MIL-DTL-87104C
4.6.3.1.3 Accept-reject criteria (see 3.5.2.1). The coaxial assembly shall meet the accept-reject criteria specified in
the applicable detail specification.
4.6.3.2 Tensile load test (see 3.5.2.2). The tensile load test shall determine the mechanical strength and electrical
stability of the cable component to connector component junction of a coaxial assembly. This test simulates the
longitudinal forces that may be applied during in-service and maintenance periods.
4.6.3.2.1 Test setup.
4.6.3.2.1.1 Apparatus. The test apparatus shall include the following:
a.
Linear actuator. The linear actuator shall provide a means of applying and maintaining the required in-line
force.
b.
Force measurement. Spring scales or other appropriate means of measuring in-line force without
introducing harmonic motion into the system shall be required. Accuracy of the test equipment shall be
±5 pounds, or better.
c.
Movable support. Movable support shall provide a surface which will allow free horizontal motion (less than
0.1 pound drag) when vertical loads up to ten pounds are applied.
d.
Connector clamp. The connector clamp shall provide for uniform distribution of the applied force about the
circumference of the connector component and shall not interfere with electrical test equipment connection.
e.
Fixed support. Fixed support shall be capable of sustaining the test system without flexing during the
application of the in-line force.
4.6.3.2.1.2 Test conditions. Test shall be conducted under room ambient conditions (see 4.3.1.1) and as specified
herein.
4.6.3.2.2 Procedure.
a.
The assembly shall be subjected to examination of product, procedure II (see 4.6.1.2); VSWR, procedure II
b.
The assembly shall be mounted in the tensile load test fixture and the required electrical test equipment
shall be connected.
c.
The test sample shall be subjected to 5 straight in-line pulls. The duration of maximum stress shall be for
5 seconds for the first four in-line pulls. The fifth in-line pull shall be maintained while the tests specified in
d.
The assembly shall be removed from the test fixture and the tests specified in 4.6.1.2, 4.6.2.1.2, and
4.6.3.2.3 Accept-reject criteria (see 3.5.2.2). If the assembly fails at any time to meet the accept-reject criteria
established in 4.6.1.2.2, 4.6.2.1.2.5, 4.6.2.3.2.1 and 4.6.2.3.3.1, the test sample shall be considered to have failed the
tensile load test.
4.6.3.3 Torque test (see 3.5.2.3). The torque test shall determine the electrical and mechanical integrity of the
junction between the cable and connector components of coaxial assembly when they are subjected to the simulated
rotational forces that may be encountered during in-service and maintenance periods.
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