Identifying Structurally Significant Items Using Matrix Reanalysis Techniques

Identifying Structurally Significant Items Using Matrix Reanalysis Techniques

Bibliographic Details
Main Author: Kable, Bhushan M.
Language:English
Published: Wright State University / OhioLINK 2009
Subjects:
Aerospace Materials
Design
Engineering
Industrial Engineering
Mechanical Engineering
severity
vulnerability
reliability
reanalysis
significant
risk
matrix
FMECA
FMEA
DFMEA
stiffness matrix
Nastran
Abaqus
code
Matlab
sensitivity
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=wright1261417678
id ndltd-OhioLink-oai-etd.ohiolink.edu-wright1261417678
record_format oai_dc
spelling ndltd-OhioLink-oai-etd.ohiolink.edu-wright12614176782021-08-03T06:16:58Z Identifying Structurally Significant Items Using Matrix Reanalysis Techniques Kable, Bhushan M. Aerospace Materials Design Engineering Industrial Engineering Mechanical Engineering severity vulnerability reliability reanalysis significant risk matrix FMECA FMEA DFMEA stiffness matrix Nastran Abaqus code Matlab sensitivity <p>Knowledge of critical structural items for an aircraft structural system is crucial for any risk integrated design and maintenance procedure. These critical items are those whose failure can cause catastrophic damage to the entire structure or result in loss of availability. For example, failure of the fuselage longeron of an F-15 aircraft resulted in the separation of the aircraft cockpit from the rest of the structure, resulting in a complete loss of the aircraft. This is clearly a critical structural item that was identified during the design process but did not have appropriate design, manufacturing, or maintenance controls that could have prevented the accident through early detection of manufacturing flaws. While this failure is catastrophic, there can be other damage scenarios that are not catastrophic but they could lower aircraft availability due to maintenance and repair requirements. </p><p>Moreover, these critical structural items can be in areas of the aircraft that require extensive teardown in order to assess their condition. Therefore, along with the criticality of the structural failure, the location of the component also becomes important. In this research, Failure Modes Effects and Criticality Analysis (FMECA) will be used to integrate, event criticality, event frequency, and damage detection capability into one metric. This process enables integration of structural sizing and maintenance planning to minimize the operational cost while maximizing the aircraft availability. This process can also be used to quantify the impact of structural health monitoring system on the overall risk of failure of the structure.</p><p>In this research, a Boeing 707 lower wing skin with stiffeners is used to demonstrate the process of developing an FMECA procedure for structural systems. In order to make this process applicable for large scale systems efficient structural re-analysis methods that minimize the analysis cost are also implemented. This FMECA process can be used to develop design, manufacturing, and maintenance controls that ensure quality and health of the critical structural items.</p> 2009-12-28 English text Wright State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=wright1261417678 http://rave.ohiolink.edu/etdc/view?acc_num=wright1261417678 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Aerospace Materials
Design
Engineering
Industrial Engineering
Mechanical Engineering
severity
vulnerability
reliability
reanalysis
significant
risk
matrix
FMECA
FMEA
DFMEA
stiffness matrix
Nastran
Abaqus
code
Matlab
sensitivity
spellingShingle Aerospace Materials
Design
Engineering
Industrial Engineering
Mechanical Engineering
severity
vulnerability
reliability
reanalysis
significant
risk
matrix
FMECA
FMEA
DFMEA
stiffness matrix
Nastran
Abaqus
code
Matlab
sensitivity
Kable, Bhushan M.
Identifying Structurally Significant Items Using Matrix Reanalysis Techniques
author Kable, Bhushan M.
author_facet Kable, Bhushan M.
author_sort Kable, Bhushan M.
title Identifying Structurally Significant Items Using Matrix Reanalysis Techniques
title_short Identifying Structurally Significant Items Using Matrix Reanalysis Techniques
title_full Identifying Structurally Significant Items Using Matrix Reanalysis Techniques
title_fullStr Identifying Structurally Significant Items Using Matrix Reanalysis Techniques
title_full_unstemmed Identifying Structurally Significant Items Using Matrix Reanalysis Techniques
title_sort identifying structurally significant items using matrix reanalysis techniques
publisher Wright State University / OhioLINK
publishDate 2009
url http://rave.ohiolink.edu/etdc/view?acc_num=wright1261417678
work_keys_str_mv AT kablebhushanm identifyingstructurallysignificantitemsusingmatrixreanalysistechniques
_version_ 1719434044045787136

Similar Items