A Servo-Control System for the Universal Panel Tester

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Volume 23, Issue 6 (November 1995)

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ISSN: 0090-3973
Page Count: 7

A Servo-Control System for the Universal Panel Tester
Hsu, TTC
Professor and research assistant, University of Houston, TX

Zhang, L-X
Professor and research assistant, University of Houston, TX

Gomez, T
Vice-president, Gardner System, Inc., CA

(Received 11 October 1994; accepted 26 June 1995)

Abstract

A servo-control system has been successfully installed on the universal panel tester to study the behavior of full-size reinforced concrete panel elements. In addition to the load-control procedure, this unique testing facility is now capable of testing panels using deformation-control procedure. This servo-control system controls up to ten different servo valves with independent programming capabilities and is thus suitable for many complex applications. By using this new servo control system we were able to determine, for the first time, some material properties of reinforced concrete, including Poisson ratios, the descending branch of compression stress-strain curves, as well as the characteristics of the compressive stress-strain curves of concrete in panels with 45° steel bars.

Keywords:
concrete, deformation control, high-strength concrete, load control, reinforced concrete, servo-control system, stress-strain curves, test facilities, universal panel tester

Paper ID: JTE11430J
DOI: 10.1520/JTE11430J
ASTM International is a member of CrossRef.

Author Title A Servo-Control System for the Universal Panel Tester Symposium , 0000-00-00 Committee C09

		Home Journals STPs Manuals Topics Subscriptions/Pricing Digital Library / Journals / Journal of Testing and Evaluation (JTE) / Citation Page Volume 23, Issue 6 (November 1995) Click here to download this paper now for $25 PDF (288K) View License Agreement ISSN: 0090-3973 Page Count: 7 A Servo-Control System for the Universal Panel Tester Hsu, TTC Professor and research assistant, University of Houston, TX Zhang, L-X Professor and research assistant, University of Houston, TX Gomez, T Vice-president, Gardner System, Inc., CA (Received 11 October 1994; accepted 26 June 1995) Abstract A servo-control system has been successfully installed on the universal panel tester to study the behavior of full-size reinforced concrete panel elements. In addition to the load-control procedure, this unique testing facility is now capable of testing panels using deformation-control procedure. This servo-control system controls up to ten different servo valves with independent programming capabilities and is thus suitable for many complex applications. By using this new servo control system we were able to determine, for the first time, some material properties of reinforced concrete, including Poisson ratios, the descending branch of compression stress-strain curves, as well as the characteristics of the compressive stress-strain curves of concrete in panels with 45° steel bars. Keywords: concrete, deformation control, high-strength concrete, load control, reinforced concrete, servo-control system, stress-strain curves, test facilities, universal panel tester Paper ID: JTE11430J DOI: 10.1520/JTE11430J ASTM International is a member of CrossRef. Author Title A Servo-Control System for the Universal Panel Tester Symposium , 0000-00-00 Committee C09