Inverse experiment INDEX

Usually the pressure or temperature only has been used to make the PMS index. However, the state of resin in the mold is a function of pressure and temperature. Therefore, it is necessary to make a new index including pressure and temperature effects. In order to find a proper form of the index, the PVT (pressure - specific volume - temperature) relationship was analyzed for the material used in the experiment. From the Tate equation for the material, the specific volume was calculated along the pressure and temperature range appeared in the experiment as shown in Fig. 7. The temperature is proportional to the specific volume, and the pressure is reciprocally proportional. The part weight has an inverse relationship with the specific volume. Therefore, new form of the index may be proportional to pressure and reciprocally proportional to temperature. In order to rqiresait pressure and temperature, the peak value or integral form can be selected. 

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