Experimental distribution of the corrugated hose fatigue strength

And the lognormal law and Ben6y of law consistent with a wide range of common fatigue test results say obey these laws does not contradict the month t '
As noted in the previous chapter, have a certain statistics Contact between the corrugated hose fatigue damage and stress, but significantly affected by the random nature of the dispersion (up to several orders of magnitude) 040.64). Figure 86 shows a relationship between the corrugated hose fatigue strength and stress. This figure, although a relatively wide dispersion zone, but still subject to the determined probability law. Research these laws can solve some of the problems in the calculation of the reliability index of the corrugated hose.
Although the results of the fatigue test is dispersed, but below it there is a limit, i.e. the sensitivity limit to the number of cycles n. Said. This N. Alternating load time non-sensitive region high pressure hydraulic fittings
Value Ig (N No) normal distribution law is known as the sensitivity limit of the log-normal law, it is taken as the fatigue strength of the true distribution law [49) in the use of this distribution law to determine the N . Can make use of the computer. In order to predict the reliability, in addition to the fatigue of the curved line (or regression line)hose adapters