Balluff provides highly accelerated life testing
A
Balluff product story
Edited by the Engineeringtalk editorial team
Oct 21, 2009
Balluff routinely subjects its sensors and linear displacement systems to Halt (highly accelerated life test) testing at the company's testing facility.
The components are subjected to an accelerated 'ageing process' within three to five days, thereby simulating the total of all load conditions within the life of a sensor in time-lapse fashion.
Possible weak points can thereby be reliably detected and corrected as early as the development phase.
The result, according to Balluff, is sensors that perform their duty over years with consistent dependability and precision.
Their use increases long-term system uptime, minimises service and repair events and provides greater efficiency, claims the company.
In a Halt test, the sample is subjected to ever increasing mechanical, thermal and combined loads at precisely defined intervals until it fails.
This time lapse indicates the function and destruction limits of the product, thereby enabling the design team to greatly extend the final product's life expectancy before failure.
Information about long-term behaviour is gathered, with greater reliability than the final result compared with conventional testing for product qualification within specifications.
The Balluff test fixture, 230cm x 164cm x 227cm (H x W x D) provides suitable conditions for such testing.
With a temperature range of -100C to +200C and a temperature change speed of 70K/min, significant thermal stress is produced.
The rapid cooling of the testing chamber air is accomplished using liquid nitrogen.
Vibration is produced on a testing table 106cm x 106cm, which is vibrated using nine pneumatic cylinders.
Vibrations with three linear and rotary degrees of freedom of up to 50g in a frequency range of 1Hz to 10,000Hz are generated.
Balluff also offers testing in the Halt facility as a contracted service.
Halt testing is standard practice in the aircraft industry and is also used in the automotive industry and many major manufacturers.
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