What's New
Last updated 5/08/2013
A new filament winding book, entitled "Composite Filament
Winding" has been written and is available at the ASM website,
http://www.asminternational.org/portal/site/www/store/storeAreaHome/?channelName=Technical%20books&displayChannelName=Books
and at Amazon. http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dstripbooks&field-keywords=Composite+Filament+Winding
Publisher is ASM (American Society of
Materials) The author has a limited number of copies at a reduced price
This
book adds to and builds on the information supplied by "Filament Winding, Composite
Structure Fabrication" published in 1992 and 1998. It differs from the
previous book because it principally adresses the automated filament winding area.
Here is the preface:
Preface to Composite Filament Winding
This
is the first contemporary book to treat filament winding with a focus
on automation. The purpose of this book is to provide detailed
procedures for automated filament winding for complex shapes, to
chronicle the progress that has been made in robotic filament winding
along with ancillary processes that support the deposition process It
is also to show what has and what can be done to advance the process
and science of low cost composite fabrication by filament winding. The
need for this book has been evident since the bulk of filament winding
machinery purchases now have a greater number of control axes and
substantial automation in ancillary operations, such as mandrel
removal, and cure (Ch. 2). There has also been a
geographical shift with the process. Literature searches have
shown that more professional papers now emerge from Canada, South Korea
and The Netherlands than from the United States. Investigators at
the Korea Advanced Institute of Science and Technology have developed
two new iterations of the STEB (Ch. 8)
This book builds on
three previous publications (1,2,3) and the many individual
publications and presentations of the authors of the present
work. The previous books (1,2) addressed mainly aerospace
applications and offered hands-on instructions for making components
using the rudimentary, by today’s standards, winders. Among other
areas, (3) presented geodetic and non-geodetic roving trajectories,
kinematics with collision control, and derived articulated
pressurizable structures.
Four of the nine chapters in
this book, (Chs.2,3,4,5), address automation directly. Now the
highest automation is used in the commercial arena, e.g pipes. The
kinds of structures that can be produced are shown in (Chs. 6 and 7).
Finally, Ch 9, addresses the actual processes of pressure vessel
analysis, fabrication and testing.
I want to dedicate this
book to two mentors and friends, Yuri Tarnopol’skii and Lowrie McLarty
who both gently prodded me to composite physical and mental activity
and who corrected some of my more glaring errors. I still hold
them in my memory. I would also like to acknowledge the excellent
editorial staff at ASM International. They were thoroughly
competent and professional and furthermore, easy to work with.
References
(1)(2)”Filament Winding, Composite Structure Fabrication” SAMPE Publishers, 1991,1999
(3) “Filament Winding, a Unified Approach” Sotiris Koussios, Delft University Press, 20
Composite Filament Winding
Table of Contents
S. T. Peters | Introduction and Overview |
John E. Green | Automated Filament Winding Systems |
Sotiris Koussios | Integral Design For Filament Winding: Materials, Winding Patterns and Roving Dimensions For Optimal Pressure Vessels |
A.P.Priestley | Programming Techniques and CAM & Simulation Software |
Sotiris Koussios | Fiber Trajectories on Shells of Revolution: An Engineering Approach |
J. Lowrie McLarty | Control of Winding Parameters |
S.T. Peters | Static Mechanical Tests For Filament Wound Composites |
Hugh Reynolds | Pressure Vessel Design and Manufacture |
James Leslie | Filament Winding Technology Learned |
Stan Peters gave a 30 minute presentation to the Northern California
SAMPE Chapter on April 29, 2011entitled "What the New Materials Engineer needs to know" The presentation was a revision of the paper "The Basics of Materials Engineering",
previously presented at the SAMPE Wichita, KS technical Conference,
10/29/09. The abstract is below and the full paper PDF can be
obtained here
The Basics of Materials Engineering
ABSTRACT
This paper
addresses the needs of new and mature materials engineers who do not belong to
a large group such one would find in many aerospace companies. Three of those needs are: What do we
do? What do we need to know? How do we get what we need?
The wide scope of materials engineering
is shown along with the somewhat limited scope of work for the current
materials engineers in the high tech industries of aerospace or electronics. Two of the key processes of interest
are highlighted. They are: selecting
and building the composite and adhesive bonding. The pitfalls for composite design and manufacture and the
options for surface preparation are greater at this time than at any time in
the past, and these options are presented along with material to aid
choice. One typical problem for
the lonely materials engineer in a small company is the predilection for other
engineers and management to accept a low value for average lap shear, provided
it allows a sufficient factor of safety. Examples of actual materials
engineering problems and their solutions are given along with approaches for
testing, composite fabrication, and adhesive bonding.
Below is a relevant table from that publication.
Surface Preparations for Bare Aluminum | Comments
|
No treatment, solvent wipe | Wildly variable due to the non-removal of the weak oxide layer |
Grit Blast (GB) plus Conversion Coating | Inconsistent, low values |
Grit blast plus solvent wipe | Good initial values, poor durability |
Grit Blast plus Mil P 23377 Primer | Low, inconsistent values |
GB plus Chem. Film, Mil-P-5541 Cl. 3 | Low Values. < 13780MPa (2000 psi) |
GB plus Br 127 primer (Note 1) | Good values, Better durability |
GB plus FPL Etch plus primer (Note 2) | Good values and durability |
GB plus P-2 Etch and primer (Note 3) | Good values and durability |
GB plus Silane, BR 127 (Note 4) | Excellent values and durability |
GB plus Sol-Gel plus Br127 primer Note 5 | Excellent values and durability |
GB plus PAA plus Br127 Primer | Excellent values and highest durability |
Notes
1.
Br 127 primer is product and TM of Cytec Industries (one should be
aware that there are strict limits on the applied primer thickness)
2. Forest Products Lab, Combination of Chromic and Sulfuric Acids. EPA Limited
3. P-2 etch and optimized P-2 use acids which are not EPA limited
4. Silane treatment used by RAAF, and WRALC (C-141)
5. Sol-Gel patented and developed by Boeing. Extensive testing by AFRL (9)
6
PAA equals Phosphoric Acid Anodize, which may not be available in all
venues. It has the highest most consistent values, and best proven
durability
Finally
there is will be an e-book version of
the book "Filament Winding, Composite Structure Fabrication" which as
mentioned before, was published in 1998 and is now out of print.
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