The results of ferrography tests and their evaluation

Abstract

This paper disciisses ways of applying inatlzematical iizetliods to evaliiate the rcsiilts of tribodiagnostics (ferrograpliy) rela ted to vehicle engines. The idea is based on a discrirninative analysis wlziclz makes it possible to describe one qiialitafive paranietcr; e.g., tlic cornplex technical sfate of the engine, by means of sezieral qiiantifatizie paraincfcrs, e.8.. the quantity of diagnosed wear particles in irsed oil. The resitlts have beeri verified iisirig statistical dafa from triick and aiifornobile engines.Keywords discrim in at ive analysis, cii rren t wen r, 1 imi t wear, crit ical wear, lam ilia r part ides ,

Instrumental methods in the diagnostics of special vehicle drive

“…As an example, a signature method has been selected -it is based on the recognition of objects, events, or processes by using a set of numbers describing the properties of the object. Technical state patterns are given by n-dimensional vectors of numerical values of diagnostic quantities recorded in different parts of a diagnosed object at the same time [9,10]. In matrix form the technical state pattern is defined by a column vector…”

“…Two methods can be used for particle analysis, either feroscopic or ferodenzimetric method. Example of cutting wear particle is in Figure 8 [9]. The entry area where the oil touches the glass for the first time is approximately 56 mm from the outlet where it leaves the drain tube.…”

Wear particle classification using genetic programming evolved features

“…Some agencies and scholars have studied the relationship between characteristic wear particles and the wear state of machinery. Lloyds Register of Shipping, Nippon Kaiji Kyokai, and other international classification agencies have done much work to monitor the wear state of marine diesel engines . G. P. Stachowiak et al developed a texture‐based classification method to classify adhesive wear particles and abrasive wear particles .…”