Run-In


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Related to Run-In: Run-in period

Run-In

 

the first stage in the operation of a technical device, usually characterized by a level of reliability lower than that demonstrated during the period of normal operation. The lower level of reliability is seen in failures of the device caused by hidden defects, such as those resulting from errors in manufacture or assembly and installation.

During the run-in, devices that have failed and are not repairable are replaced; otherwise, defects are either eliminated by repair, or they may disappear by themselves as a result of changes in the dimensions and shapes of interacting parts. These changes are caused by mutual adaptation of the parts as they wear. Many devices are run in either totally or partially before they begin operation. The duration of the run-in depends on the physical properties of the parts and materials in the device.

References in periodicals archive ?
TWO of the leading riders at the racecourses with the longest run-ins yesterday welcomed the rule that will restrict them to five strikes of the whip after the final jump, stating that it will encourage the "art of jockeyship".
The Borklunds have had more than their share of run-ins with criminals because of their work at a gasoline station.
But his efforts usually involved run-ins with the disciplinarian prison warden Mr Mackay, and the easily swayed Mr Barrowclough.
His generally nonconformist way of life led to run-ins with the authorities; he spent time in prison and in psychiatric institutions, and, in the early '70s, abandoned his studio after destroying a number of his own works.
Most of the time, we are oblivious to these mycological run-ins and suffer no ill effect from them.
Despite occasional run-ins with state politicians over funding inequities and a lack of community support, Barnes continued to lay the academic success groundwork.
The story follows Tom as he adjusts to life on the streets: eating from dumpsters, sleeping under bridges, run-ins with gangs, showering at the bus station.
A recent survey of children of offenders by the Corrections Association of New York found that 41 percent of teenagers had been suspended from school and 31 percent had run-ins with the police.
Along the way, he befriends infamous roughneck John Dillinger, has run-ins with the KKK and loses a leg.
He really does treat us to accounts of his problems finding decent office space in Manhattan, his run-ins with copy editors, and his troubles with publicists and how he got back at them.
I wonder how many people listen elsewhere for the fluttering of the Spirit's wings after run-ins with quality-control officers operating in our churches.
Bassett, who had a number of run-ins with the front-man last season, added: "Once again Pierre's lack of self control has sur- faced in the form of these comments.