Unlock instant, AI-driven research and patent intelligence for your innovation.

Apparatus and methods for shape memory alloy mandrels

A memory alloy and mandrel technology, which is applied in the field of mandrels for forming and solidifying structures, can solve problems such as uneven pressure and difficult control

Active Publication Date: 2019-11-29
THE BOEING CO
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pressure exerted by conventional mandrels can be uneven and difficult to control due to the nature of the chemical reaction
Where conventional mandrels are complex in shape and have non-uniform cross-sections, it may often be difficult to provide a constant pressure along the entire length of the mandrel as chemical reactions cause the mandrel to drive (see, for example, Figure 1C)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Apparatus and methods for shape memory alloy mandrels
  • Apparatus and methods for shape memory alloy mandrels
  • Apparatus and methods for shape memory alloy mandrels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the disclosed concepts, which may be practiced without some or all of these specific details. In other instances, details of well-known devices and / or procedures have been omitted to avoid unnecessarily obscuring the present disclosure. While some concepts are described in connection with particular examples, it should be understood that these examples are not intended as limiting. Note further that all numbers, temperatures, etc. are "about" and are provided for exemplary purposes only. All specific numbers, temperatures and any other specific information may be more or less or any suitable number or temperature.

[0027] Reference herein to "an example" or "an aspect" means that one or more features, structures, or characteristics described in connection with the example or aspect are included in at least one implementation. The phrases "an example" ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Apparatus and methods for a shape memory alloy mandrel are disclosed, and in one or more aspects of the invention, a mandrel (10) is disclosed. The mandrel (10) has a shape memory alloy (SMA) housing (103) having a longitudinal axis (L), inner and outer contours extending along the longitudinal axis (L), the SMA housing (103) being configured to engaged with the structure (102) to be cured, and at least one SMA drive member (104) disposed within the interior and connected to the SMA housing (103), wherein the at least one SMA drive member (104) is configured to abut the SMA housing (103) Apply pressure to apply bonding pressure (P1, P2, P3) between the outer contour of the SMA housing (103) and the structure to be cured (102), wherein the outer contour has a predetermined driving shape, the driving shape Corresponds to a predetermined curing shape of the structure (102) to be cured.

Description

technical field [0001] Aspects of the exemplary embodiments relate generally to mandrels for shaping solidified structures, and more particularly, to mandrels with shape memory alloy drivers. Background technique [0002] Mandrels are typically utilized when it is desired to shape manufactured products. The mandrel may be configured to form a cured and shaped product, such as a cured braided composite structure, thermoplastic, resin structure, or any other suitable or similar material. The mandrel can generally be configured to shape the material into a desired shape or configuration by providing drive against a rigid drive housing or molding on the material (eg, composite material) during the curing process. The pressure exerted by the mandrel against the composite material and drive housing or form may allow formation of a predetermined shape, geometry or configuration of the finished composite material. Currently, prior art mandrels employed in the forming of composite ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16C3/02
CPCB29C33/38B29C33/485B29C70/446B29K2905/00B29L2031/3076Y02T50/40B29C44/12B29C53/82C23F1/00B32B37/0046B32B37/18B32B37/1036B32B2605/18
Inventor M·肖恩S·阿普达尔哈列姆F·T·卡金W·M·阿什马维K·梅雷迪思
Owner THE BOEING CO