scholarly journals Quantitative verification of thin-film polyvinylidene fluoride (PVDF) transducer array performance up to 60 °C

2017 ◽  
Author(s):  
Christopher Hakoda ◽  
Baiyang Ren ◽  
Cliff J. Lissenden ◽  
Joseph L. Rose
Keyword(s):  
Thin Film ◽  
Polyvinylidene Fluoride ◽  
Transducer Array ◽  
Quantitative Verification ◽  
Array Performance

Thin-Film PVDF Sensor Based Monitoring of Cutting Forces in Peripheral End Milling

2012 ◽  
Author(s):  
Lei Ma ◽  
Shreyes N. Melkote ◽  
John B. Morehouse ◽  
James B. Castle ◽  
James W. Fonda ◽  
...  
Keyword(s):  
Thin Film ◽  
Polyvinylidene Fluoride ◽  
End Milling ◽  
Beam Theory ◽  
Dynamic Strain ◽  
Data Logging ◽  
Sensor Material ◽  
Sensor Module ◽  
Sensor Signals

A sensor module that integrates a thin film Polyvinylidene Fluoride (PVDF) piezoelectric strain sensor and an in situ data logging platform has been designed and implemented for monitoring of feed and transverse forces in the peripheral end milling process. The module, which is mounted on the tool shank, measures the dynamic strain(s) produced in the tool and logs the data into an on-board card for later retrieval. The close proximity between the signal source and the PVDF sensor(s) minimizes the attenuation and distortion of the signal along the transmitting path and provides high-fidelity signals. It also facilitates the employment of a first principles model based on Euler-Bernoulli beam theory and the constitutive equations of the piezoelectric sensor material to relate the in situ measured PVDF sensor signals to the feed and transverse forces acting on the tool. The PVDF sensor signals are found to compare well with the force signals measured by a platform type piezoelectric force dynamometer in peripheral end milling experiments.

scholarly journals Glucose Sensing Using Capacitive Biosensor Based on Polyvinylidene Fluoride Thin Film

Biosensors ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 12 ◽  
Author(s):  
Ambran Hartono ◽  
Edi Sanjaya ◽  
Ramli Ramli
Keyword(s):  
Thin Film ◽  
Polyvinylidene Fluoride ◽  
Glucose Sensing ◽  
Capacitive Biosensor

scholarly journals Cutting Forces Measurement for Milling Process by Using Working Tables with Integrated PVDF Thin-Film Sensors

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 4031 ◽  
Author(s):  
Ming Luo ◽  
Zenghui Chong ◽  
Dongsheng Liu
Keyword(s):  
Thin Film ◽  
Cutting Force ◽  
Cutting Forces ◽  
Polyvinylidene Fluoride ◽  
Force Measurement ◽  
Milling Process ◽  
Machining Process ◽  
Signal Spectrum ◽  
Milling Force ◽  
Thin Film Sensors

In the milling process, cutting forces contain key information about the machining process status in terms of workpiece quality and tool condition. On-line cutting force measurement is key for machining condition monitoring and machined surface quality assurance. This paper presents a novel instrumented working table with integrated polyvinylidene fluoride (PVDF) thin-film sensors, thus enabling the dynamic milling force measurement with compact structures. To achieve this, PVDF thin-film sensors are integrated into the working table to sense forces in different directions and the dedicated cutting force decoupling model is derived. A prototype instrumented working table is developed and validated. The validation demonstrates that profiles of the forces measured from the developed instrumented working table prototype and the dynamometer match well. Furthermore, the milling experiment results convey that the instrumented working table prototype could also identify the tool runout due to tool manufacturing or assembly errors, and the force signal spectrum analysis indicates that the developed working table can capture the tool passing frequency correctly, therefore, is suitable for the milling force measurement.

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