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phase 1 - Advanced
Composite Structures Fabrication
and Damage Repair |
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Class Dates |
| 16 February 2009 |
11 May 2009 |
13 July 2009 |
| 14 September 2009 |
2 November 2009 |
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This five-day course is our most popular. It is designed for composite parts fabricators who need to learn a great deal about the fundamentals of advanced composite materials, manufacturing and repair techniques.
This course assumes no prior experience with composites. It is an ideal starting point for those interested in developing their advanced composite expertise with a comprehensive fundamental overview.
Hands-on exercises are extensive, and students will work with fiberglass and Kevlar® Cloth,carbon fiber unidirectional tape, Nomex® honeycomb, and foam core materials. One of the finished parts will be deliberately damaged and repaired using basic repair techniques and “wet” lay-up repair materials and processes. The final repaired part will be cut in half for evaluation of the repair cross section.
For those who desire further training and more difficult repair scenarios, we recommend taking our Advanced Composite Structures: Fabrication and Damage Repair Phase 2 course directly after this course. |
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Key Lecture Elements
Current Status of Composite
Technology: history, recent
developments, and terminology
Characteristics of Advanced
Composite Materials
Material Forms: dry cloth and wet resin vs. prepregs, weave/styles
Fabrication Methods: wet lay-up,
prepreg lay-up, filament winding, RTM,
press molding, pultrusionResin/Matrix
Systems: thermosets vs. thermoplastics, temperature ranges, cold storage
requirements/shelf life limits, adhesives
Fundamentals of Fabrication: prepreg cloth handling
and ply orientation, lay-up procedures, vacuum bagging
Curing Methods: oven/autoclave/hot
bonder curesUse of Adhesives: co-curing vs. secondary bonding, surface preparation,
curing temperatures, cleanliness,
pressure, bond line quality
Inspection Criteria: non-destructive
inspection methods, defect detection,
galvanic corrosion, documentation,
acceptable vs. unacceptable defects,
defect prevention
Principles of Tooling: types of tools,
thermal characteristics
Repair Methods: permanent vs.
temporary repairs, scarf vs. stepped vs.
mechanical patch repair scenarios,
demo of “hot-bonder” field repair units
Fasteners: use of mechanical
fasteners, adhesively bonded fasteners
Health and Safety Issues: proper
handling, personal protection, allergic
reactions, waste disposal |
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course overviews
Advanced Composite repair - Phase 1
Read more…
advanced composite repair - Phase 2
Read more…
advanced composite repair - Phase 3
Read more…
Workshop Exercises
Component lay-up using fiberglass
dry cloth and liquid epoxy resin
materials, including: fiber
orientation, lay-up, resin mixing
procedures, health/safety concerns,
controlling fiber-resin ratios, vacuum bagging.
Component lay-up using prepreg
materials, including: sandwich
panels in carbon fiber unidirectional
tape, fiberglass and aramid fiber
cloth panels, ply orientation, warp
direction, stacking vs. nesting,
material cutting and handling,
honeycomb and foam core
installation.
Vacuum bagging: materials and
processes, bleeder/breather
schedules, bridging, debulking, leak
checking, potential problems, use of
caul plates, use of thermocouples,
use of an ultrasonic leak detector.
Curing processes: ramp rates,
vacuum schedule, oven cures, and
potential problems.
Repairs: damage removal, scarf
preparation, skin repair fabrication,
use of wet resins and cloth for
repairs, core plug repairs. |
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