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Design/analysis of the jwst isim bonded joints for survivability at cryogenic temperatures (Document No: 20050214411)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kaprielian Sr., Charles Kunt, Cengiz Bartoszyk, Andrew Kuhn, Jonathan Young, Daniel Johnston, John Rodini,Benjamin |
| Copyright Year | 1990 |
| Description | A major design and analysis challenge for the JWST ISIM structure is thermal survivability of metal/composite bonded joints below the cryogenic temperature of 30K (-405 F). Current bonded joint concepts include internal invar plug fittings, external saddle titanium/invar fittings and composite gusset/clip joints all bonded to M55J/954-6 and T300/954-6 hybrid composite tubes (75mm square). Analytical experience and design work done on metal/composite bonded joints at temperatures below that of liquid nitrogen are limited and important analysis tools, material properties, and failure criteria for composites at cryogenic temperatures are sparse in the literature. Increasing this challenge is the difficulty in testing for these required tools and properties at cryogenic temperatures. To gain confidence in analyzing and designing the ISIM joints, a comprehensive joint development test program has been planned and is currently running. The test program is designed to produce required analytical tools and develop a composite failure criterion for bonded joint strengths at cryogenic temperatures. Finite element analysis is used to design simple test coupons that simulate anticipated stress states in the flight joints; subsequently the test results are used to correlate the analysis technique for the final design of the bonded joints. In this work, we present an overview of the analysis and test methodology, current results, and working joint designs based on developed techniques and properties. |
| File Size | 14349147 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20050214411 |
| Archival Resource Key | ark:/13960/t5p89633t |
| Language | English |
| Publisher Date | 1990-01-08 |
| Access Restriction | Open |
| Subject Keyword | Bonded Joints Design Analysis Systems Integration Cryogenic Temperature Finite Element Method James Webb Space Telescope Composite Materials Adhesives Simulation Failure Analysis Liquid Nitrogen Guidance Sensors Trusses Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
