Study on bursting properties of interior fabric of automobiles roof

In order to solve the problem of testing two-dimensional plane extended property to characterize the formability of automobiles roof interior fabric,the INSTRON5967 type universal material testing machine was employed to test the top stretching deformation of warp knitted napped fabric,pile composite fabric and sponge composite fabric. The geometric models of the top length and the top deformation rate were established. It calculated the top stretching deformation rate under different top tensities. The top stretching deformation rate was used to evaluate the three-dimensional formability of car roof interior fabric under a constant force. The results indicate the top stretching deformation rate of pile fabric is bigger than pile composite fabric,the sponges ceiling composite fabrics are superior to the fleece kind which shows the three-dimensional formability of sponges is stronger,and the pile composite fabrics formability remains to be improved.