Increasing the torque transducer sensitivity of an RPA 2000 by a factor 5-10 using advanced data acquisition

• Type: Article in International Scientific Journal
• Date: 2004

Authors

Loic Hilliou (Author) FEUP; D. van Dusschoten (Author) Other; M. Wilhelm (Author) Other; H. Burhin (Author) Other; E. R. Rodger (Author) Other

Journal

Title: Rubber Chemistry and Technology

Vol. 77 No. 1

Pages: 192-200

ISSN: 0035-9475

Publisher: American Chemical Society

Scientific classification

FOS: Engineering and technology

Other information

DOI: 10.5254/1.3547811

Abstract (EN): The sensitivity of an RPA 2000 under oscillatory shear conditions can be extended by a factor of 5 – 10 into the low torque region. This increases the overall dynamic range of this robust industrial instrument to 5 decades. This dynamic range is close to that of rheometers used in academic environments. This increased sensitivity is not a result of mechanical improvement, but the result of an advanced, but straight forward, data treatment of the raw torque transducer output in the time domain using “on the fly” averaging. This method is possible through the availability of modern ADC-cards. The underlying ideas of this averaging procedure, together with experimental verification on polyethylene are described in detail.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9