| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in which a pressure applied by a mandrel used in producing a composite structure is uneven and difficult to control, by providing a mandrel capable of applying a constant pressure along the entire length of the mandrel.SOLUTION: A mandrel 10 has: a shape memory alloy (SMA) shell 103 having a longitudinal axis L, an interior extending along the longitudinal axis L and an exterior contour, the SMA shell 103 being configured to interact with a structure 102 to be cured; and at least one SMA actuation member 104 disposed within the interior and connected to the SMA shell 103, where the at least one SMA actuation member 104 is configured to exert a pressure against the SMA shell 103 effecting an interaction pressure between the exterior contour of the SMA shell 103 and the structure 102 to be cured, where the exterior contour has a predetermined actuated shape that corresponds to a predetermined cured shape of the structure 102 to be cured.SELECTED DRAWING: Figure 2 |
