Effect of Annealing Treatments on Electrical Resistivity of Polycrystalline Constantan Foil under Cycle Loading

A unique feature of the electrical resistance accumulation property of cyclically deformed polycrystalline constantan foil can be directly used to develop the fatigue life gauge. However, the intermediate annealing heat treatment during the cold rolling process of foil forming has a significant effe...

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Bibliographic Details
Published in:Experimental mechanics 2012-10, Vol.52 (8), p.1223-1228
Main Authors: Ren, W-X., Xiao, D., Chen, G-W.
Format: Article
Language:English
Subjects:
Applied sciences
Biomedical Engineering and Bioengineering
Characterization and Evaluation of Materials
Control
Dynamical Systems
Engineering
Exact sciences and technology
Forming
Fracture mechanics (crack, fatigue, damage...)
Fundamental areas of phenomenology (including applications)
Lasers
Measurement and testing methods
Mechanical engineering. Machine design
Metals. Metallurgy
Optical Devices
Optics
Photonics
Physics
Production techniques
Rolling
Solid Mechanics
Structural and continuum mechanics
Vibration
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Summary:A unique feature of the electrical resistance accumulation property of cyclically deformed polycrystalline constantan foil can be directly used to develop the fatigue life gauge. However, the intermediate annealing heat treatment during the cold rolling process of foil forming has a significant effect on the cumulative electrical resistivity of foil. Based on the orthogonal experiment design, in this paper, 4 kinds of polycrystalline constantan foils have been prepared by combining different levels of annealing temperature and time. Through a series of fatigue experiments carried out in the laboratory, it is demonstrated that the foil electrical resistance accumulation rate increases with the increase in the annealing temperature while the electrical resistance accumulation rate decreases with the increase in the annealing time. Subsequently, the optimal annealing temperature and time have been achieved.
ISSN:0014-4851
1741-2765
DOI:10.1007/s11340-011-9578-9