چهاردهمین کنفرانس تخصصی و بین المللی پایش وضعیت و عیب یابی با حضور شرکت ویستا پایش راد در تاریخ سه شنبه ۲۸ مرداد ۱۳۹۹، به صورت مجازی برگزار شد خواهد بود. محل برگزاری این کنفرانس دانشگاه صنعتی شریف (سامانه کلاسهای مجازی) بود که در ابتدا با ارائه معرفی شرکت و محصولات و خدمات شرکت توسط مهندس جهان شاهلو همراه بود. پس از ایشان آنتوان آزوتوف از شرکت همکار در کشور روسیه ارائه ای خدمت حاضرین کنفرانس انجام دادند.

Vibration Analysis

Even in good condition, machines generate vibrations. Many such vibrations are directly
linked to periodic events in the machine’s operation, such as rotating shafts, meshing gearteeth,
rotating electric fields, and so on. The frequency with which such events repeat often gives
a direct indication of the source and thus many powerful diagnostic techniques are based on
frequency analysis. Some vibrations are due to events that are not completely phase locked
to shaft rotations, such as combustion in IC (internal combustion) engines, but where a fixed
number of combustion events occur each engine cycle, even though not completely repeatable.
As will be seen, this can even be an advantage, as it allows such phenomena to be separated
from perfectly periodic ones.

چهاردهمین کنفرانس پایش وضعیت و عیب یابی

Other vibrations are linked to fluid flow, as in pumps and gas
turbines, and these also have particular, quite often unique, characteristics. The term ‘vibration’
can be interpreted in different ways, however, and one of the purposes of this chapter is to
clarify the differences between them and the various transducers used to convert the vibration
into electrical signals that can be recorded and analysed.
One immediate difference is between the absolute vibration of a machine housing and the
relative vibration between a shaft and the housing, in particular where the bearing separating
the two is a fluid film or journal bearing.