Hygrothermal conditining of Glass Epoxy and Carbon Epoxy composite specimens used for Hanssa-3 Program (for generation of hotwet allowables by SID)

Rao, RMVGK and Kavitha, and Srihari, Shylaja and Vanaja, A (1996) Hygrothermal conditining of Glass Epoxy and Carbon Epoxy composite specimens used for Hanssa-3 Program (for generation of hotwet allowables by SID). Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

Considering the requirements projected by DGCA for obtaining the much needed data on Hot-wet allowables, several composite specimens were subjected to different humidity and temperature environments. This report presents the details of such hygrothemal conditioning and the moisture absorption characteristics of BID (GFRP) and UD (CFRP) specimens all fabricated with 1 65 +i- 3% fibre weight hction using the room temperature curing LY SO52 (Epoxy) system and a / vaccum bag moulding process. Specimens were edge coated and step post cured (50°C for 1/2 hr, 70°C 1 for 1 hr and 85OC for 2 hrs.) and were exposed to different sets of Temperature and percentage Relative humidity conditions(45OC / 95 % RH) using environmental chamber available at the FRP-PP. As per the DGCA suggestions the specimens saturated at 45T/ 95 YoRK were subsequently furnished to Structural Integrated Division (SID),NAL for generating test data on Hot-wet means and design allowables.

Item Type: Monograph (Project Report)
Uncontrolled Keywords: Resin, Reiaforcement, Test laminate, Test specimen, DGCA, BID Glass cloth, Environmental conditioning.
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Users 10 not found.
Date Deposited: 07 Mar 2012 04:14
Last Modified: 09 Oct 2015 05:11
URI: http://nal-ir.nal.res.in/id/eprint/10360

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