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首页> 外文会议>IMAC-XXI: a conference amp; exposition on structural dynamics >DAMAGE DIAGNOSIS AND PROGNOSIS FOR COMPOSITE PLATES
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DAMAGE DIAGNOSIS AND PROGNOSIS FOR COMPOSITE PLATES

机译：复合板的损伤诊断和预后

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摘要

This paper summarizes neural network analyses used tornconstruct metamodels needed in various stages of damagerndiagnosis and prognosis. The first step of this metamodelrnconstruction is to build neural networks that can predict thernimpact location and the impact kinetic energy from dynamicrnstrain measurements on a structure. The second networkrnevaluates the initial damage state from the previouslyrnestimated impact location and energy. Then, the futurerndamage state is predicted based on the initial/currentrndamage state and some measure of future loadingrncharacteristics. The content of this paper mainly focuses onrnthe first step of the metamodeling: impact sourcernidentification. The problem of the impact source identificationrnconsists of source localization and impact velocityrnidentification. Two separate neural networks are constructedrnfor each of the two steps. The effectiveness of the proposedrnmetamodeling is demonstrated using data generated fromrnimpact simulation of a finite element model of a compositernplate and experimental data measured during actual impactrntests of a composite plate.
机译：本文总结了神经网络分析方法，用于构建损伤诊断和预后各个阶段所需的元模型。这种元模型构建的第一步是建立神经网络，该神经网络可以根据结构上的动态应变测量预测冲击位置和冲击动能。第二网络根据先前重新确定的撞击位置和能量来评估初始损坏状态。然后，基于初始/当前损坏状态以及未来负荷特性的一些度量来预测未来损坏状态。本文的内容主要集中在元建模的第一步：影响源识别。冲击源识别的问题由声源定位和冲击速度识别组成。对于两个步骤中的每个步骤，都构建了两个单独的神经网络。利用从复合板有限元模型的冲击模拟生成的数据以及在复合板的实际冲击试验中测得的实验数据证明了所提出的元建模的有效性。

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  • 来源
  • 会议地点 Kissimmee FL(US)
  • 作者

    Amy N. Robertson; Hoon Sohn; Matthew T. Bement; Norman F.Hunter; Cheng Liu; Charles R. Farrar;

  • 作者单位

    Engineering Sciences and Applications DivisionrnWeapon Response GrouprnLos Alamos National LaboratoryrnLos Alamos, New Mexico 87545;

    Engineering Sciences and Applications DivisionrnWeapon Response GrouprnLos Alamos National LaboratoryrnLos Alamos, New Mexico 87545;

    Engineering Sciences and Applications DivisionrnWeapon Response GrouprnLos Alamos National LaboratoryrnLos Alamos, New Mexico 87545;

    Engineering Sciences and Applications DivisionrnWeapon Response GrouprnLos Alamos National LaboratoryrnLos Alamos, New Mexico 87545;

    Engineering Sciences and Applications DivisionrnWeapon Response GrouprnLos Alamos National LaboratoryrnLos Alamos, New Mexico 87545;

    Engineering Sciences and Applications DivisionrnWeapon Response GrouprnLos Alamos National LaboratoryrnLos Alamos, New Mexico 87545;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 结构力学;结构力学;
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