accelerated aging factor calculation

An accelerated ageing test for medical devices is used to simulate real time shelf-life ageing, in order to validate shelf-life claims.

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In accelerated life tests, when a component has been tested for a number of hours under the stressed condition, we want to know the equivalent operation time at the use stress condition. This process is carried out according to guidelines given in ASTM F1980 - Standard Guide for Accelerated Ageing of Sterile Medical Device Packages. Please enable cookies on your browser and try again. This is logarithmic or accelerated aging.

A humidity factor to calculate the accelerated aging (AAT) is not applicable for accelerated aging Protocols. The service requires full JavaScript support in order to view this website.

ate – verb \ -ləˌrāt\ : to move faster : to gain speed – : to cause (something) to happen sooner or more quickly 2. This process is automatic. It is calculated by the following equation: Where: T AA: Accelerated aging temperature (o C) T RT: Ambient temperature (o C) Q 10: Rate of the chemical reaction, typically 2

4.5 When conducting accelerated aging programs for establishing expiry dating claims, it must be recognized that the data obtained from the study is based on conditions that simulate the effects of aging on the materials.

However, a stress at the use condition is usually random, so how can we calculate the equivalent acceleration factor for a random stress? Life - birth to death (Cradle to Grave!)

Unrealistic or extreme temperature and Conditions may be of interest in overall sterile barrier system performance. Please enable JavaScript on your browser and try again. www.evaluationengineering.com is using a security service for protection against online attacks. – the period from birth to death – the period of duration, usefulness, or popularity of something
The service requires full cookie support in order to view this website. Note that the aging factor of 1,521 corresponds to 10 years, while the aging factor of 1,541 corresponds to only six days of testing. As a result, the aging factor must be known for the expected life of the product, and this must be compared to the calculated accelerated-aging factor (Table 1).

www.evaluationengineering.com is using a security service for protection against online attacks. Accelerated aging factor: To be specified.

If the use stress is a constant value, this is easy to calculate. You will be redirected once the validation is complete. Temperature cycling testing is another method of accelerated life testing for products that are exposed to temperature variations during use in normal operation. However, this must be evaluated in a separate study and is not related to accelerated aging. The temperature variations can be a result of self heating for products that are repeatedly turned on and off, or can be the result of cyclic environmental changes — such as temperature variations from day to night — or other causes. Calculation of accelerated aging according to ASTM F 1980 Here you are able to calculate how long they have to perform at elevated temperature a storage tests to reflect the reality as closely as possible in the laboratory . Accelerated aging temperature: To be specified, but typically below 60 o C since higher temperature may induce nonlinear changes.

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