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[China]
Trade Verify
Address: 101, 201 Building A and 301 Building C, Juji Industrial Park, Yabianxueziwei Shajing Street, Baoan District, Shenzhen, 518000, China
Contact name:Edison Xia
Shenzhen LCS Compliance Testing Laboratory Ltd. |
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Verified Suppliers
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Three comprehensive tests
Project Introduction
The three-combined test is a comprehensive test that simultaneously
applies three environmental stresses: temperature + humidity +
vibration. The effect of the comprehensive environment can more
truly and realistically reflect the performance of the product in
on-site use, and can better expose the defects of the product.
Applying a single environmental stress to a product can trigger
product failure, and applying three different environmental
stresses to a product can easily achieve an acceleration effect of
3-5 times. At the same time, by combining different environmental
stresses, faults that cannot occur when individual stresses are
applied can be induced.
When conducting a comprehensive test in which three stresses of
temperature, humidity, and vibration are applied simultaneously,
from the perspective of the mechanism of failure, the interior of
the product undergoing temperature cycling will expand and contract
due to the difference in material expansion coefficient, and the
joint will become loose. At this time, if Humidity and moisture
will invade from the gaps, reducing the friction coefficient of the
joints and connections. If vibration stress is applied, the
resonance phenomenon of the product will still occur relative to a
specific frequency. Through the repeated process of movement,
moisture absorption, freezing, and resonance, it is possible for
new failure modes to appear (caused by the greatly accelerated
single factor failure mode and the combined superposition effect of
the three factors).
Application scope
Three comprehensive tests of temperature, humidity and vibration
are widely used in complete machines and parts of aviation,
aerospace, military, electrical, electronic and other products.
Three comprehensive tests are indispensable and important test
methods for the entire process of product and material development,
prototype testing, and product qualification testing.
method standards
Three comprehensive test standard references: GB/T2423.35,
GB/T2423.36, IEC/EN60068-2-50; IEC/EN60068-2-51.
