METHOD FOR TREATING UNIDIRECTIONAL COMPOSITION MATERIAL Russian patent published in 1994 - IPC

FIELD: metal working. SUBSTANCE: semifinished material is loaded at a constant speed to a point causing a stress of σ < σ_b- Δσ in the specimen where σ_b - average value of ultimate strength of composition material in the armoring direction; where S - root mean square deviation when determining the ultimate strength of composition material in armoring direction; t_str -Student's coefficient; n - number of tested specimens during determination of σ_b with concurrent recording of "load-absolute elongation" diagram followed by unloading the specimen. Loading and unloading are repeated to the point when the loading curve gets aligned with unloading curve. EFFECT: higher mechanical characteristics of unidirectional composition material under tension in the armoring direction with concurrent determination of these characteristics. 1 dwg