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  Mechanical Testing
 

TEMPERATURE

The temperature tests are performed to determine if objects can operate normally under various temperature conditions, such as high and low temperature, temperature cycling, and temperature shock.

 

HIGH TEMPERATURE

High temperature testing evaluates the effect of high temperature conditions on material safety, integrity, and performance. High temperature testing may be used to evaluate time-dependent performance degradation effects that occur during constant exposure to high temperatures.

 

LOW TEMPERATURE

Low temperature testing evaluates the effect of low temperature conditions on material safety, integrity, and performance. Low temperature testing may be used to evaluate time-dependent performance degradation effects that occur during constant exposure to low temperatures.

 

TEMPERATURE CYCLING

The test is conducted for the purpose of determining the effect on a part of repeated cyclic exposures to extremes of high and low temperatures for comparatively short periods of time. It may or may not be required that the specimens reach thermal stability at the temperature of the test chamber during the short exposure time specified. Permanent changes in operating characteristics and physical damage produced during temperature cycling result principally from variations in dimensions and other physical property degradation produced during temperature cycling.

 

TEMPERATURE SHOCK

This test is conducted to determine the resistance of a part to a sudden exposure at extremes of high or low temperatures, and to the shock of alternate exposures to these extremes, such as would be experienced when equipment or parts are transferred to and from heated shelters in arctic areas. The conditions may also be encountered in equipment operated non-continuously in low-temperature areas or during transportation. Permanent changes in operating characteristics and physical damage produced during thermal shock result principally from variations in dimensions and other physical properties.

Temperature testing is specified in the following:

MIL-PRF-27, MIL-T-27, MIL-STD-202, MIL-STD-210, MIL-STD-454, MIL-J-641, MIL-STD-705, MIL-STD-750, MIL-STD-781, MIL-STD-798, MIL-STD-810, MIL-I-983, MIL-STD-1344, MIL-STD-2036, MIL-STD-3885, MIL-S-3928, MIL-E-5272, MIL-E-5400, MIL-T-5422, MIL-P-7788, MIL-F-7872, MIL-V-7899, MIL-T-7928, MIL-M-7969, MIL-A-8064, MIL-K-8144, MIL-R-8236, MIL-C-8384, MIL-E-8595, MIL-F-8615, MIL-S-8805, MIL-V-8813, MIL-B-8942, MIL-G-10228, MIL-C-11015, MIL-R-11050, MIL-R-11539, MIL-I-11804, MIL-I-11867, MIL-R-12934, MIL-R-13312, MIL-C-13486, MIL-F-13926, MIL-C-14409, MIL-C-14806, MIL-C-15024, MIL-A-15303, MIL-T-15514, MIL-F-15733, MIL-H-16313, MIL-F-16377, MIL-E-16400, MIL-R-16999, MIL-M-17060, MIL-T-17275, MIL-T-17301, MIL-V-17360, MIL-V-17547, MIL-V-17639, MIL-P-17840, MIL-V-18110, MIL-F-18327, MIL-T-18404, MIL-R-18546, MIL-H-18766, MIL-F-18870, MIL-V-19068, MIL-E-19100, MIL-S-19500, MIL-R-19648, MIL-I-20037, MIL-S-20708, MIL-R-21098, MIL-D-21625, MIL-S-22432, MIL-V-22687, MIL-D-22706, MIL-R-22732, MIL-B-23071, MIL-C-23200, MIL-B-23306, MIL-B-23398, MIL-D-23615, MIL-A-23806, MIL-A-23836, MIL-L-23886, MIL-P-23928, MIL-P-24041, MIL-L-24223, MIL-C-24308, MIL-P-24423, MIL-V-24509, MIL-T-28800, MIL-E-39029, MIL-C-48497, MIL-H-83511, MIL-S-008834, MIL-T-0014358, SAE J-2031, UL-213, UL-1203, ASTM E-644-91, ASTM D832-64, ASTM F1387-99, NEMA 250-1997, SCL-7695, SCL-7722, RTCA/DO-160, UL-427, UL-471, UL-472, UL-560, UL-583, UL-588, UL-606, UL-681, UL-698, UL-1203, TR-NWT-000063, TA-NWT-000487, ASTM D-1053-92, GR-487-CORE, NAVMAT P-9492

 

TEMPERATURE, HUMIDITY, VIBRATION, AND ALTITUDE (COMBINED)

The test determines the combined effects of temperature, humidity, vibration, and altitude on airborne electronic and electro-mechanical material with regard to safety, integrity, and performance during ground and flight operations. Some portions of this test may apply to ground vehicles, as well.

Temperature, Humidity, Vibration, and Altitude testing is specified in the following:

MIL-STD-810

 

 



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