Journal ArticleDOI
Acoustic Emission Signal Analysis for Tool Condition Monitoring in Microturning of Titanium Alloy
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TLDR
In this article, an online acoustic emission (AE) monitoring system is developed, to investigate the effect of tool wear during the microturning of titanium alloy with a tungsten carbide insert of nose radius 0.1 mm.Abstract:
In this work, an online acoustic emission (AE) monitoring system is developed, to investigate the effect of tool wear during the microturning of titanium alloy with a tungsten carbide insert of nose radius 0.1 mm. The AE signal parameters were analyzed in time domain, frequency domain and discrete wavelet transformation (DWT) techniques to correlate with the tool wear status. The root mean square (AERMS) and specific AE energies are also computed for the decomposed AE signals, using the DWT. The results demonstrated that dominant frequency and DWT techniques are found to be most suitable for online tool condition monitoring, using AE sensors in the microturning of titanium alloy.read more
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Journal ArticleDOI
FEM simulation and acoustic emission based characterization of chip segmentation frequency in machining of Ti-6Al-4V
Frederik Zanger,Andreas Kacaras,Matthias Bächle,Markus Schwabe,Fernando Puente León,Volker Schulze +5 more
TL;DR: In this paper, the influence of cutting speed and tool wear on cutting force, chip segmentation frequency, and residual stress state for Ti-6Al-4V was investigated, and acoustic emissions, measured by a piezoelectric sensor adapted to the tool shank, were analyzed to extract chip segmentsation frequency in-process using timefrequency representations and periodograms.
Studies On The Effect Of Different Nose Radius In Micro Turning Of Stainless Steel 316l
TL;DR: In this article, the effect of different tool nose radii on tool wear, surface roughness, chip morphology, signals acquired from different sensor such as Acoustic Emission (AE), accelerometer and cutting force dynamometer in micro turning of stainless steel (SS 316L).
References
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Journal ArticleDOI
Titanium alloys and their machinability—a review
Emmanuel O. Ezugwu,Z. M. Wang +1 more
TL;DR: In this article, the main problems associated with the machining of titanium as well as tool wear and the mechanisms responsible for tool failure are discussed. But no equivalent development has been made for cutting titanium alloys due primarily to their peculiar characteristics.
Journal ArticleDOI
A brief review: acoustic emission method for tool wear monitoring during turning
TL;DR: A review of acoustic emission (AE)-based tool wear monitoring in turning is presented in this article, where the main contents included: 1. AE generation in metal cutting processes, AE signal classification, and AE signal correction, and 2. AE signal processing with various methodologies, including time series analysis, FFT, wavelet transform, etc.
Journal ArticleDOI
Three-Dimensional Micromachining by Machine Tools
TL;DR: In this article, the state-of-the-art machining technologies for three-dimensional microproducts are summarized by focusing on the methods using tools, and promising methods for machining convex and concave shapes are introduced and discussed with respect to their state of the art.
Journal ArticleDOI
Precision manufacturing process monitoring with acoustic emission
TL;DR: The unique requirements of monitoring of precision manufacturing processes, and the suitability of acoustic emission (AE) as a monitoring technique at the precision scale are discussed.
Journal ArticleDOI
Tool-based micro-machining
TL;DR: In this article, a tool-based micro-machining technology is developed to produce miniaturized parts and features using a multi-purpose miniature machine tool for hybrid processes which is developed at NUS.
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