Sunday, April 06, 2014

TCR Engineering in Mumbai conducted a two day intensive training course titled " Vacuum Infusion Processing & Fracture Toughness of Polymer Matrix Composites" on March 4-5, 2014

About the Course

High performance void free polymer matrix composites with consistent wall thickness, optimum resin to reinforcement ratio, minimum part shrinkage and distortion can be produced by vacuum infusion process.
This process is an improvement in the hand lay-up process and Vacuum Bagging processes that result in resin rich composites of variable performance.
Vacuum Infusion processing is based on the principle of vacuum bagging unlike the limited  pot life in Vacuum Bagging, the Vacuum Infusion offers unlimited set up time.
Here Vacuum Bag is used to suck excess resin from the laminate, that results in less wasted resin, thus it is a cost effective process. Parts constructed by VIP almost achieve pre-preg level of resin content.
The Vacuum Infusion currently being used for  manufacturing parts where high specific strength and stiffness, better interior finish, faster cycle time at lower cost is required.
During construction of PMCs, innumerable sites for initiation of defects such as voids, delamination etc. are produced.
Non destructive evaluation of composite damages are estimated with the help of NDT methods like ultrasonic “C” scan , X-ray radiography etc. because they effect the mechanical properties of material.
The life expectancy of composite structure requires a clear understanding of the material’s response to the growth of interlaminar and translaminar delamination. Hence fracture toughness determination plays a crucial role for application of composites in high end products such as wind turbine blades.

Course Coverage

The topics planned to be covered are :

Hands on training on VIP and Hand lay-up processes to manufacture composite laminates.

Comparison between composites manufactured by Hand lay-up and Vacuum Infusion processes.

NDT analysis for understanding the reasons behind variations in properties.

Tensile Strength Testing(ASTM D638).

Translaminar Fracture Toughness Testing as per (ASTM E1922).

Interlaminar Fracture Toughness as per (ASTM D5528).

Interlaminar Shear Strength as per (ASTM D2344).

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