MIL-STD-810H, Environmental Engineering Considerations and Laboratory Tests
Last Updated 29 Oct 2026
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528.1 MECHANICAL VIBRATIONS OF SHIPBOARD EQUIPMENT (TYPE 1 – ENVIRONMENTAL AND TYPE II – INTERNALLY EXCITED) CONTENTS
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1. SCOPE
1
1.1 PURPOSE
1
1.2 APPLICABILITY
1
1.3 CLASSIFICATION
1
1.4 LIMITATIONS
1
2. APPLICABLE DOCUMENTS AND DEFINITIONS
1
2.1 GENERAL
1
2.2 DEFINITIONS
1
3. INFORMATION REQUIRED
3
3.1 PRETEST
3
3.2 DURING TEST
4
3.3 POST-TEST
4
4. GENERAL REQUIREMENTS - TEST PROCESS
5
4.1 TEST FACILITY
5
4.2 CONTROLS
5
4.2.1 CONTROL STRATEGY
5
4.2.1.1 ACCELERATION INPUT CONTROL STRATEGY
5
4.2.1.2 FORCE CONTROL STRATEGY
5
4.2.1.3 ACCELERATION LIMIT STRATEGY
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4.2.1.4 ACCELERATION RESPONSE CONTROL STRATEGY
6
4.2.1.5 WAVEFORM CONTROL STRATEGY
6
4.2.2 TOLERANCES
6
4.2.2.1 ACCELERATION SPECTRAL DENSITY
6
4.2.2.2 PEAK SINUSOIDAL ACCELERATION
7
4.2.2.3 FREQUENCY MEASUREMENT
7
4.2.2.4 CROSS AXIS SENSITIVITY
7
4.3 TEST INTERRUPTION
7
4.3.1 INTERRUPTION DUE TO LABORATORY EQUIPMENT MALFUNCTION
7
4.3.2 INTERRUPTION DUE TO TEST ITEM OPERATION FAILURE
7
4.3.3 INTERRUPTION DUE TO A SCHEDULED EVENT
8
4.3.4 INTERRUPTION DUE TO EXCEEDING TEST TOLERANCES
8
5. DETAILED REQUIREMENTS
8
5.1 PROCEDURE I (TYPE I) - ENVIRONMENTAL VIBRATION
8
5.1.1 BASIS OF ACCEPTABILITY
8
5.1.2 TEST PROCEDURES
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5.1.2.1 TESTING MACHINE
9
5.1.2.2 ADDITIONAL TEST INSTRUMENTATION
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5.1.2.3 METHODS OF ATTACHMENT
9
5.1.2.4 VIBRATION TESTS
10
CONTENTS - Continued
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5.1.2.5
TEST DOCUMENTATION
13
5.1.3
EXEMPTION.
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5.1.4
EXTENSION OF PREVIOUS TESTING
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5.1.4.1
EXTENSION DOCUMENTATION
14
5.1.5
ALIGNMENT CRITERIA
14
5.2
PROCEDURE II (TYPE II - INTERNALLY EXCITED VIBRATION)
14
5.2.1
BASIS OF ACCEPTABILITY
14
5.2.2
BALANCE PROCEDURE FOR RIGID ROTORS
15
5.2.2.1
BALANCING METHODS FOR RIGID ROTORS.
15
5.2.2.2
BALANCE LIMITS FOR RIGID ROTORS
15
5.2.3
BALANCE PROCEDURE FOR FLEXIBLE ROTORS
16
5.2.3.1
BALANCE LIMITS FOR FLEXIBLE ROTORS
16
5.2.3.2
VIBRATION TEST PROCEDURE..
16
5.3
ANALYSIS OF RESULTS
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5.3.1
PHYSICS OF FAILURE
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5.3.2
QUALIFICATION TESTS..
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5.3.3
OTHER TESTS
18
6.
REFERENCE/RELATED DOCUMENTS.
18
6.1
REFERENCED DOCUMENTS
18
6.2
RELATED DOCUMENTS..
18
FIGURES
FIGURE 528.1-1.
TYPE I ENVIRONMENTAL VIBRATION LIMITS (BLACK BARS REPRESENT A GRAPHICAL PRESENTATION OF TABLE 528.1-I EXPRESSED IN DISPLACEMENT, VELOCITY, AND ACCELERATION)
12
FIGURE 528.1-2.
VIBRATION ACCEPTANCE CRITERIA FOR TYPE II VIBRATION
16
FIGURE 528.1-3.
MINIMUM STATIC DEFLECTION OF MOUNTING FOR TYPE II VIBRATION TEST.
17
TABLES
TABLE 528.1-I.
VIBRATORY DISPLACEMENT OF ENVIRONMENTAL VIBRATION
11
TABLE 528.1-II.
DURATION OF ENDURANCE TEST IN A GIVEN ORTHOGONAL DIRECTION AT EACH TEST FREQUENCY
12
TABLE528.1-III.
VIBRATORY DISPLACEMENT OF ENVIRONMENTAL VIBRATION FOR MAST MOUNTED EQUIPMENT
13
TABLE 528.1-IV.
TYPES OF BALANCING
14
METHOD
528.1 ANNEX A IDENTIFYING RESPONSE PROMINENCES TO BE INCLUDED IN ENDURANCE TESTING
1.
SCOPE
A-1
2.
PROCEDURE
A-1
2.1
DETERMINING AND DISPLAYING TRANSMISSIBILITY
A-1
2.1.1
TRANSMISSIBILITY MAGNITUDES
A-1
2.1.2
TRANSMISSIBILITY AND FREQUENCY
A-1
2.2
IDENTIFYING RESPONSE PROMINENCES
A-1
2.3
SELECTING ENDURANCE TEST FREQUENCIES
A-2
2.3.1
NON-RESPONSE PROMINENCE FREQUENCIES WHERE FUNCTIONAL OR STRUCTURAL INTEGRITY IS AFFECTED
A-2
MIL-STD-810H METHOD
528.1 CONTENTS - Continued
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2.3.2
FREQUENCIES WHERE RESPONSE PROMINENCES HAVE BEEN IDENTIFIED..
(TYPE I – ENVIRONMENTAL AND TYPE II – INTERNALLY EXCITED)
NOTE: This Method incorporates the requirements of MIL-STD-167-1A and additional lessons learned. This method shall be considered a requirement for US Navy vessels, and guidance for other applications.
528.1 ANNEX A METHOD 528.1, ANNEX A IDENTIFYING RESPONSE PROMINENCES TO BE INCLUDED IN ENDURANCE TESTING
528.1 ANNEX A
528.1 ANNEX B
(8) Alternative test amplitudes (see paragraph 5.1.2.4.5 in the front part of this Method).
(9) Whether approval is required for selection of frequencies used for endurance testing (see paragraphs 5.1.2.4.6 and 5.1.2.4.7 in the front part of this Method).
(10) The acceptance authority for the test report and any other approval items (see paragraphs 5.1.2.5.1 and 5.1.2.5.2 in the front part of this Method).
g. Type II:
(1) Special vibration and balance requirements (see paragraph 5.2 in the front part of this Method).
(2) Whether dynamic balance is required for machinery rated at lower than 150 rpm (see paragraph 5.2.2.1 in the front part of this Method).
(3) Balance quality grade (see paragraph 5.2.2.2 in the front part of this Method).
(4) Whether vibration acceptance criteria of Figure 528.1B-2 are specified for equipment with rigid rotors (see paragraph 5.2.2.2 in the front part of this Method).
(5) When required, methods of mounting test items for test (see paragraph 5.2.3.2.1 in the front part of this Method).