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In-situ measurement and numerical simulation of resin pressure during Glass/Epoxy prepreg composite manufacturing

Ammasai Sengodan, G; Maheshwari, M; Joshi, SC; Chen, Z; Asundi, AK; Tjin, SC

Authors

M Maheshwari

SC Joshi

Z Chen

AK Asundi

SC Tjin



Abstract

Resin pressure distribution of a curing Glass/Epoxy prepreg lay-up is the key parameter that controls the strength, stiffness and void nucleation of the cured composite part. It is vital to monitor and control the resin movement of curing laminate to optimize its quality in any manufacturing process. In this paper, design of a Fiber Bragg grating (FBG) based device, capable of measuring in-situ resin pressure of a curing lay-up is presented. This device uses the principle of differential pressure in liquids. The device was calibrated using a water column, and a pressure sensitivity of 1.636 × 10−2 MPa−1 was yielded. FBG responds linearly with the rise of hydrostatic pressure in the water column. An excellent agreement was found between experimental and theoretical results. This device was used to monitor the resin pressure in a curing prepreg composite lay-up. The measured liquid resin pressures were also compared to the resin pressure obtained from a coupled multi-physics numerical simulation. The presented sensor is useful for in-situ pressure measurements, especially for high temperature and low or zero bleed curing of composites, for example, out of autoclave curing.

Citation

Ammasai Sengodan, G., Maheshwari, M., Joshi, S., Chen, Z., Asundi, A., & Tjin, S. (2016). In-situ measurement and numerical simulation of resin pressure during Glass/Epoxy prepreg composite manufacturing. Measurement, 94, 505-514. https://doi.org/10.1016/j.measurement.2016.08.028

Journal Article Type Article
Acceptance Date Aug 25, 2016
Online Publication Date Sep 6, 2016
Publication Date Sep 6, 2016
Deposit Date Sep 28, 2022
Journal Measurement
Print ISSN 1536-6367
Publisher Routledge
Volume 94
Pages 505-514
DOI https://doi.org/10.1016/j.measurement.2016.08.028
Publisher URL https://doi.org/10.1016/j.measurement.2016.08.028