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Apparatus and method for ultrasonic processing of laminates

A lamination and ultrasonic technology, applied in the field of ultrasonic treatment, can solve the problems of inability to compensate for changes, sub-standard quality of laminations, etc., and achieve the effect of reducing time

Active Publication Date: 2007-11-14
BELL HELICOPTER TEXTRON INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional ultrasonic welding processes cannot compensate for process variations that can result in sub-standard quality of welded laminates
[0008] While there are several known procedures for ultrasonically treating laminated materials, there is still a lot of room for improvement

Method used

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  • Apparatus and method for ultrasonic processing of laminates
  • Apparatus and method for ultrasonic processing of laminates
  • Apparatus and method for ultrasonic processing of laminates

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Embodiment Construction

[0034] This application claims U.S. Provisional Application No. 60 / 617,288, entitled "Ultrasonic Reduction of Volume of Composite Laminates," filed October 8, 2004, and "U.S. Priority to Provisional Application No. 60 / 664,106, "Development of Technology for Size Reduction," the entire contents of which are hereby incorporated by reference.

[0035] Exemplary embodiments of the present invention will be described below. In the interest of clarity, not all features of an actual implementation are described in this specification. Of course, it should be understood that in the development of any actual embodiment, various implementation-specific changes need to be considered in order to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, which are implemented in various implementations. The examples are different. Also, it should be appreciated that such improvement efforts might be complex and time-consuming, but thos...

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Abstract

A method for ultrasonic debulking a composite laminate includes the steps of defining a path across the laminate, the path having a starting location and an ending location and applying a force to and transmitting ultrasonic vibration into the laminate along the path, beginning at the starting location and ending at the ending location. The method further includes determining a temperature of a surface of the laminate proximate to the path and varying at least one of an amplitude of the ultrasonic vibration, the applied force, a feed rate at which the force and the ultrasonic vibration are applied along the path, an angle at which the ultrasonic vibration is applied to the laminate, and an interval at which plies of the laminate are processed, based upon the determined temperature of the surface of the laminate.

Description

technical field [0001] The present invention relates to ultrasonic treatment of laminates. In particular, the present invention relates to apparatus and methods for ultrasonically debulking or welding laminates. Background technique [0002] Laminates are widely used in many fields, such as aerospace. Laminates include polymer composite laminates, such as thermoplastic and thermoset composite laminates, and metal laminates. Such thermoset composites are used in many cases in structures where the quality of the material is a key factor. For example, it is desirable to eliminate air trapped in the unhardened composite laminate prior to hardening or setting. [0003] Generally, fabricating polymer composites requires infusing a polymeric resin into a volume surrounding a plurality of fibers, forming layers or plies of fibers disposed in a resin matrix. Typically, the infusion process is completed first, and then multiple layers or plies are assembled or "laminated" into ass...

Claims

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Application Information

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IPC IPC(8): B32B37/00
Inventor 爱德华·W·李阿夫拉哈姆·贝纳塔戴维·格雷韦尔
Owner BELL HELICOPTER TEXTRON INC
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