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Study of Knock Sensors as Low-Cost Alternatives to Acoustic Emission Sensors
(2020-06-01)
The real-time monitoring of manufacturing processes is essential to achieve high-quality standards and uniformity at reduced costs. The monitoring of machining processes is usually performed by acoustic emission sensors, ...
A Low-Cost Acoustic Emission Sensor Based on Piezoelectric Diaphragm
(2020-08-15)
Sensor monitoring is widely used in modern industrial automation. Industries require efficient and cost-effective monitoring and control systems. Regarding monitoring, new low-cost piezoelectric sensors have been tested ...
A Comparative Analysis Applied to the Partial Discharges Identification in Dry-Type Transformers by Hall and Acoustic Emission Sensors
(2022-03-01)
Dry-type insulated transformers stand out for their higher applicability in substations, high-voltage instrumentation systems, and electrical installations. In this machine, the insulation system is constituted of dielectric ...
Study of the Use of Piezoelectric Diaphragm as a Low-Cost Alternative to the Acoustic Emission Sensor in Dressing Operation of Aluminum Oxide Wheels
(2021-08-15)
Acoustic emission (AE) sensors have been widely used for tool condition monitoring in the grinding process. Recently, the piezoelectric diaphragm (piezoelectric buzzer) was introduced as a low-cost alternative for the same ...
A low cost system for acoustic monitoring of partial discharge in power transformer by piezeletic sensor
(2016-07-01)
Partial discharge damages in power transformers require high cost monitoring procedures based on corrective maintenance or even interruptions of the power system. The development of online non-invasive monitoring systems ...
In-Dressing Acoustic Map by Low-Cost Piezoelectric Transducer
(Ieee-inst Electrical Electronics Engineers Inc, 2020-08-01)
The main difficulty in the grinding process is to identify the correct moment to dress the grinding wheel. Therefore, the cutting tool (grinding wheel) must be monitored. In this context, an innovative technique was developed ...
Lead zirconate titanate/polyurethane (PZT/PU) composite for acoustic emission sensors
(2001-01-01)
Piezoelectric composite, made from ferroelectric ceramic lead zirconate titanate (PZT) and vegetable based polyurethane (PU) polymer, was doped with a semiconductor filler, graphite. The resulting composite (PZT/C/PU) with ...
Neural network approach for surface roughness prediction in surface grinding
(2007-12-01)
Several systems are currently tested in order to obtain a feasible and safe method for automation and control of grinding process. This work aims to predict the surface roughness of the parts of SAE 1020 steel ground in a ...