Title

Rejuvenate an Old Tinius Olsen Machine with Computer Data Acquisition Using its Existing Hardware and LabVIEW

Document Type

Article

Publication Date

2008

Publication Source

Computer Applications in Engineering Education

Volume

16

Issue

3

Inclusive pages

165-171

DOI

10.1002/cae.20136

Publisher

John Wiley & Sons, Inc.

Place of Publication

United States

ISBN/ISSN

1061-3773

Abstract

An innovative approach to integrate computer data acquisition to an old Tinius Olsen machine is described. The upgrade utilized the existing hardware of the Tinius Olsen machine and National Instruments data acquisition hardware and LabVIEW software. A potentiometer that is geared to the dial servo gives the signal for load applied, while an LVDT based extensometer provides the signal for elongation of the specimen. The potentiometer output and the extensometer output were first calibrated against the load and elongation, respectively. These two signals were then hooked up directly to the data acquisition hardware and a LabVIEW program was written to process the signals and generate the real time stress-strain curve. The data can also be stored in a computer file for later processing of the stress-strain curve. The upgrade of this machine used pre-existing equipments and was accomplished with zero cost to the engineering department at Indiana University-Purdue University Fort Wayne.

Keywords

data acquisition, LabVIEW, mechanics laboratory

Disciplines

Engineering

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