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MIL_STD_1376B.666.pdf
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24 Februarv 1995”
SUPERSEDING
DOD- STD-1376A(SH)
28 February 1986
(See 7.4)
MILITARY STANDARD
PIEZOELECTRIC CERAMIC MATERIAL AND MEAs~
GUIDELINES FOR SONAR TRANSDUCERS
o
AMSC N/A
FSC 5865
~.
Approved
for public release;
distribution is unlimited
Downloaded from http://www.everyspec.com
MIL-STD-1376B(SH)
24
February 1995
FOREWORD
1. This military standard is approved for use by the Naval Sea Systems Command,
Department of the Navy, and is available for use by all Departments and Agencies
of the Department of Defense.
2. Beneficial comments (recommendations , additions, deletions) and any pertinent
data which could
be of use in improving this document should be addressed to:
Commander, SEA 03R42 , Naval Sea Systems Command, 2531 Jefferson Davis Hwy,
Arlington, VA 22242-5160, by using the self-addressed Standardization Document
Improvement Proposal (DD Form 1426) appearing at the end of this document or by
letter.
3. This standard only provides guidelines for designating piezoelectric ceramic
material properties and measurements for use in sonar transducers.
Deviations
from the properties of the standard ceramic types are acceptable when required by
the individual equipment specification provided the properties so modified are
self-consistent. This document is not intended to replace an acquisition specifi-
cation and/or drawing for individual ceramic elements. All essential requirements
for physical, mechanical,
and piezoelectric properties must be completely stated,
with appropriate tolerances and
test requirements , in the individual ceramic
element acquisition specification.
4. The general properties specified permit a wide range of values for each type
ceramic and are included in this standard solely for the purpose of defining the
types of piezoelectric ceramic intended for use in Navy sonar transducers .
some
●
of the properties and their associated values specified can be determined only by
measurement on a specific geometric shape; for example, a thin disc, and values
for these properties,
such as the coupling factor and frequency constant, should
not be specified in the acquisition of ceramic elements which do not meet the
necessary geometric criteria.
The individual specification for ceramic elements
shall list required measurements and values, some of which can be only determined
from actual measurements on the specific ceramic material and shape.
ii
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Paragraph 1.
1.1
1.1.1
2.
2.1
2.2
3.
3.1
3.1.1
3.1.2
3.1.3
3.2
3.3
3.6
4.
6.1
6.1.1
MIL-STD-1376B(SH)
26 February 1995
CONTSNTS
MS!?
SCOPE ................................................
scope ..................... ..........................
Appendices
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
APPLICABLE DOCU3CZNTS .................................
Non-Covernmenc publications
.........................
Order of precedence
.................................
DEFINITIONS
..........................................
Terminology
...............................
...........
Standard test specimens
............................
Cermmlc elements
....................................
Individual equipment spacificacion
..................
Units and symbols
...................................
Dimensioning and tolerancing
........................
Rounding off
of data
................................
CENSIWL REQUIREMENTS
.................................
Standard cammic typas
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard ceramic type composic~ons
. . . . . . . . . . . . . . . . . .
6.1.1.1
Plodified compositi&s ...............................
5.
5.1
5.2
5.3
5.6
5.5
5.6
6.
6.1
6.2
6.3
b.k
6.5
6.6
6.7
6.8
6.9
6.10
6.11
6.12
7.
$
7.1
7.2
7.3
7.4
STANDARD TEST DISC CONFICU’IWTION
.....................
Standsrd test specimens
.............................
Dimensions and finish of standard cast specimen
.....
Electrodes ..........................................
Markings
............................................
Poling
..............................................
Workmanship .........................................
EXAMINATION AND TESTS FOR STANDARD TEST DISC SPECIMENS
He chod
..............................................
Dansity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical measurements
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Small signal properties
.............................
Aging rate determination
............................
Mechanical quslity factor
...........................
Temperature characteristics of KIs ..................
High- field measurements
.............................
Dimem ions
..........................................
Electrode resistance
................................
Electrode adherence .................................
Responsibility for inspection
.......................
NOTES ................................................
Incanded use ........................................
Issue of WDISS .....................................
Subject term (key vord) listing .....................
Changes from previous issue
.........................
iii
1
1
1
1
1
2
2
2
2
2
2
2
2
5
5
5
8
8
8
8
8
8
9
9
9
9
9
9
9
9
9
9
10
10
10
10
10
10
10
10
11
11
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MIL-STD-1376B(SH)
24 February 1995
Appendix A
B
c
Figure 1.
2.
3.
4.
5.
6.
7.
Table I.
II.
III.
IV.
v.
CONTENTS - Continued
Suggested Acquisition practices and data
requirements
.......... . .. ...... ................
13
Guidance in selection and specification of
piezoelectric ceramic . .. ...... . .. ..... 15
Conversion of disc parameters to pertinent
. .
coefficients of other modes .........................
29
FIGURES
Planar and effective coupling factor as a function
of Af/fm .. .. .. ..... ............................
4
Open chips ................................. ... .. .. 15
Closed chips ............................. .. . . . 16
Pits ......................... . ... . .. .. 16
Vector admittance diagram of a piezoelectric
resonator .......................... . . .
19
Typical format for production ceramic elements -
ring ....... . .. . . .. . ....... .. . .. .
23
Suggested specification guide for ceramic elements .. 25
TABLES
Glossary, symbols, definitions, and units .. . . . 2
General properties and small signal values of
ceramic standard types measured with the
standard disc (10-day values) ..... .. ........ . 6
Large signal dielectric properties of ceramic
standard types (measured in air) at one discrete
frequency from 60 to 1000 Hz measured with a
standard disc ..................... .. .............
8
Typical mechanical tolerance levels for cylinders-
tubes-rings .........................................
21
Typical mechanical tolerance levels for plates and
discs ............................... .. ... .. 22
iv
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FIIL-STD-1376B(SH)
26
Februsry 1995
1.
SCOPE
1.1 &QQ.
This standard describes six types
materials utilized co manufacture sonar transducers
of piezoelectric cersmic
for the Naval service. This
stsndsrd also describes the properties of the ceramic compositions for these six
types as measured on standard test specimens.
1.1.1
ADD
endices. Appendices attached provide clarification and assistance
in the use
of this standard.
2. APPLICABLE DOCUHENTS
2.1
flon-Government publications.
The following document(s) form a part of
this document to the extent specified herein.
Unlees otherwise specified, the
issuss of the documents which are
DOD adopted are those listed in the issue of the
DODISS cited in the solicitation.
Unless otherwise specified, the issues of
documente not listed in the DODISS are the issuee of tha decuments cited in the
solicitation (see 7.2) .
AHERICAN NATIONAL STANDARD INSTITUTE (ANSI)
n4.5n -
Dimensioning and Tolerant ing. (DoD adopted)
(Application for copies should be addressed co the American National
Scandsrds Institute, 11 West 42nd Street, 13th Floor, New York, NY 10036. )
AMERICAN SOCIETY FUR TESTING AND KATERIAIS (ASTM)
E 29
- Standard Practice for Using Significant Digits in Teat Data
to Oecermine Conformance Specif icarions.
E 380 - Standsrd Practice for che
Use of che Internstionsl System
of Unirs (S1) (the flodarnized Metric System).
(Application for copies should be addressed to the American Society for
Testing and Matarials, 1916 Race Street, Philadelphia, PA 19103. )
INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS (IEEE)
176 - Standard on Piezoeleccricity.
(Application for copies should be addressed to the Institute of Electrical
and Electronic Engineers, Inc. , 665 Hoes hne,
P.O. Box 1331, Piscatavay, NJ
08855 -1331.)
(Non-Goverrunent standards and other publication are normally available from
the organizations that
prepare or distribute the documents.
These
documents also
WY ba available in or through libraries or other informational services. )
2.2 Order of Precedence.
In r.heevent of a conflict berveen the text of
this dmcument and the references cited herein (except for related associated
detail specifications, specifications, specification sheets or W standsrds) , the
text of this document takes precedence.
Nothing in this document, however,
supersedes applicable laws and regulations unless a specific exemption has been
obtained.
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