In-situ monitoring of product shrinkage during injection molding using an optical sensor

1999 ◽  
Vol 39 (9) ◽  
pp. 1619-1627 ◽  
Author(s):  
Charles L. Thomas ◽  
Anthony J. Bur
Keyword(s):  
Injection Molding ◽  
Optical Sensor ◽  
In Situ Monitoring

Dielectric studies of PVDF crystallization. Application to in-situ monitoring in injection molding

2001 ◽  
Vol 8 (6) ◽  
pp. 911-916 ◽  
Author(s):  
J.M. Gonnet ◽  
J. Guillet ◽  
G. Boiteux ◽  
R. Fulchiron ◽  
G. Seytre
Keyword(s):  
Injection Molding ◽  
In Situ Monitoring ◽  
Dielectric Studies

scholarly journals Development of a Cost-Effective Optical Sensor for Continuous Monitoring of Turbidity and Suspended Particulate Matter in Marine Environment

Sensors ◽  
2019 ◽  
Vol 19 (20) ◽  
pp. 4439 ◽  
Author(s):  
T. Matos ◽  
C. L. Faria ◽  
M. S. Martins ◽  
Renato Henriques ◽  
P. A. Gomes ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
Optical Sensor ◽  
Dynamic Range ◽  
Cost Effective ◽  
In Situ Monitoring ◽  
Suspended Particulate Matter Concentration ◽  
Inorganic Matter ◽  
Suspended Particulate

A cost-effective optical sensor for continuous in-situ monitoring of turbidity and suspended particulate matter concentration (SPM), with a production cost in raw materials less than 20 €, is presented for marine or fluvial applications. The sensor uses an infrared LED and three photodetectors with three different positions related to the light source—135º, 90º and 0º—resulting in three different types of light detection: backscattering, nephelometry and transmitted light, respectively. This design allows monitoring in any type of environment, offering a wide dynamic range and accuracy for low and high turbidity or SPM values. An ultraviolet emitter–receiver pair is also used to differentiate organic and inorganic matter through the differences in absorption at different wavelengths. The optical transducers are built in a watertight structure with a radial configuration where a printed circuit board with the electronic signal coupling is assembled. An in-lab calibration of the sensor was made to establish a relation between suspended particulate matter (SPM) or the turbidity (NTU) to the photodetectors’ electrical output value in Volts. Two different sizes of seashore sand were used (180 µm and 350 µm) to evaluate the particle size susceptibility. The sensor was tested in a fluvial environment to evaluate SPM change during sediment transport caused by rain, and a real test of 22 days continuous in-situ monitoring was realized to evaluate its performance in a tidal area. The monitoring results were analysed, showing the SPM change during tidal cycles as well as the influence of the external light and biofouling problems.

scholarly journals Development of an electrochemical sensor for in-situ monitoring of reactive species produced by cold physical plasma

2021 ◽  
Vol 326 ◽  
pp. 129007
Author(s):  
Zahra Nasri ◽  
Giuliana Bruno ◽  
Sander Bekeschus ◽  
Klaus-Dieter Weltmann ◽  
Thomas von Woedtke ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Reactive Species ◽  
In Situ Monitoring ◽  
Physical Plasma

In Situ Monitoring of Polaron Localization and Cell Activity with Charge Accumulation Spectroscopy

2021 ◽  
pp. 2105799
Author(s):  
Yu Zhang ◽  
Li Yang ◽  
Jintao Wang ◽  
Wangying Xu ◽  
Qiming Zeng ◽  
...  
Keyword(s):  
Cell Activity ◽  
In Situ Monitoring ◽  
Charge Accumulation
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