BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI - Universitatea ...

92 Iustina Elena Rotman et al
be confronted to the standards or to the contractual technical documentations to
establish if they are admissible, inadmissible or remediable [2]. In many cases
some influences can be neglected without to exceeding the measure limits
prescribed in the technical documentation [2], [4]. This presume the exactly
knowledge of the influence factors and of the results interpretation mode.
2. Method of Investigation
2.1. The Ultrasonic Testing Method
Performing the non-destructive control with ultrasound effectuation consist
principally in transmitting ultrasound signals (waves), produced by a waves
generator, through the examined pieces [2], [3]. The ultrasounds signals are
reflected by any surface and by any defect from the interior of the piece [1]-[5]
that was exposed to testing, see fig.1.
Fig. 1 – The ultrasonic testing method [5] Fig. 2 – The geometry examination [2]
The ultrasonic equipment used in this research is presented in the table
below:
USM
35X
Table 1
The necessary instruments of control US
Device Transducer Piece Coupled
USLT
2000
Reference
model: B2S
Aluminum bare
Ø 90 x 318 mm
Axle OL47
Ø 900 x 1500mm
2.1.1. The analysis of the investigation. Often in industrial practice there
are problems of interpreting the image obtained on the screen investigation
device. This paper presents an experimental study over the determination of the
divergence marginal effect and the elimination of disturbances in order to obtain
a correct examination and interpretation. Its objective is to highlight the journey
Oil