Abstract: According to the immature testing methods of the current high-strength tubular composite materials, the article elucidates two testing methods of tensile strength for carbon fiber composite materials: the sampling stretching method and the whole stretch method. The two testing methods were separately used for both big diameter tubes and small diameter tubes. Through researching and experimenting on specimen production methods, the author developed a special grip for overall tensile testing, while also verifying the feasibility and superiority of the grip by experiments. Thereby breaking through the bottleneck of clamping difficulty with the high-strength tubular composite strength test.

Key words: tubular composite materials, tensile strength, overall tensile, grip, prototype system