Environmental reliability testing can help to predict future behavior during the complete life cycle of the product, component or material under test. In combination with the measurement of relevant parameters and the use of appropriate analytical methods, it is also possible to identify failure modes.
Environmental testing simulates different combinations of temperature, humidity and atmospheric pressure. It includes temperature testing, temperature and humidity testing, thermal cycling/shock testing, and altitude (low air pressure) testing.
Outdoor and industrial environmental testing simulates different conditions of contact with sand, dust, rain, water, chemicals, exposure to solar and UV radiation, and potential corrosion by liquids or gases.
In cases where environmental reliability testing leads to unacceptable degradation or failure, identification of the root cause can enable design or material changes in order achieve the desired lifetime or performance.
- High/Low temperature (-100°C to 300°C)
- Temperature & humidity (0°C to 100° (<<5%RH to 100%RH)
- Power Temperature Cycling (PTC) (change rate >10min)
- Thermal Cycling (-70°C to 150°C)
- Thermal Shock (cold -65°C and 0°C; warm 60°C and 200°C)
- Highly Accelerated Stress Test (HAST)/ Corrosion testing (between 105°C and 143°C; between 75 and 100%RH)
- Solar/UV simulation (Solar up to 1120 W/m2; UV test UV-A or UV-B)
- Corrosive gas exposure
* Optional in-situ testing is also available: Event detection (Low resistance), real time logging of current/voltage/resistance/lumen output (I/V/L/R vs. time) etc.
Highly Accelerated Lifetime Test (HALT)
HALT is an accelerated product reliability test method focused on finding design or component weaknesses in products. It helps to shorten the product development process and failures can be avoided in advance, before they become expensive field issues. With HALT a product is subject to a series of overstresses to accelerate fatigue in the parts, i.e. the samples are tested outside of the normal operating specifications. It is a test to the point of failure.
Multiple Environmental Over Stress Testing (MEOST)
MEOST is used to prove the robustness of your product before it goes to the market. It is a test method that stresses the product as far as possible beyond the design specification, but within the known destructive limits (defined with a HALT test). A combination of stresses is applied to create interactions that can lead to product failures. MEOST makes use of environmental stresses in combination with dynamic electrical in- and output parameters (input voltage, frequency, mains-dips, output current/load).
- Surface degradation (discoloration, change of texture, etc.)
- Chemical compatibility
- Gas exposure testing