This paper presents an approach that adopts the use of computer technology, vibration sensor, and signal processing theory for the condition monitoring of rotating machinery. In this work, a virtual instrument based on LabVIEW was developed to acquires and analyses vibrations of a test rig of rotating machinery. The test rig consists of an AC induction motor, a pulley-belt system and a shaftrotor system that were assembled. Vibrations of the test rig are measured by using micro-electro-mechanical system (MEMS)-based accelerometers. The measured vibrations are acquired in the time domain and are analyzed in the frequency domain by using the developed virtual instrument. In general results of this experiment are shown that the developed virtual instrument able to acquires and analyses the vibrations of the test rig.

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The purpose of this research is to provide an overview of the effect of the initial angle of cut and depth of cut on the edge wear of the HSS chisel in the wear resistant steel cutting process using a scrap machine. This research was conducted using the KLOPP brand scrap machine, Type 550, Machine Code SC 01, Cutting speed (V) 15 m / min, Feeding motion (f) 0.4 mm / step, cutting time 5 minutes, using HSS Bohler scrap chisel Rapid Extra 1200 (3/8 "X 4") with variations in the initial angle of cutting (λ) 50 , 150, 250 and variations in the depth of cut (a) 0.4 mm, 0.8 mm and 1.2 mm. The results showed that an increase in the initial angle of cut and depth of cut tended to result in an increase in the edge wear of the HSS chisel.

The purpose of this study is to provide an overview of the effect of the side rake angle in the medium carbon steel flat turning process on the flank wear of the HSS cutting tool. This research was conducted using a PL 1000 lathe, cutting speed (Vc) 24 m/min, cutting depth 0.25 mm, feeding motion 0.26 mm/r, using an HSS cutting tool with side rake angle variations (γo) 120, 180, 250. Flank wear was measured using the Toolmaker Microscope with an accuracy of 0.005 mm, a clearance of 25 mm, and a magnification of 15 times. The results showed that the increase in side rake angle in the medium carbon steel flat lathe process tended to result in an increase in the flank wear of the HSS cutting tool. The large side cutting angle (250) has the highest wear value of 0.55 mm. The lowest wear value occurs at an angle of 120 with a wear of 0.49 mm.

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