the ultrasonic velocity in solids by .the u
5、ltrasonic pulse echo method and transmission method using reference test pieces and methods for indicating the results of measurement. Remarks: The following Standards are cited in this Standard: JIS C 3501-Radio-Frequency Coaxial Cables JIS Z 2300-Glossary of Terms Used in Nondestructive Testing JI
6、S Z 2344-General Rule of Ultrasonic Testing of Metals by the Pulse Echo Technique JIS Z 2345-Standard Test Blocks for Ultrasonic Testing JIS Z 2355-Methods for Measurement of Thickness by Ultrasonic Pulse Echo Technique 2. Definition The definitions of the main terms used in this Standard shall be a
7、s specified in JIS Z 2300 and JIS Z 2355. 3. Measuring devices and materials 3.1 Ultrasonic velocity measuring device One of the following ultrasonic velocity measuring devices shall be used: Measuring devices which directly indicate the ultrasonic velocity The performance of measuring devices which
8、 directly indicate the ultrasonic velocity shall allow direct digital indication of the ultrasonic velocity to at least 4 significant figures. Ultrasonic thickness meter with indicator This meter is A-sean display ultrasonic flaw detector y capable of indicating the pulse intervals gn the indicator
9、by digital values. Digital ultrasonic pulse thickness meter meter shall be such as allows direct digital indication of the thickness to at least 3 significant figures. Ultrasonic flaw detector The performance of A-scan display ultrasonic flaw detectors y including the electromagnetic types y shall b
10、e such that the linearity of the time axis of the indicator is within +1 % when measured as given in Annex 1 of JIS Z 2344. The performance of this Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/1
11、3/2007 23:08:22 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S Z*Z353 71 9 4733608 0088374 T 9 (a) Measuring device which directly indicates the ultrasonic velocity 2 Z 2353-1991 Single-oscillator longitudinal wave vertical contact probe 3.2 Measuring frequency The f
12、requency used for measurement by the pulse echo method shall be such as can give 5 or more easilv discernible (c) Digital ultrasonic thickness Ultrasonic flaw detector meter - bottom echoes, or where this is difficult, at least 2 easily discernible bottom surface echoes. Single-oscillator transverse
13、 wave vertical contact probe Single-oscillator longitudinal wave vertical contact probe 3.3 Contact probes The contact probes used shall be as follows: Contact probes of any oscillator size may be used, but in measure- ments on a curved measuring surface by the direct contact method, the probe used
14、shall have an oscillator size small enough that the effect of such curvature can be neglected. The contact probes shall operate at the frequencies specified in 3.2. The deflection angle of the beam axis of the contact probes used for measurement shall be measured as given in Annex 1 and shall be ver
15、ified to be wihtin 1 degree. For measurement of the longitudinal wave ultrasonic velocity, the contact probes may be single-oscillator longitudinal wave vertical contact probes for use by direct contact or water immersion, or double-oscillator vertical contact probes for use by direct contact. For m
16、easurement of the transverse wave ultrasonic velocity, single- oscillator transverse wave vertical contact probes for use by direct contact shall be used. The ultrasonic velocity measuring device may be used in combi- nation with any of the contact probes listed in Table 1 . Table 1. Combinations of
17、 utrasonic velocity measuring devices and contact probes Type of contact probe I Type of ultrasonic velocity measuring device (b) Ultrasonic thickness meter with (Double-oscillator vertical indicator I contact probe) (I) (Double-oscil lator vertical I contact probe) Single-oscillator transverse wave
18、 vertical contact probe I Electromagnetic ultrasonic longi- tudinal wave vertical contact probe I Electromagnetic ultrasonic trans- verse wave vertical contact probe Note (I) The use of probes indication parenthese shall be avoided as far as possible. 3.4 Measuring systems The systems for ultrasonic
19、 velocity measurement shall be classified as shown in Table 2 based on the ultrasonic velocity measuring device used, the combined contact probes, and the pulse signal used for ultrasonic velocity measurement. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IH
20、S Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 23:08:22 MDTNo reproduction or networking permitted without license from IHS -,-,- e JIS ZS2353 71 W 4733608 0088375 I 3 2 2353-1991 Table 2, Ultrasonic velocity measuring systems Measuring system Multiple-echo system (.B,-B, syste
21、m) Surface echo and first bottom surface echo system S-B, system) Corrected point of inci- dence and first bottom (R-B; system) . surface echo system Transmission pulse system direct contact method (m system) Transmission pulse system water immersion method (Ti system) Pulse signal used for ultra- s
22、onic velocity measurement As a rule, multiple echo B, and B, ; but where a number i . 1 satis- fying the condition n2B1 can not be used, Bz shall be used as B,. Surface echo of test specimen and first bottom surface echo Starting point of measurement, corrected by use of a test piece of known thickn
23、ess, and first bottom surface echo Dispatched pulse and trans- mitted pulse (U) Starting point of measurement, corrected by use of a test piece of known thickness, and transmitted pulse ( U ) Figure (basic indication) B1 (start in R point08 measure- ment) T Copyright Japanese Standards Association P
24、rovided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 23:08:22 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S Z*Z353 71 W 4733608 0088376 3 4 Z 2353-1991 3.5 Contact probe cables The contact probe cables
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