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Title: Non Linear Prognostic Analysis of Fastener Joints for Structural Health Monitoring Applications
Researcher: Chikmath Lokmanya
Guide(s): B Dattaguru
Keywords: aircraft components, lug joints, Structural Health Monitoring (SHM) and Damage Tolerance design
University: Jain University
Completed Date: 07/08/2018
Abstract: Large scale structures such as aircraft components are often made in parts and joined. This newlinemakes the joints to play a vital role in connecting the components, of design significance in newlinemaintaining structural integrity and also provide easyway for assembly and dis-assembly. newlineAmong various types of joinery, lug joints are most commonly used in connecting primary newlinecomponents of aircraft where the prime motto is to act as primary load carrying members by newlinetransferring the large load across different components. Generally rivets or bolted joints kind newlineof fasteners are preferred in these metallic lug - joint structures since they offer less newlinecomplexity in assembly and dis-assembly. The health of these lug joints with fasteners is of newlineparamount concern since their failure can result in a catastrophe thus drawing the newlineconsiderable attention over the years. Hence to ensure their structural integrity, Structural newlineHealth Monitoring (SHM) and Damage Tolerance design conceptshave become mandatory to newlineachieve the safety of the aircraft. newlineThe lug joints with fasteners could be of interference, clearance or push fits with pin diameter newlinegreater than, smaller than or equal to that of hole diameter of the lug joint. These lug joints newlinedue to their geometry and loads they experience during operations, develop stress newlineconcentrations at the critical locations. With further usage and fatigue loading on them leads newlineto encounter stress singularities such as crack initiation and crack growth at the critical newlinelocations which may lead to the failure of the lug joints. The failure of lug joints can lead to a newlinedisaster since they typically find their application in joining wing-root fitting to the fuselage, newlinemounting the under-carriage connections to the wing, in helicopter rotor fittings and many newlinemore. Such failures are not acceptable from flight safety point of view and in the recent years newlinethere is increasing emphasis on SHM at such locations. newlineSHM is a novel approach wherein the structure is monitored either continuously or newlineintermittently and the health of
Pagination: 147 p.
Appears in Departments:Aerospace engineering

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01.title page.pdfAttached File99.29 kBAdobe PDFView/Open
02.declaration.pdf22.31 kBAdobe PDFView/Open
03.certificate.pdf22.1 kBAdobe PDFView/Open
04.acknowledgements.pdf32.3 kBAdobe PDFView/Open
05.abstract.pdf34.99 kBAdobe PDFView/Open
06.table of contents.pdf36.86 kBAdobe PDFView/Open
07.list of figures, tables and abbreviations.pdf82.74 kBAdobe PDFView/Open
08.chapter 1.pdf2.68 MBAdobe PDFView/Open
09.chapter 2.pdf5.23 MBAdobe PDFView/Open
10.chapter 3.pdf3.5 MBAdobe PDFView/Open
11.chapter 4.pdf3.45 MBAdobe PDFView/Open
12.chapter 5.pdf5.36 MBAdobe PDFView/Open
13.chapter 6.pdf59.77 kBAdobe PDFView/Open
14.references.pdf45.75 kBAdobe PDFView/Open

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