In this study the effect of some roll forming parameters of channel section are investigated on the edge longitudinal strain and bow defect of products.
To prevent these phenomena, defect analysis of product according to the change of injection velocity is carried out and optimal injection velocity for high quality product is proposed and simulated.
The step stress test was originally used in ERT to detect the working limits and defects of products.
In this study, the filling behavior and various defects of products were observed, and microstructures and mechanical properties were investigated along with parameters such as pressure and die temperature.
The optimization process is performed, with the springback angle as the objective function and maximum edge membrane longitudinal strains as constrain condition so as to assure the high forming accuracy and minimum roll stands for efficiency, and also eliminate the edge wave defects of products.
A large number of workers, mainly women, are employed in the light-on test process to detect the defects of products.
Even in the case of products for which we have the most stringent of safety rules, such as prescription medicines and motor vehicles, we hear recurring reports of manufacturing defects and of product recalls.
The epistemologist looks the now impressed sociologist directly in the eye, saying: if these examples do not delete in your mind the very notion of the supposed relevancy of the process es) to assess the qualities – or defects – of a product, we'll be very disappointed… ☹.
The computer analysis method allows predicting final shapes and defects of the products through simulation and efficiently manufacturing the products.
Therefore, it is important to manage design defect during all stages of product development to improve product design quality and product development success rate.
