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Book Determination of Significant Composite Processing Factors by Designed Experiment Msfc Center Director s Discretionary Fund

Download or read book Determination of Significant Composite Processing Factors by Designed Experiment Msfc Center Director s Discretionary Fund written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: To determie composite material properties' effects from porcessing variables, a 3 factorial designed experiment with two replicates was conducted. The factors were cure method (oven versus autoclave), layup (hand versus tape-laying machine), and thickness (8 versus 52 ply). Four material systems were tested: AS4/3501-6, IM7/8551-7, IM7/F655 bismaleimide (BMI), and shear tests on IM7/F584. Material properties were G(sub 12), v(sub 12), E(sub 1c) and E(sub 2c). Since the samples were necessarily nonstandard, strengths, though recorded, cannot be considered valid. Void content was also compared. Autoclave curing helped material properties for the low modulus fiber material but showed little benefit for higher stiffness fibers. The number of plies was very important for epoxy composites but not for the BMI. E(sub 1) was generally unaffected by any factor. Particularly high void content did correlate to reduced properties. Autoclave curing reduced void content over oven curiing but a moderate amount of voids, less than 1 percent void content, didnot correlate with material properties. Oven cures and hand layups can produce high-quality parts. Part thickness of epoxy composites is important, though cure optimization may improve performance. Significant variations can be caused by processing and it is important that test coupons always reflect the layup and processes of the final part.Finckenor, J. L.Marshall Space Flight CenterCOMPOSITE MATERIALS; MECHANICAL PROPERTIES; MANUFACTURING; EXPERIMENT DESIGN; FACTORIALS; STIFFNESS; THICKNESS; AUTOCLAVES; SHEAR PROPERTIES; PLY ORIENTATION; LAY-UP; REGRESSION ANALYSIS; BISMALEIMIDE; MODULUS OF ELASTICITY

Book FY 1998 Scientific and Technical Reports Articles Papers and Presentations

Download or read book FY 1998 Scientific and Technical Reports Articles Papers and Presentations written by and published by . This book was released on 1999 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book NASA Technical Memorandum

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1963 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Process Comparison Study MSFC Center Director s Discretionary Fund CDDF

Download or read book Process Comparison Study MSFC Center Director s Discretionary Fund CDDF written by and published by . This book was released on 1992 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Degradation Factor Approach for Impacted Composite Structural Assessment MSFC Center Director s Discretionary Fund Final Report Project No 96 17

Download or read book Degradation Factor Approach for Impacted Composite Structural Assessment MSFC Center Director s Discretionary Fund Final Report Project No 96 17 written by R. Ortega and published by . This book was released on 2000 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Scientific and Technical Aerospace Reports

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Government reports annual index

Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Commerce Business Daily

Download or read book Commerce Business Daily written by and published by . This book was released on 1998-05 with total page 1902 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book FY 1999 Scientific and Technical Reports Articles Papers and Presentations

Download or read book FY 1999 Scientific and Technical Reports Articles Papers and Presentations written by J.oyce E.Turner Waits and published by . This book was released on 2000 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Monthly Catalogue United States Public Documents

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1995 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Government Reports Announcements Index

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1991-03 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Monthly Catalog of United States Government Publications

Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1991 with total page 1434 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

Book Innovation Key to the Future

Download or read book Innovation Key to the Future written by and published by . This book was released on 1992 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: