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In-situ stress monitoring during direct material deposition process

  • US 6,553,275 B1
  • Filed: 03/10/2000
  • Issued: 04/22/2003
  • Est. Priority Date: 03/11/1999
  • Status: Expired due to Term
First Claim
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1. A method of fabricating a product, comprising the steps of:

  • a) using a laser-aided, computer-controlled direct material deposition system to fabricate the product on a substrate by depositing successive layers having a height;

    b) measuring the strain with sensors in real-time during material deposition;

    c) inputting the strain into a computer program to calculate the real-time stress accumulation; and

    d) adjusting the material deposition process to control residual stress accumulation.

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