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Detect edge cracks

An edge crack, edge technology, applied in the direction of measuring device, using stable tension/pressure test material strength, instrument, etc., can solve problems such as cracking

Active Publication Date: 2018-07-13
MAGNA INTERNATIONAL INC
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Problems solved by technology

Therefore, if the metal sheet used for the metal surface of the car is too thin, the metal surface of the car may crack when it comes into contact

Method used

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Embodiment Construction

[0014] Finished products using sheet metal are manufactured by various manufacturing techniques. One such technique is to use dies to manipulate sheet metal to result in different shapes and sizes. Sheet metal dies allow sheet metal to apply pressure on sheet metal to cut, bend, stretch and manipulate sheet metal.

[0015] CAE programs can be used to simulate aspects of a finished product before it is produced. Therefore, a designer of a finished product can simulate the finished product via a CAE program. The finished product, as well as the materials used to manufacture the finished product, such as sheet metal, may be represented via mathematical and numerical parameters. For example, dimensions, composites, and densities can be attributed to the various materials used to manufacture the finished product.

[0016] Therefore, by using a CAE program, various situations can be analyzed predictively through the finished product. For example, if the finished product is made ...

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Abstract

A method and system for detecting edge cracks of a unit of a sheet metal product is provided. The method includes: calculating a first stress associated with a forming process using a first die; calculating a second stress associated with a finishing process using a second die; combining the first stress and the second stress to formulate the total stresses; simulate sheet metal products to generate baseline stresses; and compare total stresses to baseline stresses to determine whether elements predictively contain edge cracks.

Description

[0001] Cross References to Related Applications [0002] This PCT patent application claims priority to U.S. Provisional Patent Application No. 61 / 825,143, filed May 20, 2013, entitled "Detecting Edge Cracks," the entire disclosure of which is deemed to be the disclosure of this application part of and is incorporated herein by reference. Background technique [0003] Computer-aided design (CAD) allows the designer of a product to simulate the product based on various mathematical parameters. For example, when designing a product using CAD, the designer can be aware of various external factors or parameters using materials incorporated with the product. Computer Aided Engineering (CAE) uses these factors to simulate CAD models to subsequently determine whether a product will function in the intended manner. [0004] In the production of metal-based products that consist of sheet metal, various dies are used to create the finished product. Sheet metal dies allow machines to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D21/00B21D22/00G01N19/08
CPCG06F2113/24G06F30/23G06F30/15G06F30/20G06F2111/10G01N3/08G01N19/08
Inventor 托马斯·詹姆斯·厄特延斯托马斯·洛梅·沙特朗博里斯·舒利金
Owner MAGNA INTERNATIONAL INC
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