Please use this identifier to cite or link to this item: https://doi.org/10.1007/BF01233140
Title: Application of a modified strain transient dip test in the determination of the internal stresses of PVC under tension
Authors: Teoh, S.H. 
Chuan, C.L.
Poo, A.N. 
Issue Date: Apr-1987
Citation: Teoh, S.H., Chuan, C.L., Poo, A.N. (1987-04). Application of a modified strain transient dip test in the determination of the internal stresses of PVC under tension. Journal of Materials Science 22 (4) : 1397-1404. ScholarBank@NUS Repository. https://doi.org/10.1007/BF01233140
Abstract: A modified strain transient dip test which involves the design of a load reduction apparatus to perform rapid step unloading and extrapolating to zero extension rate has been developed to measure the internal stresses (recovery and effective stress) of PVC under uniaxial tension. This simple technique appears to be consistent with other internal stress measurement techniques. It was found that the effective stress approaches a limiting value with applied strain and an extrapolated yield point could be defined. The limiting value is a function of the strain rate during the initial load application. The general increase in applied stress (at fixed applied strain) with crosshead speed was attributed to the increase in magnitude of the effective stress. The maximum peak ratio of effective over recovery stress, at each crosshead speed, could indicate that it was the energy-dissipating part of the material that played a dominant role in the early stages of the deformation while the energy-storage part dominated the latter stages. © 1987 Chapman and Hall Ltd.
Source Title: Journal of Materials Science
URI: http://scholarbank.nus.edu.sg/handle/10635/57921
ISSN: 00222461
DOI: 10.1007/BF01233140
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