MIL-DTL-3100H
4.5.3 Tests. Samples selected in accordance with 4.5.1 shall be subjected to the
conformance tests specified in table III. One third of the wheel assemblies selected for the tests
shall undergo the 48-hour drum test (see 4.6.4.1), one third shall undergo the 6-hour drum test
(see 4.6.4.2), and one third shall undergo the adhesion test (see 4.6.5). No one wheel assembly
shall undergo more than one of these three tests.
4.6 Methods of inspection.
4.6.1 Materials and construction. Conformance to 3.2 through 3.2.3, 3.3 and 3.3.1 shall
be determined by inspection of contractor records providing proof or certification that materials
conform to requirements. Applicable records shall include drawings, specifications, design data,
receiving inspection records, processing and quality control standards, vendor catalogs and
certifications, industry standards, test reports, and rating data.
4.6.2 Defects. Conformance to 3.3, 3.6, 3.7 and 3.8 shall be determined by examination
for the defects listed in table IV. Examination shall be visual, tactile, or by measurement with
standard inspection equipment.
4.6.3 Physical and mechanical properties. To determine conformance to 3.4.1 tires shall
be tested in accordance with ASTM D1415 or ASTM D2240. To determine conformance
to 3.4.2, tires shall be tested in accordance with ASTM D573. A contractor's alternative test
method may be used provided that it is an accepted industry practice, that it is completely
described, and that it is approved by the Government.
4.6.3.1 Low temperature flexibility test. To determine conformance to 3.4.3, type B
specimens shall be subjected to the tests and specified in ASTM D2137, method A. Five
specimens shall be tested and inspected. In the event one specimen fails an additional five
specimens shall be prepared and tested. If two or more of the initial five, or any of the last five
specimens fail, it shall be cause for rejection.
4.6.4 Endurance test.
4.6.4.1 Forty-eight hour drum test. To determine conformance to 3.5.1.a, the wheel
assemblies shall be tested as follows.
4.6.4.1.1 Apparatus. The apparatus shall consist of a rotating steel drum having a
smooth, flat-faced rim. The wheel assemblies for testing shall be individually mounted so as to
apply test loads radially. The wheel assemblies shall turn freely. The steel drum shall have a
diameter of 67.23 +0.50 in. The width of the drum rim shall provide full contact with the tire
under the loads specified herein (see table I). The test shall be conducted in ambient air
temperature of 100 +5°F measured at the same height above the floor as the tires being tested.
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