Study on the Accelerated Life Test for Durability of Irrigation Microsprayer

Abstract

The test time, the time the failure occurred, and the service life of microsprayers of accelerated life tests are analyzed and compared with those of normal life tests on the basis of the life distribution and parameters determined by the test date. The feasibility of adopting an accelerated life test to improve the efficiency and durability of microsprayers is investigated accordingly. The testing time in the normal life test can be shortened by approximately 50% using the accelerated life test; the relative error in the service life estimation between the two tests is 1%–11%, and the relative error of the average service life estimation is 5% at different confidence levels. The estimation of the service life of a microsprayer obtained from the accelerated life test can substitute the result of the normal life test for reducing the test time under the condition of the error tolerance of the distribution parameters.