NDLI: Simultaneous Measurement of Effective Chemical Shrinkage and Modulus Evolutions During Polymerization

Content Provider	Springer Nature Link
Author	Wang, Y. Woodworth, L. Han, B.
Copyright Year	2010
Abstract	A novel method is proposed to simultaneously measure the effective chemical shrinkage and modulus evolutions of advanced polymers during polymerization. The method utilizes glass fiber Bragg grating (FBG) sensors. They are embedded in two uncured cylindrical polymer specimens with different configurations and the Bragg wavelength (BW) shifts are continuously documented during the polymerization process. A theoretical relationship is derived between the BW shifts and the evolution properties, and an inverse numerical procedure to determine the properties from the BW shifts is established. Extensive numerical analyses are conducted to provide general guidelines for selecting an optimum combination of the two specimen configurations. The method is implemented for a high-temperature curing thermosetting polymer. Validity of the proposed method is corroborated by two independent verification experiments: a self-consistency test to verify the measurement accuracy of raw data and a warpage measurement test of a bi-material strip to verify the accuracy of evolution properties.
Starting Page	1155
Ending Page	1169
Page Count	15
File Format	PDF
ISSN	00144851
Journal	Experimental Mechanics
Volume Number	51
Issue Number	7
e-ISSN	17412765
Language	English
Publisher	Springer US
Publisher Date	2010-10-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Effective chemical shrinkage Elastic modulus Evolution Fiber Bragg grating Gelation point Continuum Mechanics and Mechanics of Materials Optics, Optoelectronics, Plasmonics and Optical Devices Vibration, Dynamical Systems, Control Characterization and Evaluation of Materials Mechanics Structural Mechanics
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering Aerospace Engineering

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